TY  - JOUR
AU  - Dimitrijević, Marija
AU  - Jančić-Heinemann, Radmila
AU  - Mitraković, Dragan
AU  - Gajić-Kvaščev, Maja
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2998
AB  - The surface defects on alumina-based refractory arising from thermal shock were studied using image analysis and statistical tools. Alumina-based refractory specimens were prepared by adding a different amount of fibers into their original composition and compacted on different pressures. Obtained specimens were subjected to thermal shock, and induced surface defects were characterized by their morphological parameters determined using the image analysis procedure. The influence of preparation conditions on the surface defects morphology was studied using principle component analysis. It was shown that morphological parameters of defects vary corresponding to the composition and preparation conditions of ceramic material.
PB  - Wiley-Blackwell, Hoboken
T2  - International Journal of Applied Ceramic Technology
T1  - Influence of Preparation Conditions of Alumina-Based Refractory on the Morphological Parameters of Surface Defects
EP  - 607
IS  - 3
SP  - 598
VL  - 12
DO  - 10.1111/ijac.12209
ER  - 

@article{
author = "Dimitrijević, Marija and Jančić-Heinemann, Radmila and Mitraković, Dragan and Gajić-Kvaščev, Maja",
year = "2015",
abstract = "The surface defects on alumina-based refractory arising from thermal shock were studied using image analysis and statistical tools. Alumina-based refractory specimens were prepared by adding a different amount of fibers into their original composition and compacted on different pressures. Obtained specimens were subjected to thermal shock, and induced surface defects were characterized by their morphological parameters determined using the image analysis procedure. The influence of preparation conditions on the surface defects morphology was studied using principle component analysis. It was shown that morphological parameters of defects vary corresponding to the composition and preparation conditions of ceramic material.",
publisher = "Wiley-Blackwell, Hoboken",
journal = "International Journal of Applied Ceramic Technology",
title = "Influence of Preparation Conditions of Alumina-Based Refractory on the Morphological Parameters of Surface Defects",
pages = "607-598",
number = "3",
volume = "12",
doi = "10.1111/ijac.12209"
}

Dimitrijević, M., Jančić-Heinemann, R., Mitraković, D.,& Gajić-Kvaščev, M.. (2015). Influence of Preparation Conditions of Alumina-Based Refractory on the Morphological Parameters of Surface Defects. in International Journal of Applied Ceramic Technology
Wiley-Blackwell, Hoboken., 12(3), 598-607.
https://doi.org/10.1111/ijac.12209

Dimitrijević M, Jančić-Heinemann R, Mitraković D, Gajić-Kvaščev M. Influence of Preparation Conditions of Alumina-Based Refractory on the Morphological Parameters of Surface Defects. in International Journal of Applied Ceramic Technology. 2015;12(3):598-607.
doi:10.1111/ijac.12209 .

Dimitrijević, Marija, Jančić-Heinemann, Radmila, Mitraković, Dragan, Gajić-Kvaščev, Maja, "Influence of Preparation Conditions of Alumina-Based Refractory on the Morphological Parameters of Surface Defects" in International Journal of Applied Ceramic Technology, 12, no. 3 (2015):598-607,
https://doi.org/10.1111/ijac.12209 . .

TY  - JOUR
AU  - Petrović, Miloš
AU  - Mitraković, Dragan
AU  - Bugarski, Branko
AU  - Vonwil, Daniel
AU  - Martin, Ivan
AU  - Obradović, Bojana
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1453
AB  - The provision of mechanical stimulation is believed to be necessary for the functional assembly of skeletal tissues, which are normally exposed to a variety of biomechanical signals in vivo. In this paper, we present a development and validation of a novel bioreactor aimed for skeletal tissue engineering that provides dynamic compression and perfusion of cultivated tissues. Dynamic compression can be applied at frequencies up to 67.5 Hz and displacements down to 5 µm thus suitable for the simulation of physiological conditions in a native cartilage tissue (0.1-1 Hz, 5-10 % strain). The bioreactor also includes a load sensor that was calibrated so to measure average loads imposed on tissue samples. Regimes of the mechanical stimulation and acquisition of load sensor outputs are directed by an automatic control system using applications developed within the LabView platform. In addition, perfusion of tissue samples at physiological velocities (10-100 µm/s) provides efficient mass transfer, as well as the possibilities to expose the cells to hydrodynamic shear and simulate the conditions in a native bone tissue. Thus, the novel bioreactor is suited for studies of the effects of different biomechanical signals on in vitro regeneration of skeletal tissues, as well as for the studies of newly formulated biomaterials and cell biomaterial interactions under in vivo-like settings.
PB  - Association of the Chemical Engineers of Serbia
T2  - Chemical Industry & Chemical Engineering Quarterly
T1  - A novel bioreactor with mechanical stimulation for skeletal tissue engineering
EP  - 44
IS  - 1
SP  - 41
VL  - 15
DO  - 10.2298/CICEQ0901041P
ER  - 

@article{
author = "Petrović, Miloš and Mitraković, Dragan and Bugarski, Branko and Vonwil, Daniel and Martin, Ivan and Obradović, Bojana",
year = "2009",
abstract = "The provision of mechanical stimulation is believed to be necessary for the functional assembly of skeletal tissues, which are normally exposed to a variety of biomechanical signals in vivo. In this paper, we present a development and validation of a novel bioreactor aimed for skeletal tissue engineering that provides dynamic compression and perfusion of cultivated tissues. Dynamic compression can be applied at frequencies up to 67.5 Hz and displacements down to 5 µm thus suitable for the simulation of physiological conditions in a native cartilage tissue (0.1-1 Hz, 5-10 % strain). The bioreactor also includes a load sensor that was calibrated so to measure average loads imposed on tissue samples. Regimes of the mechanical stimulation and acquisition of load sensor outputs are directed by an automatic control system using applications developed within the LabView platform. In addition, perfusion of tissue samples at physiological velocities (10-100 µm/s) provides efficient mass transfer, as well as the possibilities to expose the cells to hydrodynamic shear and simulate the conditions in a native bone tissue. Thus, the novel bioreactor is suited for studies of the effects of different biomechanical signals on in vitro regeneration of skeletal tissues, as well as for the studies of newly formulated biomaterials and cell biomaterial interactions under in vivo-like settings.",
publisher = "Association of the Chemical Engineers of Serbia",
journal = "Chemical Industry & Chemical Engineering Quarterly",
title = "A novel bioreactor with mechanical stimulation for skeletal tissue engineering",
pages = "44-41",
number = "1",
volume = "15",
doi = "10.2298/CICEQ0901041P"
}

Petrović, M., Mitraković, D., Bugarski, B., Vonwil, D., Martin, I.,& Obradović, B.. (2009). A novel bioreactor with mechanical stimulation for skeletal tissue engineering. in Chemical Industry & Chemical Engineering Quarterly
Association of the Chemical Engineers of Serbia., 15(1), 41-44.
https://doi.org/10.2298/CICEQ0901041P

Petrović M, Mitraković D, Bugarski B, Vonwil D, Martin I, Obradović B. A novel bioreactor with mechanical stimulation for skeletal tissue engineering. in Chemical Industry & Chemical Engineering Quarterly. 2009;15(1):41-44.
doi:10.2298/CICEQ0901041P .

Petrović, Miloš, Mitraković, Dragan, Bugarski, Branko, Vonwil, Daniel, Martin, Ivan, Obradović, Bojana, "A novel bioreactor with mechanical stimulation for skeletal tissue engineering" in Chemical Industry & Chemical Engineering Quarterly, 15, no. 1 (2009):41-44,
https://doi.org/10.2298/CICEQ0901041P . .

TY  - JOUR
AU  - Volkov-Husović, Tatjana
AU  - Jančić-Heinemann, Radmila
AU  - Mitraković, Dragan
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1216
AB  - The thermal shock behavior of large grain size, alumina-based refractories was investigated experimentally using a standard water quench test. A mathematical model was employed to simulate the thermal stability behavior. Behavior of the samples under repeated thermal shock was monitored using ultrasonic measurements of dynamic Young's modulus. Image analysis was used to observe the extent of surface degradation. Analysis of the obtained results for the behavior of large grain size samples under conditions of rapid temperature changes is given.
PB  - 9th International Conference on Multiscale and Functionally Graded Materials, FGM IX
T2  - AIP Conference Proceedings
T1  - A fracture mechanics approach to thermal shock investigation in alumina-based refractory
EP  - 448
SP  - 443
VL  - 973
DO  - 10.1063/1.2896819
ER  - 

@article{
author = "Volkov-Husović, Tatjana and Jančić-Heinemann, Radmila and Mitraković, Dragan",
year = "2008",
abstract = "The thermal shock behavior of large grain size, alumina-based refractories was investigated experimentally using a standard water quench test. A mathematical model was employed to simulate the thermal stability behavior. Behavior of the samples under repeated thermal shock was monitored using ultrasonic measurements of dynamic Young's modulus. Image analysis was used to observe the extent of surface degradation. Analysis of the obtained results for the behavior of large grain size samples under conditions of rapid temperature changes is given.",
publisher = "9th International Conference on Multiscale and Functionally Graded Materials, FGM IX",
journal = "AIP Conference Proceedings",
title = "A fracture mechanics approach to thermal shock investigation in alumina-based refractory",
pages = "448-443",
volume = "973",
doi = "10.1063/1.2896819"
}

Volkov-Husović, T., Jančić-Heinemann, R.,& Mitraković, D.. (2008). A fracture mechanics approach to thermal shock investigation in alumina-based refractory. in AIP Conference Proceedings
9th International Conference on Multiscale and Functionally Graded Materials, FGM IX., 973, 443-448.
https://doi.org/10.1063/1.2896819

Volkov-Husović T, Jančić-Heinemann R, Mitraković D. A fracture mechanics approach to thermal shock investigation in alumina-based refractory. in AIP Conference Proceedings. 2008;973:443-448.
doi:10.1063/1.2896819 .

Volkov-Husović, Tatjana, Jančić-Heinemann, Radmila, Mitraković, Dragan, "A fracture mechanics approach to thermal shock investigation in alumina-based refractory" in AIP Conference Proceedings, 973 (2008):443-448,
https://doi.org/10.1063/1.2896819 . .

TY  - JOUR
AU  - Škundrić, Petar
AU  - Kostić, Mirjana
AU  - Medović, Adela
AU  - Pejić, Biljana
AU  - Kuraica, Milorad M.
AU  - Vucković, A.
AU  - Obradović, Bratislav
AU  - Mitraković, Dragan
AU  - Purić, J.
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1023
AB  - The influence of dielectric barrier discharge (DBD) on the physico-chemical properties of hemp fibres was studied in this paper. Plasma-modification of hemp fibres was performed at atmospheric pressure. The source of the DBD was developed in the Quantum Optics Laboratory of the Faculty of Physics in Belgrade as a device prototype with plane-parallel geometry, for the continuous plasma-modification or treatment of textile materials. The capillary rise method was applied to evaluate the improvement in water uptake of the DBD treated hemp fibres. The plasma-modified hemp fibres have highly improved wetting properties without changing physico-mechanical properties (tensile strength and elongation).
PB  - Taylor & Francis Inc, Philadelphia
T2  - Journal of Natural Fibers
T1  - Wetting properties of hemp fibres modified by plasma treatment
EP  - 33
IS  - 1
SP  - 25
VL  - 4
DO  - 10.1300/J395v04n01_03
ER  - 

@article{
author = "Škundrić, Petar and Kostić, Mirjana and Medović, Adela and Pejić, Biljana and Kuraica, Milorad M. and Vucković, A. and Obradović, Bratislav and Mitraković, Dragan and Purić, J.",
year = "2007",
abstract = "The influence of dielectric barrier discharge (DBD) on the physico-chemical properties of hemp fibres was studied in this paper. Plasma-modification of hemp fibres was performed at atmospheric pressure. The source of the DBD was developed in the Quantum Optics Laboratory of the Faculty of Physics in Belgrade as a device prototype with plane-parallel geometry, for the continuous plasma-modification or treatment of textile materials. The capillary rise method was applied to evaluate the improvement in water uptake of the DBD treated hemp fibres. The plasma-modified hemp fibres have highly improved wetting properties without changing physico-mechanical properties (tensile strength and elongation).",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Journal of Natural Fibers",
title = "Wetting properties of hemp fibres modified by plasma treatment",
pages = "33-25",
number = "1",
volume = "4",
doi = "10.1300/J395v04n01_03"
}

Škundrić, P., Kostić, M., Medović, A., Pejić, B., Kuraica, M. M., Vucković, A., Obradović, B., Mitraković, D.,& Purić, J.. (2007). Wetting properties of hemp fibres modified by plasma treatment. in Journal of Natural Fibers
Taylor & Francis Inc, Philadelphia., 4(1), 25-33.
https://doi.org/10.1300/J395v04n01_03

Škundrić P, Kostić M, Medović A, Pejić B, Kuraica MM, Vucković A, Obradović B, Mitraković D, Purić J. Wetting properties of hemp fibres modified by plasma treatment. in Journal of Natural Fibers. 2007;4(1):25-33.
doi:10.1300/J395v04n01_03 .

Škundrić, Petar, Kostić, Mirjana, Medović, Adela, Pejić, Biljana, Kuraica, Milorad M., Vucković, A., Obradović, Bratislav, Mitraković, Dragan, Purić, J., "Wetting properties of hemp fibres modified by plasma treatment" in Journal of Natural Fibers, 4, no. 1 (2007):25-33,
https://doi.org/10.1300/J395v04n01_03 . .

TY  - CONF
AU  - Kojović, Aleksandar
AU  - Živković, Irena
AU  - Brajović, Ljiljana
AU  - Mitraković, Dragan
AU  - Aleksić, Radoslav
PY  - 2006
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/860
PB  - 16th European Conference of Fracture
C3  - Fracture of Nano and Engineering Materials and Structures - Proceedings of the 16th European Confere
T1  - Laminar composite materials damage monitoring by embedded optical fibers
EP  - 1036
SP  - 1035
DO  - 10.1007/1-4020-4972-2_513
ER  - 

@conference{
author = "Kojović, Aleksandar and Živković, Irena and Brajović, Ljiljana and Mitraković, Dragan and Aleksić, Radoslav",
year = "2006",
publisher = "16th European Conference of Fracture",
journal = "Fracture of Nano and Engineering Materials and Structures - Proceedings of the 16th European Confere",
title = "Laminar composite materials damage monitoring by embedded optical fibers",
pages = "1036-1035",
doi = "10.1007/1-4020-4972-2_513"
}

Kojović, A., Živković, I., Brajović, L., Mitraković, D.,& Aleksić, R.. (2006). Laminar composite materials damage monitoring by embedded optical fibers. in Fracture of Nano and Engineering Materials and Structures - Proceedings of the 16th European Confere
16th European Conference of Fracture., 1035-1036.
https://doi.org/10.1007/1-4020-4972-2_513

Kojović A, Živković I, Brajović L, Mitraković D, Aleksić R. Laminar composite materials damage monitoring by embedded optical fibers. in Fracture of Nano and Engineering Materials and Structures - Proceedings of the 16th European Confere. 2006;:1035-1036.
doi:10.1007/1-4020-4972-2_513 .

Kojović, Aleksandar, Živković, Irena, Brajović, Ljiljana, Mitraković, Dragan, Aleksić, Radoslav, "Laminar composite materials damage monitoring by embedded optical fibers" in Fracture of Nano and Engineering Materials and Structures - Proceedings of the 16th European Confere (2006):1035-1036,
https://doi.org/10.1007/1-4020-4972-2_513 . .

TY  - JOUR
AU  - Volkov-Husović, Tatjana
AU  - Jančić-Heinemann, Radmila
AU  - Mitraković, Dragan
AU  - Acimović-Pavlović, Zagorka
AU  - Raić, Karlo
PY  - 2006
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/903
AB  - During examination of refractory specimen, one of the most important characteristics is their resistance to thermal shock. Standard method of testing is based on monitoring the surface shanging during thermal stability testing. Samples are photographed before and during thermal stability testing. Image analysis program was used to determine the amount of surface deterioriation. Obtained results for surface deterioriation were compared to the results of water quench test, as well as with strength degradation. The obtained results will be used for prediction of thermal stability behavior of refractory specimen.
AB  - Prilikom ispitivanja vatrostalnih materijala ispitivanje termošoka pretstavlja jednu od najvažnijih osobina. Standardna metoda ispitivanja termostabilnosti se zasniva na praćenju promena na površini uzorka usled naglih promena temperature. Uzorci se snimaju pre ispitivanja, i u toku ispitivanja otpornosti na termošok. Na osnovu upotrebe programa za analizu slike praćena je promena stepena oštećenja u uzorku. Dobijeni rezultati za promenu stepena oštećenja su upoređeni sa rezultatima standardne metode vodenog hlađenja, kao i sa promenom čvrstoće uzorka. Na osnovu analize dobijenih rezultata date su preporuke za predviđanje ponašanja materijala izloženog termošoku.
PB  - Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd
T2  - Materijali i konstrukcije
T1  - The use of image analysis program for the determination of surface deterioration of refractory specimen during thermal shock
T1  - Korišćenje programa za analizu slike za određivanje stepena oštećenja vatrostalnog uzorka pri termošoku
EP  - 63
IS  - 1-2
SP  - 60
VL  - 49
UR  - https://hdl.handle.net/21.15107/rcub_technorep_903
ER  - 

@article{
author = "Volkov-Husović, Tatjana and Jančić-Heinemann, Radmila and Mitraković, Dragan and Acimović-Pavlović, Zagorka and Raić, Karlo",
year = "2006",
abstract = "During examination of refractory specimen, one of the most important characteristics is their resistance to thermal shock. Standard method of testing is based on monitoring the surface shanging during thermal stability testing. Samples are photographed before and during thermal stability testing. Image analysis program was used to determine the amount of surface deterioriation. Obtained results for surface deterioriation were compared to the results of water quench test, as well as with strength degradation. The obtained results will be used for prediction of thermal stability behavior of refractory specimen., Prilikom ispitivanja vatrostalnih materijala ispitivanje termošoka pretstavlja jednu od najvažnijih osobina. Standardna metoda ispitivanja termostabilnosti se zasniva na praćenju promena na površini uzorka usled naglih promena temperature. Uzorci se snimaju pre ispitivanja, i u toku ispitivanja otpornosti na termošok. Na osnovu upotrebe programa za analizu slike praćena je promena stepena oštećenja u uzorku. Dobijeni rezultati za promenu stepena oštećenja su upoređeni sa rezultatima standardne metode vodenog hlađenja, kao i sa promenom čvrstoće uzorka. Na osnovu analize dobijenih rezultata date su preporuke za predviđanje ponašanja materijala izloženog termošoku.",
publisher = "Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd",
journal = "Materijali i konstrukcije",
title = "The use of image analysis program for the determination of surface deterioration of refractory specimen during thermal shock, Korišćenje programa za analizu slike za određivanje stepena oštećenja vatrostalnog uzorka pri termošoku",
pages = "63-60",
number = "1-2",
volume = "49",
url = "https://hdl.handle.net/21.15107/rcub_technorep_903"
}

Volkov-Husović, T., Jančić-Heinemann, R., Mitraković, D., Acimović-Pavlović, Z.,& Raić, K.. (2006). The use of image analysis program for the determination of surface deterioration of refractory specimen during thermal shock. in Materijali i konstrukcije
Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd., 49(1-2), 60-63.
https://hdl.handle.net/21.15107/rcub_technorep_903

Volkov-Husović T, Jančić-Heinemann R, Mitraković D, Acimović-Pavlović Z, Raić K. The use of image analysis program for the determination of surface deterioration of refractory specimen during thermal shock. in Materijali i konstrukcije. 2006;49(1-2):60-63.
https://hdl.handle.net/21.15107/rcub_technorep_903 .

Volkov-Husović, Tatjana, Jančić-Heinemann, Radmila, Mitraković, Dragan, Acimović-Pavlović, Zagorka, Raić, Karlo, "The use of image analysis program for the determination of surface deterioration of refractory specimen during thermal shock" in Materijali i konstrukcije, 49, no. 1-2 (2006):60-63,
https://hdl.handle.net/21.15107/rcub_technorep_903 .

TY  - JOUR
AU  - Kojović, Aleksandar
AU  - Živković, Irena
AU  - Brajović, Ljiljana
AU  - Mitraković, Dragan
AU  - Aleksić, Radoslav
PY  - 2006
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/951
AB  - This paper investigates the possibility of applying optical fibers as sensors for investigating low energy impact damage in laminar thermoplastic composite materials, in real time. Impact toughness testing by a Charpy impact pendulum with different loads was conducted in order to determine the method for comparative measurement of the resulting damage in the material. For that purpose intensity-based optical fibers were built in to specimens of composite materials with Kevlar 129 (the DuPont registered trade-mark for poly(p-phenylene terephthalamide)) woven fabric as reinforcement and thermoplastic PVB (poly(vinyl butyral)) as the matrix. In some specimens part of the layers of Kevlar was replaced with metal mesh (50% or 33% of the layers). Experimental testing was conducted in order to observe and analyze the response of the material under multiple low-energy impacts. Light from the light-emitting diode (LED) was launched to the embedded optical fiber and was propagated to the phototransistor-based photo detector. During each impact, the signal level, which is proportional to the light intensity in the optical fiber, drops and then slowly recovers. The obtained signals were analyzed to determine the appropriate method for real time damage monitoring. The major part of the damage occurs during impact. The damage reflects as a local, temporary release of strain in the optical fiber and an increase of the signal level. The obtained results show that intensity-based optical fibers could be used for measuring the damage in laminar thermoplastic composite materials. The acquired optical fiber signals depend on the type of material, but the same set of rules (relatively different, depending on the type of material) could be specified. Using real time measurement of the signal during impact and appropriate analysis enables quantitative evaluation of the impact damage in the material. Existing methods in most cases use just the intensity of the signal before and after the impact, as the measure of damage. This method could be used to monitor the damage in real time, giving warnings before fatal damage occurs.
AB  - Ovaj rad istražuje mogućnost primene optičkih vlakana kao senzora za ispitivanje oštećenja laminarnih termoplastičnih kompozitnih materijala nastalih usled udara niske energije, u realnom vremenu. Ispitivanje materijala na otpornost pri udaru niske energije, različitih nivoa, je vršeno Šarpijevim klatnom radi pronalaženja metodologije za komparativna merenja rezultujućih oštećenja u materijalu. Iz tog razloga su u uzorke kompozitnih materijala sa ojačanjem u vidu kombinacije Kevlara 129 i metalne mrežice, ili Kevlara 129 i termoplastičnim poli(vinil butiralom) kao matricom, ugrađeni fiberoptički senzori intenzitetnog tipa. Dobijeni rezultati su potvrdili opravdanost upotrebe optičkih vlakana kao senzora za detekciju oštećenja u laminarnim termoplastičnim kompozitnim materijalima u realnom vremenu.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Damage detection in laminar thermoplastic composite materials by means of embedded optical fibers
T1  - Detektovanje oštećenja u laminarnim termoplastičnim kompozitnim materijalima korišćenjem ugrađenih optičkih vlakana
EP  - 179
IS  - 7-8
SP  - 176
VL  - 60
DO  - 10.2298/HEMIND0608176K
ER  - 

@article{
author = "Kojović, Aleksandar and Živković, Irena and Brajović, Ljiljana and Mitraković, Dragan and Aleksić, Radoslav",
year = "2006",
abstract = "This paper investigates the possibility of applying optical fibers as sensors for investigating low energy impact damage in laminar thermoplastic composite materials, in real time. Impact toughness testing by a Charpy impact pendulum with different loads was conducted in order to determine the method for comparative measurement of the resulting damage in the material. For that purpose intensity-based optical fibers were built in to specimens of composite materials with Kevlar 129 (the DuPont registered trade-mark for poly(p-phenylene terephthalamide)) woven fabric as reinforcement and thermoplastic PVB (poly(vinyl butyral)) as the matrix. In some specimens part of the layers of Kevlar was replaced with metal mesh (50% or 33% of the layers). Experimental testing was conducted in order to observe and analyze the response of the material under multiple low-energy impacts. Light from the light-emitting diode (LED) was launched to the embedded optical fiber and was propagated to the phototransistor-based photo detector. During each impact, the signal level, which is proportional to the light intensity in the optical fiber, drops and then slowly recovers. The obtained signals were analyzed to determine the appropriate method for real time damage monitoring. The major part of the damage occurs during impact. The damage reflects as a local, temporary release of strain in the optical fiber and an increase of the signal level. The obtained results show that intensity-based optical fibers could be used for measuring the damage in laminar thermoplastic composite materials. The acquired optical fiber signals depend on the type of material, but the same set of rules (relatively different, depending on the type of material) could be specified. Using real time measurement of the signal during impact and appropriate analysis enables quantitative evaluation of the impact damage in the material. Existing methods in most cases use just the intensity of the signal before and after the impact, as the measure of damage. This method could be used to monitor the damage in real time, giving warnings before fatal damage occurs., Ovaj rad istražuje mogućnost primene optičkih vlakana kao senzora za ispitivanje oštećenja laminarnih termoplastičnih kompozitnih materijala nastalih usled udara niske energije, u realnom vremenu. Ispitivanje materijala na otpornost pri udaru niske energije, različitih nivoa, je vršeno Šarpijevim klatnom radi pronalaženja metodologije za komparativna merenja rezultujućih oštećenja u materijalu. Iz tog razloga su u uzorke kompozitnih materijala sa ojačanjem u vidu kombinacije Kevlara 129 i metalne mrežice, ili Kevlara 129 i termoplastičnim poli(vinil butiralom) kao matricom, ugrađeni fiberoptički senzori intenzitetnog tipa. Dobijeni rezultati su potvrdili opravdanost upotrebe optičkih vlakana kao senzora za detekciju oštećenja u laminarnim termoplastičnim kompozitnim materijalima u realnom vremenu.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Damage detection in laminar thermoplastic composite materials by means of embedded optical fibers, Detektovanje oštećenja u laminarnim termoplastičnim kompozitnim materijalima korišćenjem ugrađenih optičkih vlakana",
pages = "179-176",
number = "7-8",
volume = "60",
doi = "10.2298/HEMIND0608176K"
}

Kojović, A., Živković, I., Brajović, L., Mitraković, D.,& Aleksić, R.. (2006). Damage detection in laminar thermoplastic composite materials by means of embedded optical fibers. in Hemijska industrija
Association of Chemical Engineers of Serbia., 60(7-8), 176-179.
https://doi.org/10.2298/HEMIND0608176K

Kojović A, Živković I, Brajović L, Mitraković D, Aleksić R. Damage detection in laminar thermoplastic composite materials by means of embedded optical fibers. in Hemijska industrija. 2006;60(7-8):176-179.
doi:10.2298/HEMIND0608176K .

Kojović, Aleksandar, Živković, Irena, Brajović, Ljiljana, Mitraković, Dragan, Aleksić, Radoslav, "Damage detection in laminar thermoplastic composite materials by means of embedded optical fibers" in Hemijska industrija, 60, no. 7-8 (2006):176-179,
https://doi.org/10.2298/HEMIND0608176K . .

TY  - JOUR
AU  - Volkov-Husović, Tatjana
AU  - Jančić, Radmila
AU  - Mitraković, Dragan
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/741
AB  - Most important properties which are usually measured for refractories are work temperature and thermal stability. Thermal stability of the alumina based samples was measured using a standard laboratory procedure, the water quench test (JUS.B.D.8.319.). ImagePro Plus Program was used for image analysis of microphotographs of the samples before, during and after water quench test. Changes at the surface before, and after cycling were given. Mechanical characteristics were considered such as compressive strength, and dynamic modulus of elasticity. It was measured by resonance frequency measurements, as well as ultrasonic velocity. In this work the correlation between microstructure, ulatrasonic velosity and strength on thermal stability of the sample were investigated. The obtained results were used for validation of the model to predict the thermal stability of the refractory specimen.
PB  - 8th International Symposium on Multifunctional and Functionally Graded Materials, FGM2004
T2  - Materials Science Forum
T1  - Using the image analysis program for prediction of thermal stability behavior of refractory specimen
EP  - 566
SP  - 561
VL  - 492-493
DO  - 10.4028/0-87849-970-9.561
ER  - 

@article{
author = "Volkov-Husović, Tatjana and Jančić, Radmila and Mitraković, Dragan",
year = "2005",
abstract = "Most important properties which are usually measured for refractories are work temperature and thermal stability. Thermal stability of the alumina based samples was measured using a standard laboratory procedure, the water quench test (JUS.B.D.8.319.). ImagePro Plus Program was used for image analysis of microphotographs of the samples before, during and after water quench test. Changes at the surface before, and after cycling were given. Mechanical characteristics were considered such as compressive strength, and dynamic modulus of elasticity. It was measured by resonance frequency measurements, as well as ultrasonic velocity. In this work the correlation between microstructure, ulatrasonic velosity and strength on thermal stability of the sample were investigated. The obtained results were used for validation of the model to predict the thermal stability of the refractory specimen.",
publisher = "8th International Symposium on Multifunctional and Functionally Graded Materials, FGM2004",
journal = "Materials Science Forum",
title = "Using the image analysis program for prediction of thermal stability behavior of refractory specimen",
pages = "566-561",
volume = "492-493",
doi = "10.4028/0-87849-970-9.561"
}

Volkov-Husović, T., Jančić, R.,& Mitraković, D.. (2005). Using the image analysis program for prediction of thermal stability behavior of refractory specimen. in Materials Science Forum
8th International Symposium on Multifunctional and Functionally Graded Materials, FGM2004., 492-493, 561-566.
https://doi.org/10.4028/0-87849-970-9.561

Volkov-Husović T, Jančić R, Mitraković D. Using the image analysis program for prediction of thermal stability behavior of refractory specimen. in Materials Science Forum. 2005;492-493:561-566.
doi:10.4028/0-87849-970-9.561 .

Volkov-Husović, Tatjana, Jančić, Radmila, Mitraković, Dragan, "Using the image analysis program for prediction of thermal stability behavior of refractory specimen" in Materials Science Forum, 492-493 (2005):561-566,
https://doi.org/10.4028/0-87849-970-9.561 . .

TY  - JOUR
AU  - Kojović, Aleksandar
AU  - Uskoković, Petar
AU  - Aleksić, Radoslav
AU  - Mitraković, Dragan
AU  - Živković, Irena
AU  - Tomić, Miloš
AU  - Brajović, Ljiljana
AU  - Milinković, Stevan
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/748
AB  - The paper deals with the research in applying optical fibres (OF) as intensity-based sensors in real-time damage detection of laminar composite materials. For experimental purposes, thermoplastic laminar composite materials with embedded optical fibres were made. Manufactured specimens of aramid fiber/poly(vinyl butyral) with embedded optical fibres were subjected to various loads: static loading by indentation on the adapted tensile testing machine, low blow on Charpy pendulum, and ballistic impact by standard weaponry and ammunition. Initiation of damage and fracture during laminate testing was observed from the intensity drop of the light signal transmitted through the optical fibre. Experimental results confirmed that optical fibres could be applied as intensity sensors in real-time monitoring of structural changes in thermoplastic laminar composite materials.
AB  - Cilj ovoga rada je istraživanje primene optičkih vlakana (OV) kao intenzitetnih senzora za detekciju oštećenja laminarnih kompozitnih materijala u realnom vremenu. Za eksperimentalne potrebe su izraženi termoplastični laminarni kompozitni materijali sa ugrađenim optičkim vlaknima. Izračeni uzorci aramidno vlakno/poli(vinil-butiral) sa ugrađenim optičkim vlaknima izlagani su različitim vrstama opterećenja: statikom opterećenju utiskivanjem na adaptiranoj kidalici, udarima niske energije Šarpijevim klatnom i balistikim udarima standardnim oružjem i municijom. Inicijacija oštećenja i loma laminata tokom ispitivanja su detektovani praćenjem pada intenziteta svetlosnog signala propuštenog kroz optika vlakna. Rezultati eksperimenta su potvrdili da se optička vlakna mogu koristiti u toku rada (u realnom vremenu) kao intenzitetni senzori za detekciju strukturnih promena u laminarnim kompozitnim materijalima.
PB  - Society for Structural Integrity and Life, Institute for Material Testing
T2  - Integritet i vek konstrukcija
T1  - Damage monitoring of composite laminates by means of intensity based fiberoptic sensors
T1  - Praćenje oštećenja kompozitnih laminata pomoću fiberoptičkih senzora intenzitetnog tipa
EP  - 30
IS  - 1
SP  - 19
VL  - 5
UR  - https://hdl.handle.net/21.15107/rcub_grafar_84
ER  - 

@article{
author = "Kojović, Aleksandar and Uskoković, Petar and Aleksić, Radoslav and Mitraković, Dragan and Živković, Irena and Tomić, Miloš and Brajović, Ljiljana and Milinković, Stevan",
year = "2005",
abstract = "The paper deals with the research in applying optical fibres (OF) as intensity-based sensors in real-time damage detection of laminar composite materials. For experimental purposes, thermoplastic laminar composite materials with embedded optical fibres were made. Manufactured specimens of aramid fiber/poly(vinyl butyral) with embedded optical fibres were subjected to various loads: static loading by indentation on the adapted tensile testing machine, low blow on Charpy pendulum, and ballistic impact by standard weaponry and ammunition. Initiation of damage and fracture during laminate testing was observed from the intensity drop of the light signal transmitted through the optical fibre. Experimental results confirmed that optical fibres could be applied as intensity sensors in real-time monitoring of structural changes in thermoplastic laminar composite materials., Cilj ovoga rada je istraživanje primene optičkih vlakana (OV) kao intenzitetnih senzora za detekciju oštećenja laminarnih kompozitnih materijala u realnom vremenu. Za eksperimentalne potrebe su izraženi termoplastični laminarni kompozitni materijali sa ugrađenim optičkim vlaknima. Izračeni uzorci aramidno vlakno/poli(vinil-butiral) sa ugrađenim optičkim vlaknima izlagani su različitim vrstama opterećenja: statikom opterećenju utiskivanjem na adaptiranoj kidalici, udarima niske energije Šarpijevim klatnom i balistikim udarima standardnim oružjem i municijom. Inicijacija oštećenja i loma laminata tokom ispitivanja su detektovani praćenjem pada intenziteta svetlosnog signala propuštenog kroz optika vlakna. Rezultati eksperimenta su potvrdili da se optička vlakna mogu koristiti u toku rada (u realnom vremenu) kao intenzitetni senzori za detekciju strukturnih promena u laminarnim kompozitnim materijalima.",
publisher = "Society for Structural Integrity and Life, Institute for Material Testing",
journal = "Integritet i vek konstrukcija",
title = "Damage monitoring of composite laminates by means of intensity based fiberoptic sensors, Praćenje oštećenja kompozitnih laminata pomoću fiberoptičkih senzora intenzitetnog tipa",
pages = "30-19",
number = "1",
volume = "5",
url = "https://hdl.handle.net/21.15107/rcub_grafar_84"
}

Kojović, A., Uskoković, P., Aleksić, R., Mitraković, D., Živković, I., Tomić, M., Brajović, L.,& Milinković, S.. (2005). Damage monitoring of composite laminates by means of intensity based fiberoptic sensors. in Integritet i vek konstrukcija
Society for Structural Integrity and Life, Institute for Material Testing., 5(1), 19-30.
https://hdl.handle.net/21.15107/rcub_grafar_84

Kojović A, Uskoković P, Aleksić R, Mitraković D, Živković I, Tomić M, Brajović L, Milinković S. Damage monitoring of composite laminates by means of intensity based fiberoptic sensors. in Integritet i vek konstrukcija. 2005;5(1):19-30.
https://hdl.handle.net/21.15107/rcub_grafar_84 .

Kojović, Aleksandar, Uskoković, Petar, Aleksić, Radoslav, Mitraković, Dragan, Živković, Irena, Tomić, Miloš, Brajović, Ljiljana, Milinković, Stevan, "Damage monitoring of composite laminates by means of intensity based fiberoptic sensors" in Integritet i vek konstrukcija, 5, no. 1 (2005):19-30,
https://hdl.handle.net/21.15107/rcub_grafar_84 .

TY  - JOUR
AU  - Volkov-Husović, Tatjana
AU  - Jančić, Radmila
AU  - Mitraković, Dragan
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/740
T2  - American Ceramic Society Bulletin
T1  - Image analysis used to predict thermal stability of refractories
EP  - 9204
IS  - 10
SP  - 9201
VL  - 84
UR  - https://hdl.handle.net/21.15107/rcub_technorep_740
ER  - 

@article{
author = "Volkov-Husović, Tatjana and Jančić, Radmila and Mitraković, Dragan",
year = "2005",
journal = "American Ceramic Society Bulletin",
title = "Image analysis used to predict thermal stability of refractories",
pages = "9204-9201",
number = "10",
volume = "84",
url = "https://hdl.handle.net/21.15107/rcub_technorep_740"
}

Volkov-Husović, T., Jančić, R.,& Mitraković, D.. (2005). Image analysis used to predict thermal stability of refractories. in American Ceramic Society Bulletin, 84(10), 9201-9204.
https://hdl.handle.net/21.15107/rcub_technorep_740

Volkov-Husović T, Jančić R, Mitraković D. Image analysis used to predict thermal stability of refractories. in American Ceramic Society Bulletin. 2005;84(10):9201-9204.
https://hdl.handle.net/21.15107/rcub_technorep_740 .

Volkov-Husović, Tatjana, Jančić, Radmila, Mitraković, Dragan, "Image analysis used to predict thermal stability of refractories" in American Ceramic Society Bulletin, 84, no. 10 (2005):9201-9204,
https://hdl.handle.net/21.15107/rcub_technorep_740 .

TY  - JOUR
AU  - Kojović, Aleksandar
AU  - Živković, Irena
AU  - Brajović, Ljiljana
AU  - Mitraković, Dragan
AU  - Aleksić, Radoslav
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/722
AB  - The possibility of applying optical fibers as sensors for investigation of real time low energy impact damage in laminar thermoplastic composite materials has been studied. For that purpose intensity based optical fibers were embedded in composite material specimens. Kevlar 129 (DuPont's registered trade-mark for poly (p-phenylene terephthalamide)) woven fabric was used as reinforcement. Impact toughness testing by the Charpy impact pendulum was conducted in order to investigate low energy impacts. Transient intensity of optical signal during the impact, were compared with material crack initiation energy and crack propagation energy. Following this approach, development of damage in material was monitored. Obtained results show that intensity based optical fibers could be used as detectors for material damage appearance, and also, for level evaluation of its degradation caused by low energy impacts.
PB  - 6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes
T2  - Materials Science Forum
T1  - Low energy impact damage detection in laminar termoplastic composite materials by means of embedded optical fibers
EP  - 486
SP  - 481
VL  - 494
DO  - 10.4028/0-87849-971-7.481
ER  - 

@article{
author = "Kojović, Aleksandar and Živković, Irena and Brajović, Ljiljana and Mitraković, Dragan and Aleksić, Radoslav",
year = "2005",
abstract = "The possibility of applying optical fibers as sensors for investigation of real time low energy impact damage in laminar thermoplastic composite materials has been studied. For that purpose intensity based optical fibers were embedded in composite material specimens. Kevlar 129 (DuPont's registered trade-mark for poly (p-phenylene terephthalamide)) woven fabric was used as reinforcement. Impact toughness testing by the Charpy impact pendulum was conducted in order to investigate low energy impacts. Transient intensity of optical signal during the impact, were compared with material crack initiation energy and crack propagation energy. Following this approach, development of damage in material was monitored. Obtained results show that intensity based optical fibers could be used as detectors for material damage appearance, and also, for level evaluation of its degradation caused by low energy impacts.",
publisher = "6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes",
journal = "Materials Science Forum",
title = "Low energy impact damage detection in laminar termoplastic composite materials by means of embedded optical fibers",
pages = "486-481",
volume = "494",
doi = "10.4028/0-87849-971-7.481"
}

Kojović, A., Živković, I., Brajović, L., Mitraković, D.,& Aleksić, R.. (2005). Low energy impact damage detection in laminar termoplastic composite materials by means of embedded optical fibers. in Materials Science Forum
6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes., 494, 481-486.
https://doi.org/10.4028/0-87849-971-7.481

Kojović A, Živković I, Brajović L, Mitraković D, Aleksić R. Low energy impact damage detection in laminar termoplastic composite materials by means of embedded optical fibers. in Materials Science Forum. 2005;494:481-486.
doi:10.4028/0-87849-971-7.481 .

Kojović, Aleksandar, Živković, Irena, Brajović, Ljiljana, Mitraković, Dragan, Aleksić, Radoslav, "Low energy impact damage detection in laminar termoplastic composite materials by means of embedded optical fibers" in Materials Science Forum, 494 (2005):481-486,
https://doi.org/10.4028/0-87849-971-7.481 . .

TY  - JOUR
AU  - Perović, Gordan
AU  - Mitraković, Dragan
AU  - Grozdić, Tomislav D.
AU  - Živković, Predrag M.
PY  - 2003
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/540
AB  - The paper discusses methods for determining the specificity of reproductions (forgeries) of protected documents obtained through various printing techniques. The methods are based on the analysis of printed proofs and measuring of dimensions of characteristic, enlarged details, obtained with a microscope and a digital camera. The software for the analysis is Image Pro Plus. The paper defines methods for measuring the two dimensional parameters: line width and screen dot’s radius. Proofs of reproductions were examined of the vehicle registration card and the FRY passport, obtained with digital printers and offset printing machines, and it was proved that the discussed geometric characteristics may be used as the criteria for detection of forgeries.
AB  - U radu su navedene metode za određivanje specifičnosti reprodukcija (falsifikata) zaštićenih dokumenata dobijenih različitim tehnikama štampanja. Metode se baziraju na analizi štampanih otisaka i merenju dimenzija karakterističnih, uvećanih detalja, dobijenih pomoću mikroskopa i digitalne kamere. Kao softver za analizu koristi se program Image Pro Plus. Definisane su metode za merenje dva dimenziona parametra: širine linije i poluprečnika rasterske tačke. Ispitani su otisci reprodukcija saobraćajne dozvole i pasoša SRJ, dobijeni pomoću digitalnih štampača i ofset štamparskih mašina. Pokazano je da se razmatrane geometrijske karakteristike mogu koristiti kao kriterijum za utvrđivanje falsifikata.
PB  - Institut bezbednosti, Beograd
T2  - Nauka, tehnika, bezbednost
T1  - Documents inspection through analysis of microelements in proofs
T1  - Analiza dimenzija mikroelemenata otiska u postupku provere originalnosti dokumenata
EP  - 101
IS  - 3
SP  - 95
VL  - 13
UR  - https://hdl.handle.net/21.15107/rcub_technorep_540
ER  - 

@article{
author = "Perović, Gordan and Mitraković, Dragan and Grozdić, Tomislav D. and Živković, Predrag M.",
year = "2003",
abstract = "The paper discusses methods for determining the specificity of reproductions (forgeries) of protected documents obtained through various printing techniques. The methods are based on the analysis of printed proofs and measuring of dimensions of characteristic, enlarged details, obtained with a microscope and a digital camera. The software for the analysis is Image Pro Plus. The paper defines methods for measuring the two dimensional parameters: line width and screen dot’s radius. Proofs of reproductions were examined of the vehicle registration card and the FRY passport, obtained with digital printers and offset printing machines, and it was proved that the discussed geometric characteristics may be used as the criteria for detection of forgeries., U radu su navedene metode za određivanje specifičnosti reprodukcija (falsifikata) zaštićenih dokumenata dobijenih različitim tehnikama štampanja. Metode se baziraju na analizi štampanih otisaka i merenju dimenzija karakterističnih, uvećanih detalja, dobijenih pomoću mikroskopa i digitalne kamere. Kao softver za analizu koristi se program Image Pro Plus. Definisane su metode za merenje dva dimenziona parametra: širine linije i poluprečnika rasterske tačke. Ispitani su otisci reprodukcija saobraćajne dozvole i pasoša SRJ, dobijeni pomoću digitalnih štampača i ofset štamparskih mašina. Pokazano je da se razmatrane geometrijske karakteristike mogu koristiti kao kriterijum za utvrđivanje falsifikata.",
publisher = "Institut bezbednosti, Beograd",
journal = "Nauka, tehnika, bezbednost",
title = "Documents inspection through analysis of microelements in proofs, Analiza dimenzija mikroelemenata otiska u postupku provere originalnosti dokumenata",
pages = "101-95",
number = "3",
volume = "13",
url = "https://hdl.handle.net/21.15107/rcub_technorep_540"
}

Perović, G., Mitraković, D., Grozdić, T. D.,& Živković, P. M.. (2003). Documents inspection through analysis of microelements in proofs. in Nauka, tehnika, bezbednost
Institut bezbednosti, Beograd., 13(3), 95-101.
https://hdl.handle.net/21.15107/rcub_technorep_540

Perović G, Mitraković D, Grozdić TD, Živković PM. Documents inspection through analysis of microelements in proofs. in Nauka, tehnika, bezbednost. 2003;13(3):95-101.
https://hdl.handle.net/21.15107/rcub_technorep_540 .

Perović, Gordan, Mitraković, Dragan, Grozdić, Tomislav D., Živković, Predrag M., "Documents inspection through analysis of microelements in proofs" in Nauka, tehnika, bezbednost, 13, no. 3 (2003):95-101,
https://hdl.handle.net/21.15107/rcub_technorep_540 .

TY  - JOUR
AU  - Jančić, Radmila
AU  - Trifunović, Dejan
AU  - Kotanjac, Željko
AU  - Mitraković, Dragan
PY  - 2003
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/550
AB  - The procedure for measuring the thickness of anticorrosion protective layer of zinc on steel is given. The metallographic images are used for this measurement. Results are statistically handled and results are used to determine the uniformity of the thickness of the layer. The procedure was used to determine the quality of protective layers obtained form specimens produced by two different producers.
AB  - Dat je prikaz postupka merenja debljine zaštitnog sloja cinka na čeliku korišćenjem programa za analizu slike. Na metalografskim snimcima preseka zaštitnog sloja cinka na čeliku merene su debljine zaštitnog sloja i potom su podaci statistički obrađeni. Rezultati statističke analize korišćeni su za upoređenje kvaliteta prevlake na dva uzorka dobijena od različitih proizvođača.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metalurgija
T1  - Image analysis of protective layer of zinc on steel obtained using the hot process
T1  - Analiza slike za karakterisanje zaštitnog sloja cinka na čeliku dobijenog toplim cinkovanjem
EP  - 68
IS  - 1
SP  - 63
VL  - 9
UR  - https://hdl.handle.net/21.15107/rcub_technorep_550
ER  - 

@article{
author = "Jančić, Radmila and Trifunović, Dejan and Kotanjac, Željko and Mitraković, Dragan",
year = "2003",
abstract = "The procedure for measuring the thickness of anticorrosion protective layer of zinc on steel is given. The metallographic images are used for this measurement. Results are statistically handled and results are used to determine the uniformity of the thickness of the layer. The procedure was used to determine the quality of protective layers obtained form specimens produced by two different producers., Dat je prikaz postupka merenja debljine zaštitnog sloja cinka na čeliku korišćenjem programa za analizu slike. Na metalografskim snimcima preseka zaštitnog sloja cinka na čeliku merene su debljine zaštitnog sloja i potom su podaci statistički obrađeni. Rezultati statističke analize korišćeni su za upoređenje kvaliteta prevlake na dva uzorka dobijena od različitih proizvođača.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metalurgija",
title = "Image analysis of protective layer of zinc on steel obtained using the hot process, Analiza slike za karakterisanje zaštitnog sloja cinka na čeliku dobijenog toplim cinkovanjem",
pages = "68-63",
number = "1",
volume = "9",
url = "https://hdl.handle.net/21.15107/rcub_technorep_550"
}

Jančić, R., Trifunović, D., Kotanjac, Ž.,& Mitraković, D.. (2003). Image analysis of protective layer of zinc on steel obtained using the hot process. in Metalurgija
Savez inženjera metalurgije Srbije, Beograd., 9(1), 63-68.
https://hdl.handle.net/21.15107/rcub_technorep_550

Jančić R, Trifunović D, Kotanjac Ž, Mitraković D. Image analysis of protective layer of zinc on steel obtained using the hot process. in Metalurgija. 2003;9(1):63-68.
https://hdl.handle.net/21.15107/rcub_technorep_550 .

Jančić, Radmila, Trifunović, Dejan, Kotanjac, Željko, Mitraković, Dragan, "Image analysis of protective layer of zinc on steel obtained using the hot process" in Metalurgija, 9, no. 1 (2003):63-68,
https://hdl.handle.net/21.15107/rcub_technorep_550 .

TY  - JOUR
AU  - Jančić, Radmila
AU  - Mitraković, Dragan
AU  - Aleksić, Radoslav
PY  - 2002
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/420
AB  - Precursor fibers are made from the aluminium-hydroxide chloride based sols. The process stability can be influenced both by the fiber formation conditions and the rheology of the sol. The distance from the disk canter is the same, and the rotation speed is changed in one set of experiments. Four different sols are used under the fixed fiber formation conditions in the second set of experiments. Obtained fibers were dried at room temperature. The image analysis program, Lira 98 developed at the Faculty of Technology and Metallurgy in Belgrade, is used to measure fibers diameters. Obtained results are statistically handled. The fibers diameters coefficients of variation are used to evaluate the process stability dependence on fiber formation conditions and sol rheological properties.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metalurgija
T1  - Rotating disk alumina precursor fiber formation process stability determination using image analysis
EP  - 221
IS  - 3
SP  - 215
VL  - 8
UR  - https://hdl.handle.net/21.15107/rcub_technorep_420
ER  - 

@article{
author = "Jančić, Radmila and Mitraković, Dragan and Aleksić, Radoslav",
year = "2002",
abstract = "Precursor fibers are made from the aluminium-hydroxide chloride based sols. The process stability can be influenced both by the fiber formation conditions and the rheology of the sol. The distance from the disk canter is the same, and the rotation speed is changed in one set of experiments. Four different sols are used under the fixed fiber formation conditions in the second set of experiments. Obtained fibers were dried at room temperature. The image analysis program, Lira 98 developed at the Faculty of Technology and Metallurgy in Belgrade, is used to measure fibers diameters. Obtained results are statistically handled. The fibers diameters coefficients of variation are used to evaluate the process stability dependence on fiber formation conditions and sol rheological properties.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metalurgija",
title = "Rotating disk alumina precursor fiber formation process stability determination using image analysis",
pages = "221-215",
number = "3",
volume = "8",
url = "https://hdl.handle.net/21.15107/rcub_technorep_420"
}

Jančić, R., Mitraković, D.,& Aleksić, R.. (2002). Rotating disk alumina precursor fiber formation process stability determination using image analysis. in Metalurgija
Savez inženjera metalurgije Srbije, Beograd., 8(3), 215-221.
https://hdl.handle.net/21.15107/rcub_technorep_420

Jančić R, Mitraković D, Aleksić R. Rotating disk alumina precursor fiber formation process stability determination using image analysis. in Metalurgija. 2002;8(3):215-221.
https://hdl.handle.net/21.15107/rcub_technorep_420 .

Jančić, Radmila, Mitraković, Dragan, Aleksić, Radoslav, "Rotating disk alumina precursor fiber formation process stability determination using image analysis" in Metalurgija, 8, no. 3 (2002):215-221,
https://hdl.handle.net/21.15107/rcub_technorep_420 .

TY  - JOUR
AU  - Volkov-Husović, Tatjana
AU  - Jančić, Radmila
AU  - Cvetković, M
AU  - Mitraković, Dragan
AU  - Popović, Z.
PY  - 1999
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/246
AB  - The prediction of refractories thermal shock behavior can be estimated on two basis: heat transfer conditions and/or fracture mechanics concept. Materials considered in our analysis were alumina based refractories with different (Al2O3 + TiO2) content from 28% to 78%. Model for temperature and stress distribution calculation was presented in this paper. The thermal and mechanical properties of the materials were measured using standard laboratory procedure. Thermal stability of the refractories was measured by water quench test (JUS. B. Ds. 319.). The samples were dried at 110 degrees C and then transferred into electric furnace at 950 degrees C and held there for 15 min. The pieces were then moved into water and left for 3 min before returning to the furnace at 950 degrees C. This procedure is repeated until failure. The number of quenches to failure was taken as a measure of a thermal shock resistance. From the average values of the thermal and mechanical properties fracture resistance parameters were calculated. Heat transfer coefficient and Blot number were calculated using the equations given by Holman assuming the free convection. Results from the linear regression analysis showed that fracture resistance parameters can be correlated with the measured number of cycles of water quench test.
PB  - Elsevier, Amsterdam
T2  - Materials Letters
T1  - Thermal shock behavior of alumina based refractories: fracture resistance parameters and water quench test
EP  - 378
IS  - 5
SP  - 372
VL  - 38
DO  - 10.1016/S0167-577X(98)00192-X
ER  - 

@article{
author = "Volkov-Husović, Tatjana and Jančić, Radmila and Cvetković, M and Mitraković, Dragan and Popović, Z.",
year = "1999",
abstract = "The prediction of refractories thermal shock behavior can be estimated on two basis: heat transfer conditions and/or fracture mechanics concept. Materials considered in our analysis were alumina based refractories with different (Al2O3 + TiO2) content from 28% to 78%. Model for temperature and stress distribution calculation was presented in this paper. The thermal and mechanical properties of the materials were measured using standard laboratory procedure. Thermal stability of the refractories was measured by water quench test (JUS. B. Ds. 319.). The samples were dried at 110 degrees C and then transferred into electric furnace at 950 degrees C and held there for 15 min. The pieces were then moved into water and left for 3 min before returning to the furnace at 950 degrees C. This procedure is repeated until failure. The number of quenches to failure was taken as a measure of a thermal shock resistance. From the average values of the thermal and mechanical properties fracture resistance parameters were calculated. Heat transfer coefficient and Blot number were calculated using the equations given by Holman assuming the free convection. Results from the linear regression analysis showed that fracture resistance parameters can be correlated with the measured number of cycles of water quench test.",
publisher = "Elsevier, Amsterdam",
journal = "Materials Letters",
title = "Thermal shock behavior of alumina based refractories: fracture resistance parameters and water quench test",
pages = "378-372",
number = "5",
volume = "38",
doi = "10.1016/S0167-577X(98)00192-X"
}

Volkov-Husović, T., Jančić, R., Cvetković, M., Mitraković, D.,& Popović, Z.. (1999). Thermal shock behavior of alumina based refractories: fracture resistance parameters and water quench test. in Materials Letters
Elsevier, Amsterdam., 38(5), 372-378.
https://doi.org/10.1016/S0167-577X(98)00192-X

Volkov-Husović T, Jančić R, Cvetković M, Mitraković D, Popović Z. Thermal shock behavior of alumina based refractories: fracture resistance parameters and water quench test. in Materials Letters. 1999;38(5):372-378.
doi:10.1016/S0167-577X(98)00192-X .

Volkov-Husović, Tatjana, Jančić, Radmila, Cvetković, M, Mitraković, Dragan, Popović, Z., "Thermal shock behavior of alumina based refractories: fracture resistance parameters and water quench test" in Materials Letters, 38, no. 5 (1999):372-378,
https://doi.org/10.1016/S0167-577X(98)00192-X . .