Maksimović, A., Milović, L., Zečević, B., Aleksić, V.,& Bekrić, D.. (2024-06). Determination of the ductile-to-brittle transition temperature of NIOMOL 490 K steel welded joints. in Theoretical and Applied Fracture Mechanics
Elsevier B.V.., 131, 104404.
https://doi.org/10.1016/j.tafmec.2024.104404

Maksimović A, Milović L, Zečević B, Aleksić V, Bekrić D. Determination of the ductile-to-brittle transition temperature of NIOMOL 490 K steel welded joints. in Theoretical and Applied Fracture Mechanics. 2024;131:104404.
doi:10.1016/j.tafmec.2024.104404 .

Maksimović, Ana, Milović, Ljubica, Zečević, Bojana, Aleksić, Vujadin, Bekrić, Dragoljub, "Determination of the ductile-to-brittle transition temperature of NIOMOL 490 K steel welded joints" in Theoretical and Applied Fracture Mechanics, 131 (2024-06):104404,
https://doi.org/10.1016/j.tafmec.2024.104404 . .

TY  - CONF
AU  - Maksimović, Ana
AU  - Petrovski, Blagoj
AU  - Milović, Ljubica
AU  - Zečević, Bojana
AU  - Aleksić, Vujadin
AU  - Bulatović, Srđan
AU  - Bekrić, Dragoljub
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6625
AB  - Most serious weldment failures have catastrophic consequences in terms of damage to other equipment, loss of production, and risks to worker health and safety. For the above reasons, there is a tendency to find the line between safety and disaster, and this requires a guarantee of the integrity of the welded structure even if a crack is present. The structural and mechanical heterogeneity of a welded joint affects its resistance to cracking in both the elastic and plastic regions. Therefore, it is important to define the test method and the position of the fatigue crack. The behavior of an elasto-plastic material, during stable crack growth can be described by the J-Δa diagram. As the crack propagates, a point on the curve is defined, which represents the critical value of the J-integral. The aim of this experiment is to determine JIC value and the procedure is reflected in the determination of the R-curve, i.e., the J‒Δa curve, which consists of the value of the J-integral for uniform crack increments Δa. In this paper, precracked SEN(B) specimens with the fatigue crack positioned in the weld metal (WM) were tested according to standard ASTM E1820 at room temperature (RT), -20 0C and -30 0C.
PB  - Elsevier B.V.
C3  - Procedia Structural Integrity
T1  - Experimental Determination of JIc for a HSLA Steel Welded Joint
EP  - 194
SP  - 190
VL  - 48
DO  - 10.1016/j.prostr.2023.07.147
ER  - 

@conference{
author = "Maksimović, Ana and Petrovski, Blagoj and Milović, Ljubica and Zečević, Bojana and Aleksić, Vujadin and Bulatović, Srđan and Bekrić, Dragoljub",
year = "2023",
abstract = "Most serious weldment failures have catastrophic consequences in terms of damage to other equipment, loss of production, and risks to worker health and safety. For the above reasons, there is a tendency to find the line between safety and disaster, and this requires a guarantee of the integrity of the welded structure even if a crack is present. The structural and mechanical heterogeneity of a welded joint affects its resistance to cracking in both the elastic and plastic regions. Therefore, it is important to define the test method and the position of the fatigue crack. The behavior of an elasto-plastic material, during stable crack growth can be described by the J-Δa diagram. As the crack propagates, a point on the curve is defined, which represents the critical value of the J-integral. The aim of this experiment is to determine JIC value and the procedure is reflected in the determination of the R-curve, i.e., the J‒Δa curve, which consists of the value of the J-integral for uniform crack increments Δa. In this paper, precracked SEN(B) specimens with the fatigue crack positioned in the weld metal (WM) were tested according to standard ASTM E1820 at room temperature (RT), -20 0C and -30 0C.",
publisher = "Elsevier B.V.",
journal = "Procedia Structural Integrity",
title = "Experimental Determination of JIc for a HSLA Steel Welded Joint",
pages = "194-190",
volume = "48",
doi = "10.1016/j.prostr.2023.07.147"
}

Maksimović, A., Petrovski, B., Milović, L., Zečević, B., Aleksić, V., Bulatović, S.,& Bekrić, D.. (2023). Experimental Determination of JIc for a HSLA Steel Welded Joint. in Procedia Structural Integrity
Elsevier B.V.., 48, 190-194.
https://doi.org/10.1016/j.prostr.2023.07.147

Maksimović A, Petrovski B, Milović L, Zečević B, Aleksić V, Bulatović S, Bekrić D. Experimental Determination of JIc for a HSLA Steel Welded Joint. in Procedia Structural Integrity. 2023;48:190-194.
doi:10.1016/j.prostr.2023.07.147 .

Maksimović, Ana, Petrovski, Blagoj, Milović, Ljubica, Zečević, Bojana, Aleksić, Vujadin, Bulatović, Srđan, Bekrić, Dragoljub, "Experimental Determination of JIc for a HSLA Steel Welded Joint" in Procedia Structural Integrity, 48 (2023):190-194,
https://doi.org/10.1016/j.prostr.2023.07.147 . .

TY  - JOUR
AU  - Aleksić, Vujadin
AU  - Milović, Ljubica
AU  - Zečević, Bojana
AU  - Bulatović, Srđan
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5289
AB  - Fracture mechanics, as a scientific discipline dealing with the study of cracks in welded structures, has defined parameters and introduced new test methods in order to better determine the tendency to crack growth, critical conditions for rapid fracture development, material resistance to rapid crack propagation and better definition of other parameters for assessing the behaviour of the material and the safety of the structure in the presence of cracks. In this paper, the focus is on determination of the parameter of elastic-plastic mechanics of J-integral, more precisely, on examination of the critical value of J-integral (JIc) of the welded joint of HSLA steel. The position of the tip of the fatigue crack and the properties of the region where fracture propagation occurs are main indicators of influence of the heterogeneity of the NN-70 welded structure and mechanical properties. Resistance to cracking in the welded joint shows that the heterogeneity has a major impact on the resistance to crack initiation and propagation, in elastic as well as in the plastic region.
PB  - Strojarski Facultet
T2  - Tehnicki Vjesnik
T1  - Experimental Determination of the Critical Value of the J-Integral that Refers to the HSLA Steel Welded Joint
EP  - 152
IS  - 1
SP  - 148
VL  - 30
DO  - 10.17559/TV-20220419093052
ER  - 

@article{
author = "Aleksić, Vujadin and Milović, Ljubica and Zečević, Bojana and Bulatović, Srđan",
year = "2023",
abstract = "Fracture mechanics, as a scientific discipline dealing with the study of cracks in welded structures, has defined parameters and introduced new test methods in order to better determine the tendency to crack growth, critical conditions for rapid fracture development, material resistance to rapid crack propagation and better definition of other parameters for assessing the behaviour of the material and the safety of the structure in the presence of cracks. In this paper, the focus is on determination of the parameter of elastic-plastic mechanics of J-integral, more precisely, on examination of the critical value of J-integral (JIc) of the welded joint of HSLA steel. The position of the tip of the fatigue crack and the properties of the region where fracture propagation occurs are main indicators of influence of the heterogeneity of the NN-70 welded structure and mechanical properties. Resistance to cracking in the welded joint shows that the heterogeneity has a major impact on the resistance to crack initiation and propagation, in elastic as well as in the plastic region.",
publisher = "Strojarski Facultet",
journal = "Tehnicki Vjesnik",
title = "Experimental Determination of the Critical Value of the J-Integral that Refers to the HSLA Steel Welded Joint",
pages = "152-148",
number = "1",
volume = "30",
doi = "10.17559/TV-20220419093052"
}

Aleksić, V., Milović, L., Zečević, B.,& Bulatović, S.. (2023). Experimental Determination of the Critical Value of the J-Integral that Refers to the HSLA Steel Welded Joint. in Tehnicki Vjesnik
Strojarski Facultet., 30(1), 148-152.
https://doi.org/10.17559/TV-20220419093052

Aleksić V, Milović L, Zečević B, Bulatović S. Experimental Determination of the Critical Value of the J-Integral that Refers to the HSLA Steel Welded Joint. in Tehnicki Vjesnik. 2023;30(1):148-152.
doi:10.17559/TV-20220419093052 .

Aleksić, Vujadin, Milović, Ljubica, Zečević, Bojana, Bulatović, Srđan, "Experimental Determination of the Critical Value of the J-Integral that Refers to the HSLA Steel Welded Joint" in Tehnicki Vjesnik, 30, no. 1 (2023):148-152,
https://doi.org/10.17559/TV-20220419093052 . .

TY  - CONF
AU  - Aleksić, Vujadin
AU  - Milović, Ljubica
AU  - Bulatović, Srđan
AU  - Zečević, Bojana
AU  - Maksimović, Ana
PY  - 2022
UR  - http://rims.institutims.rs/handle/123456789/416
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5126
AB  - The behavior of steel in low-cycle fatigue (LCF) is tested experimentally, in accordance with ISO 12106:2017 (E) and/or ASTM E 606-04. For this purpose, smooth specimens which are exposed to low-cycle fatigue at several levels of regulated strains and/or loads at room, elevated or reduced temperatures are used. Stress–strain response at LCF has the shape of an ideal hysteresis loop. The strain range Δε corresponds to overall loop width, while the stress range Δσ corresponds to its overall height. The paper presents a method for determining the intersection of the idealized hysteresis loop and the positive part of the strain axis in order to determine the values of elastic, Δεe/2, and plastic, Δεp/2, components of the strain amplitude to characterize the behavior of steel under low cyclic fatigue. The values of elastic and plastic components of the strain amplitude are needed to determine the characteristic curves of low-cycle fatigue, which describe the behavior of steel under the loading of low-cycle fatigue.
PB  - Springer Science and Business Media B.V.
C3  - Mechanisms and Machine Science
T1  - Determination of LCF Plastic and Elastic Strain Components of Steel
EP  - 349
SP  - 341
VL  - 109
DO  - 10.1007/978-3-030-88465-9_32
ER  - 

@conference{
author = "Aleksić, Vujadin and Milović, Ljubica and Bulatović, Srđan and Zečević, Bojana and Maksimović, Ana",
year = "2022",
abstract = "The behavior of steel in low-cycle fatigue (LCF) is tested experimentally, in accordance with ISO 12106:2017 (E) and/or ASTM E 606-04. For this purpose, smooth specimens which are exposed to low-cycle fatigue at several levels of regulated strains and/or loads at room, elevated or reduced temperatures are used. Stress–strain response at LCF has the shape of an ideal hysteresis loop. The strain range Δε corresponds to overall loop width, while the stress range Δσ corresponds to its overall height. The paper presents a method for determining the intersection of the idealized hysteresis loop and the positive part of the strain axis in order to determine the values of elastic, Δεe/2, and plastic, Δεp/2, components of the strain amplitude to characterize the behavior of steel under low cyclic fatigue. The values of elastic and plastic components of the strain amplitude are needed to determine the characteristic curves of low-cycle fatigue, which describe the behavior of steel under the loading of low-cycle fatigue.",
publisher = "Springer Science and Business Media B.V.",
journal = "Mechanisms and Machine Science",
title = "Determination of LCF Plastic and Elastic Strain Components of Steel",
pages = "349-341",
volume = "109",
doi = "10.1007/978-3-030-88465-9_32"
}

Aleksić, V., Milović, L., Bulatović, S., Zečević, B.,& Maksimović, A.. (2022). Determination of LCF Plastic and Elastic Strain Components of Steel. in Mechanisms and Machine Science
Springer Science and Business Media B.V.., 109, 341-349.
https://doi.org/10.1007/978-3-030-88465-9_32

Aleksić V, Milović L, Bulatović S, Zečević B, Maksimović A. Determination of LCF Plastic and Elastic Strain Components of Steel. in Mechanisms and Machine Science. 2022;109:341-349.
doi:10.1007/978-3-030-88465-9_32 .

Aleksić, Vujadin, Milović, Ljubica, Bulatović, Srđan, Zečević, Bojana, Maksimović, Ana, "Determination of LCF Plastic and Elastic Strain Components of Steel" in Mechanisms and Machine Science, 109 (2022):341-349,
https://doi.org/10.1007/978-3-030-88465-9_32 . .

TY  - JOUR
AU  - Aleksić, Vujadin
AU  - Bulatović, Srđan
AU  - Zečević, Bojana
AU  - Maksimović, Ana
AU  - Milović, Ljubica
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5290
AB  - The design of mechanical components exposed to fatigue load, at a low number of cycles, requires knowledge of the behaviour of the material under the impact of variable load in conditions of controlled strain when cyclic plasticity is present. The aim of testing the quality of the material of the components exposed to low cycle fatigue (LCF) in many industries: Nuclear, aerospace, mechanical, civil engineering and shipbuilding. In order to ensure the reliability and consistency of the results from different laboratories, it is necessary to collect all test data using test and data processing methodologies that are in accordance with a number of key points of ISO 12106: 2017 and/or ASTM E 606-04 standards. This paper defines a new data processing methodology after the LCF testing of steel.
PB  - University of Zagreb Faculty of Mechanical Engineering and Naval Architecture
T2  - Transactions of Famena
T1  - Processing of Data Obtained by the Testing of Steel under Low Cyclic Fatigue (Part I)
EP  - 72
IS  - 4
SP  - 59
VL  - 46
DO  - 10.21278/TOF.464041622
ER  - 

@article{
author = "Aleksić, Vujadin and Bulatović, Srđan and Zečević, Bojana and Maksimović, Ana and Milović, Ljubica",
year = "2022",
abstract = "The design of mechanical components exposed to fatigue load, at a low number of cycles, requires knowledge of the behaviour of the material under the impact of variable load in conditions of controlled strain when cyclic plasticity is present. The aim of testing the quality of the material of the components exposed to low cycle fatigue (LCF) in many industries: Nuclear, aerospace, mechanical, civil engineering and shipbuilding. In order to ensure the reliability and consistency of the results from different laboratories, it is necessary to collect all test data using test and data processing methodologies that are in accordance with a number of key points of ISO 12106: 2017 and/or ASTM E 606-04 standards. This paper defines a new data processing methodology after the LCF testing of steel.",
publisher = "University of Zagreb Faculty of Mechanical Engineering and Naval Architecture",
journal = "Transactions of Famena",
title = "Processing of Data Obtained by the Testing of Steel under Low Cyclic Fatigue (Part I)",
pages = "72-59",
number = "4",
volume = "46",
doi = "10.21278/TOF.464041622"
}

Aleksić, V., Bulatović, S., Zečević, B., Maksimović, A.,& Milović, L.. (2022). Processing of Data Obtained by the Testing of Steel under Low Cyclic Fatigue (Part I). in Transactions of Famena
University of Zagreb Faculty of Mechanical Engineering and Naval Architecture., 46(4), 59-72.
https://doi.org/10.21278/TOF.464041622

Aleksić V, Bulatović S, Zečević B, Maksimović A, Milović L. Processing of Data Obtained by the Testing of Steel under Low Cyclic Fatigue (Part I). in Transactions of Famena. 2022;46(4):59-72.
doi:10.21278/TOF.464041622 .

Aleksić, Vujadin, Bulatović, Srđan, Zečević, Bojana, Maksimović, Ana, Milović, Ljubica, "Processing of Data Obtained by the Testing of Steel under Low Cyclic Fatigue (Part I)" in Transactions of Famena, 46, no. 4 (2022):59-72,
https://doi.org/10.21278/TOF.464041622 . .

TY  - CONF
AU  - Zečević, Bojana
AU  - Maksimović, Ana
AU  - Milović, Ljubica
AU  - Aleksić, Vujadin
AU  - Grbović, Aleksandar
AU  - Bulatović, Srđan
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6423
AB  - Steel grade 14MoV6 3 is used for manufacturing of boilers and steam pipelines designed for steam temperatures up to 560 °C. This paper presents the numerical simulation of a CT-specimen, using the finite element method. The analysis was performed using Ansys Workbench R21, and represents the initial stage of extensive research involving the behaviour of 14MoV6 3 steel. The goal was to simulate the real experimental conditions, including boundary conditions and loads, which were defined in accordance with relevant standards, and to obtain representative results. The temperature dependent mechanical properties needed for the simulation of plastic behaviour of such specimens under tensile loads were obtained from the experimental data and the literature.
PB  - Elsevier B.V.
C3  - 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity
T1  - Numerical simulation of 14Mov6-3 steel CT-specimen Fracture Behavior
EP  - 1496
SP  - 1483
VL  - 42
DO  - 10.1016/j.prostr.2022.12.189
ER  - 

@conference{
author = "Zečević, Bojana and Maksimović, Ana and Milović, Ljubica and Aleksić, Vujadin and Grbović, Aleksandar and Bulatović, Srđan",
year = "2022",
abstract = "Steel grade 14MoV6 3 is used for manufacturing of boilers and steam pipelines designed for steam temperatures up to 560 °C. This paper presents the numerical simulation of a CT-specimen, using the finite element method. The analysis was performed using Ansys Workbench R21, and represents the initial stage of extensive research involving the behaviour of 14MoV6 3 steel. The goal was to simulate the real experimental conditions, including boundary conditions and loads, which were defined in accordance with relevant standards, and to obtain representative results. The temperature dependent mechanical properties needed for the simulation of plastic behaviour of such specimens under tensile loads were obtained from the experimental data and the literature.",
publisher = "Elsevier B.V.",
journal = "23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity",
title = "Numerical simulation of 14Mov6-3 steel CT-specimen Fracture Behavior",
pages = "1496-1483",
volume = "42",
doi = "10.1016/j.prostr.2022.12.189"
}

Zečević, B., Maksimović, A., Milović, L., Aleksić, V., Grbović, A.,& Bulatović, S.. (2022). Numerical simulation of 14Mov6-3 steel CT-specimen Fracture Behavior. in 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity
Elsevier B.V.., 42, 1483-1496.
https://doi.org/10.1016/j.prostr.2022.12.189

Zečević B, Maksimović A, Milović L, Aleksić V, Grbović A, Bulatović S. Numerical simulation of 14Mov6-3 steel CT-specimen Fracture Behavior. in 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity. 2022;42:1483-1496.
doi:10.1016/j.prostr.2022.12.189 .

Zečević, Bojana, Maksimović, Ana, Milović, Ljubica, Aleksić, Vujadin, Grbović, Aleksandar, Bulatović, Srđan, "Numerical simulation of 14Mov6-3 steel CT-specimen Fracture Behavior" in 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity, 42 (2022):1483-1496,
https://doi.org/10.1016/j.prostr.2022.12.189 . .

TY  - CONF
AU  - Zečević, Bojana
AU  - Maksimović, Ana
AU  - Milović, Ljubica
AU  - Bulatović, Srđan
AU  - Aleksić, Vujadin
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6429
AB  - Steel grade 14MoV6 3 is used for manufacturing of boilers and steam pipelines designed for steam temperatures up to 560°C. This paper presents the experimental analysis which included impact toughness test. The analysis resulted in impact energy values, and their respective components, crack initiation and crack propagation energy, and represents the initial stage of extensive research involving the behavior of 14MoV6 3 steel. The aim was to determine the effects of temperature (room vs. operated), as well as the effects of specimen orientation with regards to the rolling direction, on the impact toughness and the relation between its components.
PB  - Elsevier B.V.
C3  - 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity
T1  - Effect of temperature and specimen orientation on Charpy impact toughness
EP  - 1482
SP  - 1475
VL  - 42
DO  - 10.1016/j.prostr.2022.12.188
ER  - 

@conference{
author = "Zečević, Bojana and Maksimović, Ana and Milović, Ljubica and Bulatović, Srđan and Aleksić, Vujadin",
year = "2022",
abstract = "Steel grade 14MoV6 3 is used for manufacturing of boilers and steam pipelines designed for steam temperatures up to 560°C. This paper presents the experimental analysis which included impact toughness test. The analysis resulted in impact energy values, and their respective components, crack initiation and crack propagation energy, and represents the initial stage of extensive research involving the behavior of 14MoV6 3 steel. The aim was to determine the effects of temperature (room vs. operated), as well as the effects of specimen orientation with regards to the rolling direction, on the impact toughness and the relation between its components.",
publisher = "Elsevier B.V.",
journal = "23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity",
title = "Effect of temperature and specimen orientation on Charpy impact toughness",
pages = "1482-1475",
volume = "42",
doi = "10.1016/j.prostr.2022.12.188"
}

Zečević, B., Maksimović, A., Milović, L., Bulatović, S.,& Aleksić, V.. (2022). Effect of temperature and specimen orientation on Charpy impact toughness. in 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity
Elsevier B.V.., 42, 1475-1482.
https://doi.org/10.1016/j.prostr.2022.12.188

Zečević B, Maksimović A, Milović L, Bulatović S, Aleksić V. Effect of temperature and specimen orientation on Charpy impact toughness. in 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity. 2022;42:1475-1482.
doi:10.1016/j.prostr.2022.12.188 .

Zečević, Bojana, Maksimović, Ana, Milović, Ljubica, Bulatović, Srđan, Aleksić, Vujadin, "Effect of temperature and specimen orientation on Charpy impact toughness" in 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity, 42 (2022):1475-1482,
https://doi.org/10.1016/j.prostr.2022.12.188 . .

TY  - JOUR
AU  - Aleksić, Vujadin
AU  - Dojčinović, Marina
AU  - Milović, Ljubica
AU  - Zečević, Bojana
AU  - Maksimović, Ana
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5623
AB  - Polomljene epruvete za ispitivanje niskocikličnim zamorom čelika Nionikral 70 (NN-70) osnovnog materijala (OM) i simulirane zone pod uticajem toplote (SZUT) poslužile su NAM za izradu uzoraka za ispitivanje otpornosti na kavitaciju. Za ispitivanje u laboratorijskim uslovima primenjena je ultrazvučna vibraciona metoda kavitacije (metoda stacionarnog uzorka). Uslovi i procedura ispitivanja, priprema uzoraka kao i interpretacija rezultata definisani su standardom ASTM G32. Površine uzoraka čelika NN-70 OM i SZUT bile su izložene dejstvu kavitacije i praćenju oštećenja kroz određeno vreme. Merenje gubitka mase uzoraka na analitičkoj vagi posle određenog vremena omogućilo NAM je određivanje kavitacione brzine kao mere procene otpornosti materijala na dejstvo kavitacije. Za praćenje varijacija u morfologiji površine s promenom vremena ispitivanja primenjena je skenirajuća elektronska mikroskopija (SEM). Na osnovu rezultata ispitivanja otpornosti na kavitaciju u radu su analizirane morfologije oštećenja površina za različita vremena izlaganja dejstvu kavitacije uzoraka OM i SZUT čelika NN-70 kao i mehanizmi koji su doveli do oštećenja površina uzoraka.
AB  - Broken test tubes for low-cycle fatigue testing of Nionicral 70 (NN-70) parent material (PM) steel and simulated heat-affected zones (SHAZ) were used to produce samples for cavitation resistance testing. Ultrasonic vibrational cavitation method (stationary sample method) was applied for testing in laboratory conditions. The test conditions and procedure, sample preparation and interpretation of results are defined by ASTM G32. The surfaces of the NN-70 PM and SHAZ steel samples were exposed to cavitation and damage monitoring over time. Measuring the weight loss of samples on the analytical balance after a certain time allowed us to determine the cavitation velocity as a measure of the material's resistance to the effect of cavitation. Scanning electron microscopy (SEM) was applied to monitor variations in surface morphology with changing test time. On the basis of the results of the cavitation resistance test, the morphologies of the surface damage for different exposure times of the cavitation of PM and SHAZ steel NN-70 samples were analyzed, as well as the mechanisms that led to the damage of the sample surfaces.
PB  - Inženjersko društvo za koroziju, Beograd
T2  - Zaštita materijala
T1  - Mehanizmi i morfologije kavitacionog oštećenja čelika Nionikral 70
T1  - Mechanisms and morphologies of cavitation damage of NN 70 steel
EP  - 105
IS  - 2
SP  - 95
VL  - 2021
DO  - 10.5937/zasmat2102095A
ER  - 

@article{
author = "Aleksić, Vujadin and Dojčinović, Marina and Milović, Ljubica and Zečević, Bojana and Maksimović, Ana",
year = "2021",
abstract = "Polomljene epruvete za ispitivanje niskocikličnim zamorom čelika Nionikral 70 (NN-70) osnovnog materijala (OM) i simulirane zone pod uticajem toplote (SZUT) poslužile su NAM za izradu uzoraka za ispitivanje otpornosti na kavitaciju. Za ispitivanje u laboratorijskim uslovima primenjena je ultrazvučna vibraciona metoda kavitacije (metoda stacionarnog uzorka). Uslovi i procedura ispitivanja, priprema uzoraka kao i interpretacija rezultata definisani su standardom ASTM G32. Površine uzoraka čelika NN-70 OM i SZUT bile su izložene dejstvu kavitacije i praćenju oštećenja kroz određeno vreme. Merenje gubitka mase uzoraka na analitičkoj vagi posle određenog vremena omogućilo NAM je određivanje kavitacione brzine kao mere procene otpornosti materijala na dejstvo kavitacije. Za praćenje varijacija u morfologiji površine s promenom vremena ispitivanja primenjena je skenirajuća elektronska mikroskopija (SEM). Na osnovu rezultata ispitivanja otpornosti na kavitaciju u radu su analizirane morfologije oštećenja površina za različita vremena izlaganja dejstvu kavitacije uzoraka OM i SZUT čelika NN-70 kao i mehanizmi koji su doveli do oštećenja površina uzoraka., Broken test tubes for low-cycle fatigue testing of Nionicral 70 (NN-70) parent material (PM) steel and simulated heat-affected zones (SHAZ) were used to produce samples for cavitation resistance testing. Ultrasonic vibrational cavitation method (stationary sample method) was applied for testing in laboratory conditions. The test conditions and procedure, sample preparation and interpretation of results are defined by ASTM G32. The surfaces of the NN-70 PM and SHAZ steel samples were exposed to cavitation and damage monitoring over time. Measuring the weight loss of samples on the analytical balance after a certain time allowed us to determine the cavitation velocity as a measure of the material's resistance to the effect of cavitation. Scanning electron microscopy (SEM) was applied to monitor variations in surface morphology with changing test time. On the basis of the results of the cavitation resistance test, the morphologies of the surface damage for different exposure times of the cavitation of PM and SHAZ steel NN-70 samples were analyzed, as well as the mechanisms that led to the damage of the sample surfaces.",
publisher = "Inženjersko društvo za koroziju, Beograd",
journal = "Zaštita materijala",
title = "Mehanizmi i morfologije kavitacionog oštećenja čelika Nionikral 70, Mechanisms and morphologies of cavitation damage of NN 70 steel",
pages = "105-95",
number = "2",
volume = "2021",
doi = "10.5937/zasmat2102095A"
}

Aleksić, V., Dojčinović, M., Milović, L., Zečević, B.,& Maksimović, A.. (2021). Mehanizmi i morfologije kavitacionog oštećenja čelika Nionikral 70. in Zaštita materijala
Inženjersko društvo za koroziju, Beograd., 2021(2), 95-105.
https://doi.org/10.5937/zasmat2102095A

Aleksić V, Dojčinović M, Milović L, Zečević B, Maksimović A. Mehanizmi i morfologije kavitacionog oštećenja čelika Nionikral 70. in Zaštita materijala. 2021;2021(2):95-105.
doi:10.5937/zasmat2102095A .

Aleksić, Vujadin, Dojčinović, Marina, Milović, Ljubica, Zečević, Bojana, Maksimović, Ana, "Mehanizmi i morfologije kavitacionog oštećenja čelika Nionikral 70" in Zaštita materijala, 2021, no. 2 (2021):95-105,
https://doi.org/10.5937/zasmat2102095A . .

TY  - JOUR
AU  - Hemer, Abubkr
AU  - Milović, Ljubica
AU  - Grbović, Aleksandar
AU  - Aleksić, Bojana
AU  - Aleksić, Vujadin
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4353
AB  - Most of the serious weldment failures lead to catastrophic consequences in terms of damage of other equipment, loss of production, and risks to workers' health and safety. Hence, there is motivation to find margin between safety and disaster. This necessitates guaranteeing the integrity of a welded structure even if a crack is present. Therefore, influence of the material inhomogeneity and residual stresses on deformation and fracture behavior needs to be described precisely. Fracture mechanics parameters J - integral and CTOD have attracted great interest in recent years. Two three point bending specimens of base metal (BM) and weld metal (WM) were tested according to standard BS EN ISO 15653. Than, a two dimensional finite element analysis was performed in Ansys Workbench software to calculate J-integral, and compare with experimental results. The aim of this work is to explore the possibility of using the test results in the reliable prediction of weldment fracture.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - Numerical determination and experimental validation of the fracture toughness of welded joints
VL  - 107
DO  - 10.1016/j.engfailanal.2019.104220
ER  - 

@article{
author = "Hemer, Abubkr and Milović, Ljubica and Grbović, Aleksandar and Aleksić, Bojana and Aleksić, Vujadin",
year = "2020",
abstract = "Most of the serious weldment failures lead to catastrophic consequences in terms of damage of other equipment, loss of production, and risks to workers' health and safety. Hence, there is motivation to find margin between safety and disaster. This necessitates guaranteeing the integrity of a welded structure even if a crack is present. Therefore, influence of the material inhomogeneity and residual stresses on deformation and fracture behavior needs to be described precisely. Fracture mechanics parameters J - integral and CTOD have attracted great interest in recent years. Two three point bending specimens of base metal (BM) and weld metal (WM) were tested according to standard BS EN ISO 15653. Than, a two dimensional finite element analysis was performed in Ansys Workbench software to calculate J-integral, and compare with experimental results. The aim of this work is to explore the possibility of using the test results in the reliable prediction of weldment fracture.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "Numerical determination and experimental validation of the fracture toughness of welded joints",
volume = "107",
doi = "10.1016/j.engfailanal.2019.104220"
}

Hemer, A., Milović, L., Grbović, A., Aleksić, B.,& Aleksić, V.. (2020). Numerical determination and experimental validation of the fracture toughness of welded joints. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 107.
https://doi.org/10.1016/j.engfailanal.2019.104220

Hemer A, Milović L, Grbović A, Aleksić B, Aleksić V. Numerical determination and experimental validation of the fracture toughness of welded joints. in Engineering Failure Analysis. 2020;107.
doi:10.1016/j.engfailanal.2019.104220 .

Hemer, Abubkr, Milović, Ljubica, Grbović, Aleksandar, Aleksić, Bojana, Aleksić, Vujadin, "Numerical determination and experimental validation of the fracture toughness of welded joints" in Engineering Failure Analysis, 107 (2020),
https://doi.org/10.1016/j.engfailanal.2019.104220 . .

TY  - JOUR
AU  - Aleksić, Vujadin
AU  - Aleksić, Bojana
AU  - Prodanović, Ana
AU  - Milović, Ljubica
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4572
AB  - In present paper, based on the results of the experimental study of the behaviour of the samples made of a HSLA steel, in the form of round smooth specimens (RSS) under LCF conditions (with controlled and completely reversible strain Δε/2 = const, Rε = εmin/εmax = −1, according to ISO 12106: 2003 (E)) and square specimens (SqS) under conditions of HCF conditions (with controlled one-way variable load on tension with σmin = const, according to ISO 12110-1:2013), a computational stress analysis was performed using the FE method and the behaviour of this steel in the fatigue behaviour simulation (LCF and HCF) in SolidWorks programme was shown. On the basis of the performed analysis of the results of the stress-strain state and the determination of the life using the life isolines for a particular load cycle involving the entire RSS ligament, i.e. SqS for a particular load in a wide range of LCF and HCF loads and comparison with the results of experimental tests, a figure i.e. graphical presentation was given and conclusions were drawn that justify the efforts for numerical assessment of the life cycle of the loaded machine parts.
PB  - International Conference on New Technologies, Development and Application, NT 2020
T2  - Lecture Notes in Networks and Systems
T1  - HSLA Steel - Simulation of Fatigue
EP  - 321
SP  - 314
VL  - 128 LNNS
DO  - 10.1007/978-3-030-46817-0_36
ER  - 

@article{
author = "Aleksić, Vujadin and Aleksić, Bojana and Prodanović, Ana and Milović, Ljubica",
year = "2020",
abstract = "In present paper, based on the results of the experimental study of the behaviour of the samples made of a HSLA steel, in the form of round smooth specimens (RSS) under LCF conditions (with controlled and completely reversible strain Δε/2 = const, Rε = εmin/εmax = −1, according to ISO 12106: 2003 (E)) and square specimens (SqS) under conditions of HCF conditions (with controlled one-way variable load on tension with σmin = const, according to ISO 12110-1:2013), a computational stress analysis was performed using the FE method and the behaviour of this steel in the fatigue behaviour simulation (LCF and HCF) in SolidWorks programme was shown. On the basis of the performed analysis of the results of the stress-strain state and the determination of the life using the life isolines for a particular load cycle involving the entire RSS ligament, i.e. SqS for a particular load in a wide range of LCF and HCF loads and comparison with the results of experimental tests, a figure i.e. graphical presentation was given and conclusions were drawn that justify the efforts for numerical assessment of the life cycle of the loaded machine parts.",
publisher = "International Conference on New Technologies, Development and Application, NT 2020",
journal = "Lecture Notes in Networks and Systems",
title = "HSLA Steel - Simulation of Fatigue",
pages = "321-314",
volume = "128 LNNS",
doi = "10.1007/978-3-030-46817-0_36"
}

Aleksić, V., Aleksić, B., Prodanović, A.,& Milović, L.. (2020). HSLA Steel - Simulation of Fatigue. in Lecture Notes in Networks and Systems
International Conference on New Technologies, Development and Application, NT 2020., 128 LNNS, 314-321.
https://doi.org/10.1007/978-3-030-46817-0_36

Aleksić V, Aleksić B, Prodanović A, Milović L. HSLA Steel - Simulation of Fatigue. in Lecture Notes in Networks and Systems. 2020;128 LNNS:314-321.
doi:10.1007/978-3-030-46817-0_36 .

Aleksić, Vujadin, Aleksić, Bojana, Prodanović, Ana, Milović, Ljubica, "HSLA Steel - Simulation of Fatigue" in Lecture Notes in Networks and Systems, 128 LNNS (2020):314-321,
https://doi.org/10.1007/978-3-030-46817-0_36 . .

TY  - JOUR
AU  - Aleksić, Bojana
AU  - Grbović, Aleksandar
AU  - Milović, Ljubica
AU  - Hemer, Abubkr
AU  - Aleksić, Vujadin
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4141
AB  - In order to prevent the premature failure of steam pipeline produced of molybdenum-vanadium steel, the experimental tests were performed to measure fracture toughness and to determine the mechanical behaviour of cracked pipes. A finite element method was used to calculate the fracture behaviour of the pressurized pipeline made of 14MoV6-3 steel based on the J-integral computation. The J-R curves were experimentally obtained by the elastic unloading compliance method for the single edge notched bend specimens and compared with those obtained using finite element method. A two dimensional finite element analysis was performed in Ansys Workbench software to determine the stress distribution and calculate J-integral values for the selected specimen geometry. Special attention was paid to the influence of applied boundary conditions on the accuracy of J-integral values, as well as to the influence of mesh density. It is shown that numerically obtained J-values significantly depend on the number of nodes used to apply displacements. However, if recommendations proposed in this paper are implemented, the accuracy of calculated values is satisfactory and successful failure analysis can be carried out. This approach can be useful in engineering applications where time saving and costs reducing are required.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - Numerical simulation of fatigue crack propagation: A case study of defected steam pipeline
SP  - 104165
VL  - 106
DO  - 10.1016/j.engfailanal.2019.104165
ER  - 

@article{
author = "Aleksić, Bojana and Grbović, Aleksandar and Milović, Ljubica and Hemer, Abubkr and Aleksić, Vujadin",
year = "2019",
abstract = "In order to prevent the premature failure of steam pipeline produced of molybdenum-vanadium steel, the experimental tests were performed to measure fracture toughness and to determine the mechanical behaviour of cracked pipes. A finite element method was used to calculate the fracture behaviour of the pressurized pipeline made of 14MoV6-3 steel based on the J-integral computation. The J-R curves were experimentally obtained by the elastic unloading compliance method for the single edge notched bend specimens and compared with those obtained using finite element method. A two dimensional finite element analysis was performed in Ansys Workbench software to determine the stress distribution and calculate J-integral values for the selected specimen geometry. Special attention was paid to the influence of applied boundary conditions on the accuracy of J-integral values, as well as to the influence of mesh density. It is shown that numerically obtained J-values significantly depend on the number of nodes used to apply displacements. However, if recommendations proposed in this paper are implemented, the accuracy of calculated values is satisfactory and successful failure analysis can be carried out. This approach can be useful in engineering applications where time saving and costs reducing are required.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "Numerical simulation of fatigue crack propagation: A case study of defected steam pipeline",
pages = "104165",
volume = "106",
doi = "10.1016/j.engfailanal.2019.104165"
}

Aleksić, B., Grbović, A., Milović, L., Hemer, A.,& Aleksić, V.. (2019). Numerical simulation of fatigue crack propagation: A case study of defected steam pipeline. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 106, 104165.
https://doi.org/10.1016/j.engfailanal.2019.104165

Aleksić B, Grbović A, Milović L, Hemer A, Aleksić V. Numerical simulation of fatigue crack propagation: A case study of defected steam pipeline. in Engineering Failure Analysis. 2019;106:104165.
doi:10.1016/j.engfailanal.2019.104165 .

Aleksić, Bojana, Grbović, Aleksandar, Milović, Ljubica, Hemer, Abubkr, Aleksić, Vujadin, "Numerical simulation of fatigue crack propagation: A case study of defected steam pipeline" in Engineering Failure Analysis, 106 (2019):104165,
https://doi.org/10.1016/j.engfailanal.2019.104165 . .

TY  - JOUR
AU  - Aleksić, Bojana
AU  - Grbović, Aleksandar
AU  - Milović, Ljubica
AU  - Hemer, Abubkr
AU  - Aleksić, Vujadin
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5034
AB  - In order to prevent the premature failure of steam pipeline produced of molybdenum-vanadium steel, the experimental tests were performed to measure fracture toughness and to determine the mechanical behaviour of cracked pipes. A finite element method was used to calculate the fracture behaviour of the pressurized pipeline made of 14MoV6-3 steel based on the J-integral computation. The J-R curves were experimentally obtained by the elastic unloading compliance method for the single edge notched bend specimens and compared with those obtained using finite element method. A two dimensional finite element analysis was performed in Ansys Workbench software to determine the stress distribution and calculate J-integral values for the selected specimen geometry. Special attention was paid to the influence of applied boundary conditions on the accuracy of J-integral values, as well as to the influence of mesh density. It is shown that numerically obtained J-values significantly depend on the number of nodes used to apply displacements. However, if recommendations proposed in this paper are implemented, the accuracy of calculated values is satisfactory and successful failure analysis can be carried out. This approach can be useful in engineering applications where time saving and costs reducing are required.
PB  - Elsevier Ltd
T2  - Engineering Failure Analysis
T1  - Numerical simulation of fatigue crack propagation: A case study of defected steam pipeline
SP  - 104165
VL  - 106
DO  - 10.1016/j.engfailanal.2019.104165
ER  - 

@article{
author = "Aleksić, Bojana and Grbović, Aleksandar and Milović, Ljubica and Hemer, Abubkr and Aleksić, Vujadin",
year = "2019",
abstract = "In order to prevent the premature failure of steam pipeline produced of molybdenum-vanadium steel, the experimental tests were performed to measure fracture toughness and to determine the mechanical behaviour of cracked pipes. A finite element method was used to calculate the fracture behaviour of the pressurized pipeline made of 14MoV6-3 steel based on the J-integral computation. The J-R curves were experimentally obtained by the elastic unloading compliance method for the single edge notched bend specimens and compared with those obtained using finite element method. A two dimensional finite element analysis was performed in Ansys Workbench software to determine the stress distribution and calculate J-integral values for the selected specimen geometry. Special attention was paid to the influence of applied boundary conditions on the accuracy of J-integral values, as well as to the influence of mesh density. It is shown that numerically obtained J-values significantly depend on the number of nodes used to apply displacements. However, if recommendations proposed in this paper are implemented, the accuracy of calculated values is satisfactory and successful failure analysis can be carried out. This approach can be useful in engineering applications where time saving and costs reducing are required.",
publisher = "Elsevier Ltd",
journal = "Engineering Failure Analysis",
title = "Numerical simulation of fatigue crack propagation: A case study of defected steam pipeline",
pages = "104165",
volume = "106",
doi = "10.1016/j.engfailanal.2019.104165"
}

Aleksić, B., Grbović, A., Milović, L., Hemer, A.,& Aleksić, V.. (2019). Numerical simulation of fatigue crack propagation: A case study of defected steam pipeline. in Engineering Failure Analysis
Elsevier Ltd., 106, 104165.
https://doi.org/10.1016/j.engfailanal.2019.104165

Aleksić B, Grbović A, Milović L, Hemer A, Aleksić V. Numerical simulation of fatigue crack propagation: A case study of defected steam pipeline. in Engineering Failure Analysis. 2019;106:104165.
doi:10.1016/j.engfailanal.2019.104165 .

Aleksić, Bojana, Grbović, Aleksandar, Milović, Ljubica, Hemer, Abubkr, Aleksić, Vujadin, "Numerical simulation of fatigue crack propagation: A case study of defected steam pipeline" in Engineering Failure Analysis, 106 (2019):104165,
https://doi.org/10.1016/j.engfailanal.2019.104165 . .

TY  - JOUR
AU  - Aleksić, Vujadin
AU  - Milović, Ljubica
AU  - Blačić, Ivo
AU  - Vuherer, Tomaz
AU  - Bulatović, Srđan
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4086
AB  - Numerous structural components made of high strength low-alloyed steels are often exposed to low-cycle fatigue loading during their exploitation life. In order to study the fatigue behavior of one grade of structural steels produced in Yugoslavia during the eighties of the last century, a push-pull constant amplitude strain-controlled fatigue tests were conducted at room temperatures. This paper analyses behavior of two different materials, parent steel (PM) and its coarse-grained (CG) simulated heat-affected zone (SHAZ) exposed to the action of low-cycle fatigue (LCF) loading performed in the range from 1 to 10(4) cycles. LCF tests were conducted at strain ratio R = -1 at strain amplitude range from 0.3% to 0.8%. The materials' Coffin-Manson parameters appearing in the strain-life and cyclic stress-strain curves were calculated. Fracture surface analysis of both materials was done. The results showed that plasticity under dynamic load conditions is satisfactory for both materials which give them good resistance to crack initiation and propagation.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - Effect of LCF on behavior and microstructure of microalloyed HSLA steel and its simulated CGHAZ
EP  - 1106
SP  - 1094
VL  - 104
DO  - 10.1016/j.engfailanal.2019.06.017
ER  - 

@article{
author = "Aleksić, Vujadin and Milović, Ljubica and Blačić, Ivo and Vuherer, Tomaz and Bulatović, Srđan",
year = "2019",
abstract = "Numerous structural components made of high strength low-alloyed steels are often exposed to low-cycle fatigue loading during their exploitation life. In order to study the fatigue behavior of one grade of structural steels produced in Yugoslavia during the eighties of the last century, a push-pull constant amplitude strain-controlled fatigue tests were conducted at room temperatures. This paper analyses behavior of two different materials, parent steel (PM) and its coarse-grained (CG) simulated heat-affected zone (SHAZ) exposed to the action of low-cycle fatigue (LCF) loading performed in the range from 1 to 10(4) cycles. LCF tests were conducted at strain ratio R = -1 at strain amplitude range from 0.3% to 0.8%. The materials' Coffin-Manson parameters appearing in the strain-life and cyclic stress-strain curves were calculated. Fracture surface analysis of both materials was done. The results showed that plasticity under dynamic load conditions is satisfactory for both materials which give them good resistance to crack initiation and propagation.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "Effect of LCF on behavior and microstructure of microalloyed HSLA steel and its simulated CGHAZ",
pages = "1106-1094",
volume = "104",
doi = "10.1016/j.engfailanal.2019.06.017"
}

Aleksić, V., Milović, L., Blačić, I., Vuherer, T.,& Bulatović, S.. (2019). Effect of LCF on behavior and microstructure of microalloyed HSLA steel and its simulated CGHAZ. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 104, 1094-1106.
https://doi.org/10.1016/j.engfailanal.2019.06.017

Aleksić V, Milović L, Blačić I, Vuherer T, Bulatović S. Effect of LCF on behavior and microstructure of microalloyed HSLA steel and its simulated CGHAZ. in Engineering Failure Analysis. 2019;104:1094-1106.
doi:10.1016/j.engfailanal.2019.06.017 .

Aleksić, Vujadin, Milović, Ljubica, Blačić, Ivo, Vuherer, Tomaz, Bulatović, Srđan, "Effect of LCF on behavior and microstructure of microalloyed HSLA steel and its simulated CGHAZ" in Engineering Failure Analysis, 104 (2019):1094-1106,
https://doi.org/10.1016/j.engfailanal.2019.06.017 . .

TY  - JOUR
AU  - Aleksić, Bojana
AU  - Milović, Ljubica
AU  - Grbović, Aleksandar
AU  - Hemer, Abubkr
AU  - Aleksić, Vujadin
AU  - Zrilić, Milorad
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3783
AB  - Steel grade 14MoV6-3 is a low-carbon microalloyed steel with addition of chromium and molybdenum. This grade is designed mainly for power industry applications, withstanding operating at elevated temperatures.In this paper, mechanical properties of steel grade 14MoV6-3 and methodology of calculation of critical values of the J-integral are presented. The level of damage is determined by analyzing the virgin material of the same grade. The focus of presented investigation is on the experimental J integral determination, where critical values of the J-integral (J(IC)) are compared with the values obtained by using the finite element methods (FEM). FEM model was defined on the basis of experimental conditions and obtained numerical values should confirm our experimental results.
PB  - Elsevier Science Bv, Amsterdam
T2  - ECF22 - Loading and Environmental Effects on Structural Integrity
T1  - Experimental and numerical investigations of the critical values of J-integral for the steel of steam pipelines
EP  - 1594
SP  - 1589
VL  - 13
DO  - 10.1016/j.prostr.2018.12.335
ER  - 

@article{
author = "Aleksić, Bojana and Milović, Ljubica and Grbović, Aleksandar and Hemer, Abubkr and Aleksić, Vujadin and Zrilić, Milorad",
year = "2018",
abstract = "Steel grade 14MoV6-3 is a low-carbon microalloyed steel with addition of chromium and molybdenum. This grade is designed mainly for power industry applications, withstanding operating at elevated temperatures.In this paper, mechanical properties of steel grade 14MoV6-3 and methodology of calculation of critical values of the J-integral are presented. The level of damage is determined by analyzing the virgin material of the same grade. The focus of presented investigation is on the experimental J integral determination, where critical values of the J-integral (J(IC)) are compared with the values obtained by using the finite element methods (FEM). FEM model was defined on the basis of experimental conditions and obtained numerical values should confirm our experimental results.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "ECF22 - Loading and Environmental Effects on Structural Integrity",
title = "Experimental and numerical investigations of the critical values of J-integral for the steel of steam pipelines",
pages = "1594-1589",
volume = "13",
doi = "10.1016/j.prostr.2018.12.335"
}

Aleksić, B., Milović, L., Grbović, A., Hemer, A., Aleksić, V.,& Zrilić, M.. (2018). Experimental and numerical investigations of the critical values of J-integral for the steel of steam pipelines. in ECF22 - Loading and Environmental Effects on Structural Integrity
Elsevier Science Bv, Amsterdam., 13, 1589-1594.
https://doi.org/10.1016/j.prostr.2018.12.335

Aleksić B, Milović L, Grbović A, Hemer A, Aleksić V, Zrilić M. Experimental and numerical investigations of the critical values of J-integral for the steel of steam pipelines. in ECF22 - Loading and Environmental Effects on Structural Integrity. 2018;13:1589-1594.
doi:10.1016/j.prostr.2018.12.335 .

Aleksić, Bojana, Milović, Ljubica, Grbović, Aleksandar, Hemer, Abubkr, Aleksić, Vujadin, Zrilić, Milorad, "Experimental and numerical investigations of the critical values of J-integral for the steel of steam pipelines" in ECF22 - Loading and Environmental Effects on Structural Integrity, 13 (2018):1589-1594,
https://doi.org/10.1016/j.prostr.2018.12.335 . .

TY  - JOUR
AU  - Aleksić, Vujadin
AU  - Milović, Ljubica
AU  - Aleksić, Bojana
AU  - Bulatović, Srđan
AU  - Burzić, Zijah
AU  - Hemer, Abubkr
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3495
AB  - Experimental research on the behaviour of high-strength low-alloy steel ( HSLA)exposed to low-cycle fatigue (LCF) with controlled and fully reversible strain (Delta epsilon/2 = const, R epsilon =epsilon(min)/epsilon(max) = -1) has been analysed. LCF tests are performed on a series of smooth bar shaped specimens, 11 x 11 x 95 mm, parent metal (PM), welded joint (WJ) and simulated heat affected zone (SHAZ) of steel Nionikral 70 (NN-70) with semi-amplitude of controlled strain, Delta epsilon/2 = 0.40- 0.80. The results of the experimental investigation have given us important information on the understanding of fatigue behaviour of steel NN-70 and its welded joints. In this work the results of static and dynamic-, that is monotonous and fatigue behaviour of the material, are compared, which is a practical contribution to the assessment of the behaviour of PM and WJ of steel NN-70 exposed to effects of low cycle fatigue, i.e. monotonous and fatigue behaviour of the material.
PB  - Society for Structural Integrity and Life, Institute for Material Testing
T2  - Structural Integrity and Life
T1  - Behaviour of nionikral-70 in low-cycle fatigue
EP  - 73
IS  - 1
SP  - 61
VL  - 17
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3495
ER  - 

@article{
author = "Aleksić, Vujadin and Milović, Ljubica and Aleksić, Bojana and Bulatović, Srđan and Burzić, Zijah and Hemer, Abubkr",
year = "2017",
abstract = "Experimental research on the behaviour of high-strength low-alloy steel ( HSLA)exposed to low-cycle fatigue (LCF) with controlled and fully reversible strain (Delta epsilon/2 = const, R epsilon =epsilon(min)/epsilon(max) = -1) has been analysed. LCF tests are performed on a series of smooth bar shaped specimens, 11 x 11 x 95 mm, parent metal (PM), welded joint (WJ) and simulated heat affected zone (SHAZ) of steel Nionikral 70 (NN-70) with semi-amplitude of controlled strain, Delta epsilon/2 = 0.40- 0.80. The results of the experimental investigation have given us important information on the understanding of fatigue behaviour of steel NN-70 and its welded joints. In this work the results of static and dynamic-, that is monotonous and fatigue behaviour of the material, are compared, which is a practical contribution to the assessment of the behaviour of PM and WJ of steel NN-70 exposed to effects of low cycle fatigue, i.e. monotonous and fatigue behaviour of the material.",
publisher = "Society for Structural Integrity and Life, Institute for Material Testing",
journal = "Structural Integrity and Life",
title = "Behaviour of nionikral-70 in low-cycle fatigue",
pages = "73-61",
number = "1",
volume = "17",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3495"
}

Aleksić, V., Milović, L., Aleksić, B., Bulatović, S., Burzić, Z.,& Hemer, A.. (2017). Behaviour of nionikral-70 in low-cycle fatigue. in Structural Integrity and Life
Society for Structural Integrity and Life, Institute for Material Testing., 17(1), 61-73.
https://hdl.handle.net/21.15107/rcub_technorep_3495

Aleksić V, Milović L, Aleksić B, Bulatović S, Burzić Z, Hemer A. Behaviour of nionikral-70 in low-cycle fatigue. in Structural Integrity and Life. 2017;17(1):61-73.
https://hdl.handle.net/21.15107/rcub_technorep_3495 .

Aleksić, Vujadin, Milović, Ljubica, Aleksić, Bojana, Bulatović, Srđan, Burzić, Zijah, Hemer, Abubkr, "Behaviour of nionikral-70 in low-cycle fatigue" in Structural Integrity and Life, 17, no. 1 (2017):61-73,
https://hdl.handle.net/21.15107/rcub_technorep_3495 .

TY  - JOUR
AU  - Aleksić, Bojana
AU  - Aleksić, Vujadin
AU  - Milović, Ljubica
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3524
AB  - In the present paper, after calculation using the Finite Element Method (FEM), stress distribution on the model of a part of the pressure-tank mantle without welded joints (WJ), with transversal WJ, longitudinal WJ and cross point location of WJ is analyzed. Also, FEM calculation and comparative analysis of the effects of WJ on the stress distribution have been conducted using the tank for liquid carbon dioxide as an example, on which, in addition to the mantle sheet-metal and bottom with necessary openings and elements such as saddles with supports and hangers, transversal and longitudinal butt WJ, have been modelled.
AB  - U radu je posle proračuna metodom konačnih elemenata (MKE) analizirana raspodela napona na modelu dela oplate rezervoara pod pritiskom bez zavarenih spojeva (ZS), sa obimnim ZS, podužnim ZS i ukrsnim mestom ZS. Takođe, u radu je na primeru rezervoara za tečni ugljendioksid, na kome su pored limova oplate i danaca sa potrebnim otvorima i elementima kao što su sedla sa osloncima i uške modelirani obimni i podužni sučeoni ZS, urađen proračun MKE i uporedna analiza uticaja ZS na raspodelu napona.
PB  - Engineering Society for Corrosion, Belgrade, Serbia
T2  - Zaštita materijala
T1  - Analysis of the effects of butt welded joints on a carrying capacity of a structure tank
T1  - Analiza uticaja sučeono zavarenih spojeva na nosivost konstrukcije rezervoara
EP  - 468
IS  - 4
SP  - 462
VL  - 58
DO  - 10.5937/ZasMat1704462A
ER  - 

@article{
author = "Aleksić, Bojana and Aleksić, Vujadin and Milović, Ljubica",
year = "2017",
abstract = "In the present paper, after calculation using the Finite Element Method (FEM), stress distribution on the model of a part of the pressure-tank mantle without welded joints (WJ), with transversal WJ, longitudinal WJ and cross point location of WJ is analyzed. Also, FEM calculation and comparative analysis of the effects of WJ on the stress distribution have been conducted using the tank for liquid carbon dioxide as an example, on which, in addition to the mantle sheet-metal and bottom with necessary openings and elements such as saddles with supports and hangers, transversal and longitudinal butt WJ, have been modelled., U radu je posle proračuna metodom konačnih elemenata (MKE) analizirana raspodela napona na modelu dela oplate rezervoara pod pritiskom bez zavarenih spojeva (ZS), sa obimnim ZS, podužnim ZS i ukrsnim mestom ZS. Takođe, u radu je na primeru rezervoara za tečni ugljendioksid, na kome su pored limova oplate i danaca sa potrebnim otvorima i elementima kao što su sedla sa osloncima i uške modelirani obimni i podužni sučeoni ZS, urađen proračun MKE i uporedna analiza uticaja ZS na raspodelu napona.",
publisher = "Engineering Society for Corrosion, Belgrade, Serbia",
journal = "Zaštita materijala",
title = "Analysis of the effects of butt welded joints on a carrying capacity of a structure tank, Analiza uticaja sučeono zavarenih spojeva na nosivost konstrukcije rezervoara",
pages = "468-462",
number = "4",
volume = "58",
doi = "10.5937/ZasMat1704462A"
}

Aleksić, B., Aleksić, V.,& Milović, L.. (2017). Analysis of the effects of butt welded joints on a carrying capacity of a structure tank. in Zaštita materijala
Engineering Society for Corrosion, Belgrade, Serbia., 58(4), 462-468.
https://doi.org/10.5937/ZasMat1704462A

Aleksić B, Aleksić V, Milović L. Analysis of the effects of butt welded joints on a carrying capacity of a structure tank. in Zaštita materijala. 2017;58(4):462-468.
doi:10.5937/ZasMat1704462A .

Aleksić, Bojana, Aleksić, Vujadin, Milović, Ljubica, "Analysis of the effects of butt welded joints on a carrying capacity of a structure tank" in Zaštita materijala, 58, no. 4 (2017):462-468,
https://doi.org/10.5937/ZasMat1704462A . .

TY  - JOUR
AU  - Aleksić, Vujadin
AU  - Dojčinović, Marina
AU  - Milović, Ljubica
AU  - Samardžić, Ivan
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3475
AB  - This paper presents the research into behaviour of HSLA steel affected by cavitation. The parent material (PM) and simulated heat-affected zone (SHAZ) were studied. Ultrasonic vibratory cavitation test was performed in laboratory conditions (by stationary specimen method). Scanning electron microscopy (SEM) was used to observe the variations in the surface morphology that occurred within different time intervals.
PB  - Croatian Metallurgical Soc, Zagreb
T2  - Metalurgija
T1  - Cavitation damages morphology of high-strength low-alloy steel
EP  - 425
IS  - 3
SP  - 423
VL  - 55
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3475
ER  - 

@article{
author = "Aleksić, Vujadin and Dojčinović, Marina and Milović, Ljubica and Samardžić, Ivan",
year = "2016",
abstract = "This paper presents the research into behaviour of HSLA steel affected by cavitation. The parent material (PM) and simulated heat-affected zone (SHAZ) were studied. Ultrasonic vibratory cavitation test was performed in laboratory conditions (by stationary specimen method). Scanning electron microscopy (SEM) was used to observe the variations in the surface morphology that occurred within different time intervals.",
publisher = "Croatian Metallurgical Soc, Zagreb",
journal = "Metalurgija",
title = "Cavitation damages morphology of high-strength low-alloy steel",
pages = "425-423",
number = "3",
volume = "55",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3475"
}

Aleksić, V., Dojčinović, M., Milović, L.,& Samardžić, I.. (2016). Cavitation damages morphology of high-strength low-alloy steel. in Metalurgija
Croatian Metallurgical Soc, Zagreb., 55(3), 423-425.
https://hdl.handle.net/21.15107/rcub_technorep_3475

Aleksić V, Dojčinović M, Milović L, Samardžić I. Cavitation damages morphology of high-strength low-alloy steel. in Metalurgija. 2016;55(3):423-425.
https://hdl.handle.net/21.15107/rcub_technorep_3475 .

Aleksić, Vujadin, Dojčinović, Marina, Milović, Ljubica, Samardžić, Ivan, "Cavitation damages morphology of high-strength low-alloy steel" in Metalurgija, 55, no. 3 (2016):423-425,
https://hdl.handle.net/21.15107/rcub_technorep_3475 .

TY  - JOUR
AU  - Aleksić, Vujadin
AU  - Milović, Ljubica
AU  - Aleksić, Bojana
AU  - Hemer, Abubkr
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3294
AB  - In present paper, the experimental research of the behaviour of high-strength low-alloy steel (HSLA) exposed to low-cycle fatigue (LCF) with controlled and fully reversible strain (Delta epsilon/2 = const, R epsilon = epsilon(min)/epsilon(max) = -1) has been analysed. Low-cycle fatigue tests were performed on a series of smooth specimens made of steel Nionikral 70 (NN-70), with semi-amplitude of controlled strain, Delta epsilon/2=0.35, 0.45, 0.50, 0.60, 0.70 and 0.80. Characterization and description of the low-cycle elastoplastic behaviour of the material by construction of characteristic curves of low-cycle fatigue are made using the characteristic hysteresis, load-strain force for each level of controlled strain, selected from the areas of stabilization. For the selection of stabilized hysteresis and processing of the results of low-cycle fatigue tests the recommendations of the ISO 12106:2003 (E) and ASTM E 606-04 standards were used, which in this work means to compare the two results. For each strain level characteristic stabilized hysteresis were selected, determined in accordance with recommendations of the ISO 12106:2003 (E) and ASTM E 606-04 standards, from which the data necessary for further processing of the results and finally for the construction of characteristic curves of low cycle fatigue were read. Constructed curves are compared, and the effect of selection of the recommendations from the standards on characterization of the behaviour of steel NN-70 estimated. The results of experimental investigation have given us important information on the understanding of fatigue behaviour of steel NN-70. In this work the results of static and dynamic, that is monotonous and fatigue behaviour of the material, were compared, which is a practical contribution to the assessment of the behaviour of steel NN-70 exposed to the effects of low-cycle fatigue, i.e. monotonous and fatigue behaviour of the material.
PB  - Elsevier Science Bv, Amsterdam
T2  - 21st European Conference on Fracture, (ECF21)
T1  - Indicators of HSLA steel behavior under low cycle fatigue loading
EP  - 3321
SP  - 3313
VL  - 2
DO  - 10.1016/j.prostr.2016.06.413
ER  - 

@article{
author = "Aleksić, Vujadin and Milović, Ljubica and Aleksić, Bojana and Hemer, Abubkr",
year = "2016",
abstract = "In present paper, the experimental research of the behaviour of high-strength low-alloy steel (HSLA) exposed to low-cycle fatigue (LCF) with controlled and fully reversible strain (Delta epsilon/2 = const, R epsilon = epsilon(min)/epsilon(max) = -1) has been analysed. Low-cycle fatigue tests were performed on a series of smooth specimens made of steel Nionikral 70 (NN-70), with semi-amplitude of controlled strain, Delta epsilon/2=0.35, 0.45, 0.50, 0.60, 0.70 and 0.80. Characterization and description of the low-cycle elastoplastic behaviour of the material by construction of characteristic curves of low-cycle fatigue are made using the characteristic hysteresis, load-strain force for each level of controlled strain, selected from the areas of stabilization. For the selection of stabilized hysteresis and processing of the results of low-cycle fatigue tests the recommendations of the ISO 12106:2003 (E) and ASTM E 606-04 standards were used, which in this work means to compare the two results. For each strain level characteristic stabilized hysteresis were selected, determined in accordance with recommendations of the ISO 12106:2003 (E) and ASTM E 606-04 standards, from which the data necessary for further processing of the results and finally for the construction of characteristic curves of low cycle fatigue were read. Constructed curves are compared, and the effect of selection of the recommendations from the standards on characterization of the behaviour of steel NN-70 estimated. The results of experimental investigation have given us important information on the understanding of fatigue behaviour of steel NN-70. In this work the results of static and dynamic, that is monotonous and fatigue behaviour of the material, were compared, which is a practical contribution to the assessment of the behaviour of steel NN-70 exposed to the effects of low-cycle fatigue, i.e. monotonous and fatigue behaviour of the material.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "21st European Conference on Fracture, (ECF21)",
title = "Indicators of HSLA steel behavior under low cycle fatigue loading",
pages = "3321-3313",
volume = "2",
doi = "10.1016/j.prostr.2016.06.413"
}

Aleksić, V., Milović, L., Aleksić, B.,& Hemer, A.. (2016). Indicators of HSLA steel behavior under low cycle fatigue loading. in 21st European Conference on Fracture, (ECF21)
Elsevier Science Bv, Amsterdam., 2, 3313-3321.
https://doi.org/10.1016/j.prostr.2016.06.413

Aleksić V, Milović L, Aleksić B, Hemer A. Indicators of HSLA steel behavior under low cycle fatigue loading. in 21st European Conference on Fracture, (ECF21). 2016;2:3313-3321.
doi:10.1016/j.prostr.2016.06.413 .

Aleksić, Vujadin, Milović, Ljubica, Aleksić, Bojana, Hemer, Abubkr, "Indicators of HSLA steel behavior under low cycle fatigue loading" in 21st European Conference on Fracture, (ECF21), 2 (2016):3313-3321,
https://doi.org/10.1016/j.prostr.2016.06.413 . .

TY  - JOUR
AU  - Milović, Ljubica
AU  - Bulatović, Srđan
AU  - Aleksić, Vujadin
AU  - Burzić, Zijah
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2709
AB  - A quenched and tempered high strength low alloy steel NIONIKRAL 70 for producing welded pressure vessels, where high resistance to fatigue crack propagation and high tolerance of damage are of high importance, has been investigated. Low cycle fatigue tests were conducting on several series of uniaxial cylindrical smooth specimens under strain control. The cycle behavior of the material is characterized using Coffin-Manson relation.
PB  - Elsevier Science Bv, Amsterdam
T2  - 20th European Conference on Fracture
T1  - Low cycle fatigue of weldments produced of a high strength low alloyed steel
EP  - 1434
SP  - 1429
VL  - 3
DO  - 10.1016/j.mspro.2014.06.231
ER  - 

@article{
author = "Milović, Ljubica and Bulatović, Srđan and Aleksić, Vujadin and Burzić, Zijah",
year = "2014",
abstract = "A quenched and tempered high strength low alloy steel NIONIKRAL 70 for producing welded pressure vessels, where high resistance to fatigue crack propagation and high tolerance of damage are of high importance, has been investigated. Low cycle fatigue tests were conducting on several series of uniaxial cylindrical smooth specimens under strain control. The cycle behavior of the material is characterized using Coffin-Manson relation.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "20th European Conference on Fracture",
title = "Low cycle fatigue of weldments produced of a high strength low alloyed steel",
pages = "1434-1429",
volume = "3",
doi = "10.1016/j.mspro.2014.06.231"
}

Milović, L., Bulatović, S., Aleksić, V.,& Burzić, Z.. (2014). Low cycle fatigue of weldments produced of a high strength low alloyed steel. in 20th European Conference on Fracture
Elsevier Science Bv, Amsterdam., 3, 1429-1434.
https://doi.org/10.1016/j.mspro.2014.06.231

Milović L, Bulatović S, Aleksić V, Burzić Z. Low cycle fatigue of weldments produced of a high strength low alloyed steel. in 20th European Conference on Fracture. 2014;3:1429-1434.
doi:10.1016/j.mspro.2014.06.231 .

Milović, Ljubica, Bulatović, Srđan, Aleksić, Vujadin, Burzić, Zijah, "Low cycle fatigue of weldments produced of a high strength low alloyed steel" in 20th European Conference on Fracture, 3 (2014):1429-1434,
https://doi.org/10.1016/j.mspro.2014.06.231 . .

TY  - JOUR
AU  - Bulatović, Srđan
AU  - Burzić, Zijah
AU  - Aleksić, Vujadin
AU  - Sedmak, Aleksandar
AU  - Milović, Ljubica
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2811
AB  - High strength low-alloy steel under low cycle fatigue at a certain level of strain controlled achieve stabilized condition. During the fatigue loading stabilized hysteresis loop is determined, which typical cycle of stabilization is calculated as half number of cycles to failure. Stabilized hysteresis loop is a representative of all hysteresis and it's used to determine all of the parameters for the assessment of low cycle fatigue. This paper Shows comparison of complete strain-life curves of low cycle fatigue for two chosen stabilized hysteresis loop cycles of base metal HSLA steel marked as Nionikral 70.
PB  - Croatian Metallurgical Soc, Zagreb
T2  - Metalurgija
T1  - Impact of choice of stabilized hysteresis loop on the end result of investigation of high-strength low-alloy (hsla) steel on low cycle fatigue
EP  - 480
IS  - 4
SP  - 477
VL  - 53
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2811
ER  - 

@article{
author = "Bulatović, Srđan and Burzić, Zijah and Aleksić, Vujadin and Sedmak, Aleksandar and Milović, Ljubica",
year = "2014",
abstract = "High strength low-alloy steel under low cycle fatigue at a certain level of strain controlled achieve stabilized condition. During the fatigue loading stabilized hysteresis loop is determined, which typical cycle of stabilization is calculated as half number of cycles to failure. Stabilized hysteresis loop is a representative of all hysteresis and it's used to determine all of the parameters for the assessment of low cycle fatigue. This paper Shows comparison of complete strain-life curves of low cycle fatigue for two chosen stabilized hysteresis loop cycles of base metal HSLA steel marked as Nionikral 70.",
publisher = "Croatian Metallurgical Soc, Zagreb",
journal = "Metalurgija",
title = "Impact of choice of stabilized hysteresis loop on the end result of investigation of high-strength low-alloy (hsla) steel on low cycle fatigue",
pages = "480-477",
number = "4",
volume = "53",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2811"
}

Bulatović, S., Burzić, Z., Aleksić, V., Sedmak, A.,& Milović, L.. (2014). Impact of choice of stabilized hysteresis loop on the end result of investigation of high-strength low-alloy (hsla) steel on low cycle fatigue. in Metalurgija
Croatian Metallurgical Soc, Zagreb., 53(4), 477-480.
https://hdl.handle.net/21.15107/rcub_technorep_2811

Bulatović S, Burzić Z, Aleksić V, Sedmak A, Milović L. Impact of choice of stabilized hysteresis loop on the end result of investigation of high-strength low-alloy (hsla) steel on low cycle fatigue. in Metalurgija. 2014;53(4):477-480.
https://hdl.handle.net/21.15107/rcub_technorep_2811 .

Bulatović, Srđan, Burzić, Zijah, Aleksić, Vujadin, Sedmak, Aleksandar, Milović, Ljubica, "Impact of choice of stabilized hysteresis loop on the end result of investigation of high-strength low-alloy (hsla) steel on low cycle fatigue" in Metalurgija, 53, no. 4 (2014):477-480,
https://hdl.handle.net/21.15107/rcub_technorep_2811 .

TY  - JOUR
AU  - Marković, Svetislav
AU  - Milović, Ljubica
AU  - Vrhovac, Miran
AU  - Lazović, Tatjana
AU  - Marinković, Aleksandar
AU  - Aleksić, Vujadin
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2272
AB  - This paper contains the results of experimental analysis of fatigue endurance of used steel teeth regenerated by hard facing. The cylindrical spur gears were tested and compared with the newly made ones, oiler being regenerated by hard facing with subsequent cementation and quenching. The fatigue testing wider variable amplitude loading was used to determine the duration of operational life through measurement of wear. The obtained results demonstrated the impact of hard facing methods on gear endurance in operation. In the test on regenerated gears it was discovered that initial pits appeared almost simultaneously for different facing materials and a bit earlier than in tests on newly made ones, despite their considerably higher pitting rate. Apart from that, the tested operational lives of regenerated and newly-made gears were approximately equal and much longer than predicted.
PB  - Editura Stiintifica Fmr, Bucharest
T2  - Metalurgia International
T1  - Life extension of gears flank surfaces regenerated by hard facing
EP  - 85
IS  - 2
SP  - 81
VL  - 18
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2272
ER  - 

@article{
author = "Marković, Svetislav and Milović, Ljubica and Vrhovac, Miran and Lazović, Tatjana and Marinković, Aleksandar and Aleksić, Vujadin",
year = "2013",
abstract = "This paper contains the results of experimental analysis of fatigue endurance of used steel teeth regenerated by hard facing. The cylindrical spur gears were tested and compared with the newly made ones, oiler being regenerated by hard facing with subsequent cementation and quenching. The fatigue testing wider variable amplitude loading was used to determine the duration of operational life through measurement of wear. The obtained results demonstrated the impact of hard facing methods on gear endurance in operation. In the test on regenerated gears it was discovered that initial pits appeared almost simultaneously for different facing materials and a bit earlier than in tests on newly made ones, despite their considerably higher pitting rate. Apart from that, the tested operational lives of regenerated and newly-made gears were approximately equal and much longer than predicted.",
publisher = "Editura Stiintifica Fmr, Bucharest",
journal = "Metalurgia International",
title = "Life extension of gears flank surfaces regenerated by hard facing",
pages = "85-81",
number = "2",
volume = "18",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2272"
}

Marković, S., Milović, L., Vrhovac, M., Lazović, T., Marinković, A.,& Aleksić, V.. (2013). Life extension of gears flank surfaces regenerated by hard facing. in Metalurgia International
Editura Stiintifica Fmr, Bucharest., 18(2), 81-85.
https://hdl.handle.net/21.15107/rcub_technorep_2272

Marković S, Milović L, Vrhovac M, Lazović T, Marinković A, Aleksić V. Life extension of gears flank surfaces regenerated by hard facing. in Metalurgia International. 2013;18(2):81-85.
https://hdl.handle.net/21.15107/rcub_technorep_2272 .

Marković, Svetislav, Milović, Ljubica, Vrhovac, Miran, Lazović, Tatjana, Marinković, Aleksandar, Aleksić, Vujadin, "Life extension of gears flank surfaces regenerated by hard facing" in Metalurgia International, 18, no. 2 (2013):81-85,
https://hdl.handle.net/21.15107/rcub_technorep_2272 .

TY  - JOUR
AU  - Milović, Ljubica
AU  - Bulatović, Srđan
AU  - Aleksić, Vujadin
AU  - Radaković, Zoran
AU  - Marković, Svetislav
AU  - Sedmak, Stojan
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2050
AB  - From a fracture mechanics point of view on welded joints, it is assumed that the welded joint is pre-cracked such as that the fatigue life of the pre-cracked structure is then determined by the period of crack growth under variable load. Experimental data obtained by testing provide a substantial basis for a better understanding and an explanation of the phenomenon of material fatigue. Low cycle fatigue (LCF) occurs during the process of charging and discharging of reactors, pressure vessels and pipelines; the fatigue can be accelerated by an additional negative effect of temperature variation and the aggressive effect of the media contained inside the vessel, and during the exploitation of the equipment in the processing industry. In the present paper the results are presented of J-integral measurements at LCF of a low-alloyed high strength steel (HSLA) weld metal used in the submerged arc welding process in the manufacture of pressure vessels.
AB  - U zavarenim spojevima, sa gledišta mehanike loma, se pretpostavlja prisustvo prslina, gde se onda vek s obzirom na zamor takvih konstrukcija sa prslinama procenjuje vremenom rasta prsline pod promenljivim opterećenjem. Eksperimentalni podaci dobijeni ispitivanjem pružaju značajnu osnovu za bolje razumevanje i objašnjenje fenomena zamora materijala. Niskociklični zamor (LCF) se javlja u procesu punjenja i pražnjenja reaktora, posuda pod pritiskom i cevovoda; proces zamora može ubrzati dodatni negativan efekat promene temperature i efekat agresivne sredine sadržane u posudi, kao i tokom perioda eksploatacije opreme u procesnoj industriji. U ovom radu prikazani su rezultati merenja J integrala pri niskocikličnom zamoru (LCF) metala šava niskolegiranog čelika povišene čvrstoće (HSLA), koji se koristi u proizvodnji posuda pod pritiskom postupkom zavarivanja pod praškom.
PB  - Society for Structural Integrity and Life, Institute for Material Testing
T2  - Integritet i vek konstrukcija
T1  - Assessment of the behaviour of fatigue loaded HSLA steel welded joint by applying fracture mechanics parameters
T1  - Procena ponašanja zavarenog spoja HSLA čelika opterećenog na zamor primenom parametara mehanike loma
EP  - 179
IS  - 3
SP  - 175
VL  - 12
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2050
ER  - 

@article{
author = "Milović, Ljubica and Bulatović, Srđan and Aleksić, Vujadin and Radaković, Zoran and Marković, Svetislav and Sedmak, Stojan",
year = "2012",
abstract = "From a fracture mechanics point of view on welded joints, it is assumed that the welded joint is pre-cracked such as that the fatigue life of the pre-cracked structure is then determined by the period of crack growth under variable load. Experimental data obtained by testing provide a substantial basis for a better understanding and an explanation of the phenomenon of material fatigue. Low cycle fatigue (LCF) occurs during the process of charging and discharging of reactors, pressure vessels and pipelines; the fatigue can be accelerated by an additional negative effect of temperature variation and the aggressive effect of the media contained inside the vessel, and during the exploitation of the equipment in the processing industry. In the present paper the results are presented of J-integral measurements at LCF of a low-alloyed high strength steel (HSLA) weld metal used in the submerged arc welding process in the manufacture of pressure vessels., U zavarenim spojevima, sa gledišta mehanike loma, se pretpostavlja prisustvo prslina, gde se onda vek s obzirom na zamor takvih konstrukcija sa prslinama procenjuje vremenom rasta prsline pod promenljivim opterećenjem. Eksperimentalni podaci dobijeni ispitivanjem pružaju značajnu osnovu za bolje razumevanje i objašnjenje fenomena zamora materijala. Niskociklični zamor (LCF) se javlja u procesu punjenja i pražnjenja reaktora, posuda pod pritiskom i cevovoda; proces zamora može ubrzati dodatni negativan efekat promene temperature i efekat agresivne sredine sadržane u posudi, kao i tokom perioda eksploatacije opreme u procesnoj industriji. U ovom radu prikazani su rezultati merenja J integrala pri niskocikličnom zamoru (LCF) metala šava niskolegiranog čelika povišene čvrstoće (HSLA), koji se koristi u proizvodnji posuda pod pritiskom postupkom zavarivanja pod praškom.",
publisher = "Society for Structural Integrity and Life, Institute for Material Testing",
journal = "Integritet i vek konstrukcija",
title = "Assessment of the behaviour of fatigue loaded HSLA steel welded joint by applying fracture mechanics parameters, Procena ponašanja zavarenog spoja HSLA čelika opterećenog na zamor primenom parametara mehanike loma",
pages = "179-175",
number = "3",
volume = "12",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2050"
}

Milović, L., Bulatović, S., Aleksić, V., Radaković, Z., Marković, S.,& Sedmak, S.. (2012). Assessment of the behaviour of fatigue loaded HSLA steel welded joint by applying fracture mechanics parameters. in Integritet i vek konstrukcija
Society for Structural Integrity and Life, Institute for Material Testing., 12(3), 175-179.
https://hdl.handle.net/21.15107/rcub_technorep_2050

Milović L, Bulatović S, Aleksić V, Radaković Z, Marković S, Sedmak S. Assessment of the behaviour of fatigue loaded HSLA steel welded joint by applying fracture mechanics parameters. in Integritet i vek konstrukcija. 2012;12(3):175-179.
https://hdl.handle.net/21.15107/rcub_technorep_2050 .

Milović, Ljubica, Bulatović, Srđan, Aleksić, Vujadin, Radaković, Zoran, Marković, Svetislav, Sedmak, Stojan, "Assessment of the behaviour of fatigue loaded HSLA steel welded joint by applying fracture mechanics parameters" in Integritet i vek konstrukcija, 12, no. 3 (2012):175-179,
https://hdl.handle.net/21.15107/rcub_technorep_2050 .

TY  - CONF
AU  - Aleksić, Vujadin
AU  - Milović, Ljubica
AU  - Kovacević, Zorica
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2161
AB  - In present paper, methodological approach to the analysis of the failures and recovery of the damages has been presented on an example of fracture and damage of a structure of the reloading bridge. The approach presented can be applied to various types of similar structures, and its application in preventive maintenance would contribute to extension of exploitation life of the reloading bridges.
PB  - University of Novi Sad, Fac Tech Sci, Adeko, Novi Sad
C3  - Machine and Industrial Design in Mechanical Engineering, Seventh International Symposium, Kod 2012
T1  - The failures of a supporting structure of a coal-reloading bridge and methodological approach to recovery of the damages
EP  - 108
SP  - 105
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2161
ER  - 

@conference{
author = "Aleksić, Vujadin and Milović, Ljubica and Kovacević, Zorica",
year = "2012",
abstract = "In present paper, methodological approach to the analysis of the failures and recovery of the damages has been presented on an example of fracture and damage of a structure of the reloading bridge. The approach presented can be applied to various types of similar structures, and its application in preventive maintenance would contribute to extension of exploitation life of the reloading bridges.",
publisher = "University of Novi Sad, Fac Tech Sci, Adeko, Novi Sad",
journal = "Machine and Industrial Design in Mechanical Engineering, Seventh International Symposium, Kod 2012",
title = "The failures of a supporting structure of a coal-reloading bridge and methodological approach to recovery of the damages",
pages = "108-105",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2161"
}

Aleksić, V., Milović, L.,& Kovacević, Z.. (2012). The failures of a supporting structure of a coal-reloading bridge and methodological approach to recovery of the damages. in Machine and Industrial Design in Mechanical Engineering, Seventh International Symposium, Kod 2012
University of Novi Sad, Fac Tech Sci, Adeko, Novi Sad., 105-108.
https://hdl.handle.net/21.15107/rcub_technorep_2161

Aleksić V, Milović L, Kovacević Z. The failures of a supporting structure of a coal-reloading bridge and methodological approach to recovery of the damages. in Machine and Industrial Design in Mechanical Engineering, Seventh International Symposium, Kod 2012. 2012;:105-108.
https://hdl.handle.net/21.15107/rcub_technorep_2161 .

Aleksić, Vujadin, Milović, Ljubica, Kovacević, Zorica, "The failures of a supporting structure of a coal-reloading bridge and methodological approach to recovery of the damages" in Machine and Industrial Design in Mechanical Engineering, Seventh International Symposium, Kod 2012 (2012):105-108,
https://hdl.handle.net/21.15107/rcub_technorep_2161 .

TY  - JOUR
AU  - Aleksić, Vujadin
AU  - Milović, Ljubica
AU  - Kovačević, Zorica
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2065
AB  - In present paper, the methodological approach to the analysis of the causes of failures and to recovery of the damages has been presented using, as an example, the fracture and damage of a welded steel structure of a reloading bridge. The approach presented can be applied to various types of similar structures, and its application in preventive maintenance would contribute to extension of exploitation life of the reloading bridges.
PB  - Univerzitet u Novom Sadu - Fakultet tehničkih nauka, Novi Sad
T2  - Machine Design
T1  - Recovery of the damages of a welded steel structure of a coal-reloading bridge: Methodological approach
EP  - 242
IS  - 4
SP  - 237
VL  - 4
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2065
ER  - 

@article{
author = "Aleksić, Vujadin and Milović, Ljubica and Kovačević, Zorica",
year = "2012",
abstract = "In present paper, the methodological approach to the analysis of the causes of failures and to recovery of the damages has been presented using, as an example, the fracture and damage of a welded steel structure of a reloading bridge. The approach presented can be applied to various types of similar structures, and its application in preventive maintenance would contribute to extension of exploitation life of the reloading bridges.",
publisher = "Univerzitet u Novom Sadu - Fakultet tehničkih nauka, Novi Sad",
journal = "Machine Design",
title = "Recovery of the damages of a welded steel structure of a coal-reloading bridge: Methodological approach",
pages = "242-237",
number = "4",
volume = "4",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2065"
}

Aleksić, V., Milović, L.,& Kovačević, Z.. (2012). Recovery of the damages of a welded steel structure of a coal-reloading bridge: Methodological approach. in Machine Design
Univerzitet u Novom Sadu - Fakultet tehničkih nauka, Novi Sad., 4(4), 237-242.
https://hdl.handle.net/21.15107/rcub_technorep_2065

Aleksić V, Milović L, Kovačević Z. Recovery of the damages of a welded steel structure of a coal-reloading bridge: Methodological approach. in Machine Design. 2012;4(4):237-242.
https://hdl.handle.net/21.15107/rcub_technorep_2065 .

Aleksić, Vujadin, Milović, Ljubica, Kovačević, Zorica, "Recovery of the damages of a welded steel structure of a coal-reloading bridge: Methodological approach" in Machine Design, 4, no. 4 (2012):237-242,
https://hdl.handle.net/21.15107/rcub_technorep_2065 .