TY  - JOUR
AU  - Jovanović, Aleksandar
AU  - Bakić, Gordana
AU  - Golubović, Tamara
AU  - Kirin, Snežana
AU  - Sedmak, Aleksandar
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7153
AB  - The integrity assessment of high pressure steam pipeline
primarily requires stress state determination, including not
only effects of working pressure and temperature, but also
all acting loads. Toward this aim, the application of numerical methods for calculating the stress state is the best option.
Here, the integrity assessment of one of the collectors of the
RA line at Block 1 of ‘Nikola Tesla’ B Thermal Power Plant
is shown, which was the subject of reconstruction due to a
manufacturing defect in one of the welded joints. Integrity
and risk of the steam line is assessed using fracture
mechanics parameters, including microstructural analysis.
AB  - Procena integriteta parovoda pod visokim pritiskom zahteva prvenstveno utvrđivanje naponskog stanja materijala,
pri čemu treba uzeti u obzir ne samo uticaj radnog pritiska
i temperature, već i sva delujuća opterećenja. Primena neke
od numeričkih metoda proračuna za analizu naponskog
stanja je najbolji alat. Ovde je prikazana je procena integriteta jednog od kolektora RA linije na Bloku 1 Termoelektrane ’Nikola Tesla’ B koji je bio predmet rekonstrukcije
zbog greške na jednom od zavarenih spojeva. Integritet i
rizik parovoda je procenjen primenom parametra mehanike
loma, uz analizu mikrostrukture.
PB  - Society for Structural Integrity and Life (DIVK)
T2  - Structural Integrity and Life
T1  - INTEGRITY AND RISK ASSESSMENT OF RECONSTRUCTED STEAM LINE
T1  - PROCENA INTEGRITETA I RIZIKA REKONSTRUISANOG PAROVODA
EP  - 371
IS  - 3
SP  - 367
VL  - 23
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7153
ER  - 

@article{
author = "Jovanović, Aleksandar and Bakić, Gordana and Golubović, Tamara and Kirin, Snežana and Sedmak, Aleksandar",
year = "2023",
abstract = "The integrity assessment of high pressure steam pipeline
primarily requires stress state determination, including not
only effects of working pressure and temperature, but also
all acting loads. Toward this aim, the application of numerical methods for calculating the stress state is the best option.
Here, the integrity assessment of one of the collectors of the
RA line at Block 1 of ‘Nikola Tesla’ B Thermal Power Plant
is shown, which was the subject of reconstruction due to a
manufacturing defect in one of the welded joints. Integrity
and risk of the steam line is assessed using fracture
mechanics parameters, including microstructural analysis., Procena integriteta parovoda pod visokim pritiskom zahteva prvenstveno utvrđivanje naponskog stanja materijala,
pri čemu treba uzeti u obzir ne samo uticaj radnog pritiska
i temperature, već i sva delujuća opterećenja. Primena neke
od numeričkih metoda proračuna za analizu naponskog
stanja je najbolji alat. Ovde je prikazana je procena integriteta jednog od kolektora RA linije na Bloku 1 Termoelektrane ’Nikola Tesla’ B koji je bio predmet rekonstrukcije
zbog greške na jednom od zavarenih spojeva. Integritet i
rizik parovoda je procenjen primenom parametra mehanike
loma, uz analizu mikrostrukture.",
publisher = "Society for Structural Integrity and Life (DIVK)",
journal = "Structural Integrity and Life",
title = "INTEGRITY AND RISK ASSESSMENT OF RECONSTRUCTED STEAM LINE, PROCENA INTEGRITETA I RIZIKA REKONSTRUISANOG PAROVODA",
pages = "371-367",
number = "3",
volume = "23",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7153"
}

Jovanović, A., Bakić, G., Golubović, T., Kirin, S.,& Sedmak, A.. (2023). INTEGRITY AND RISK ASSESSMENT OF RECONSTRUCTED STEAM LINE. in Structural Integrity and Life
Society for Structural Integrity and Life (DIVK)., 23(3), 367-371.
https://hdl.handle.net/21.15107/rcub_technorep_7153

Jovanović A, Bakić G, Golubović T, Kirin S, Sedmak A. INTEGRITY AND RISK ASSESSMENT OF RECONSTRUCTED STEAM LINE. in Structural Integrity and Life. 2023;23(3):367-371.
https://hdl.handle.net/21.15107/rcub_technorep_7153 .

Jovanović, Aleksandar, Bakić, Gordana, Golubović, Tamara, Kirin, Snežana, Sedmak, Aleksandar, "INTEGRITY AND RISK ASSESSMENT OF RECONSTRUCTED STEAM LINE" in Structural Integrity and Life, 23, no. 3 (2023):367-371,
https://hdl.handle.net/21.15107/rcub_technorep_7153 .

TY  - JOUR
AU  - Mitrović, Aleksandra
AU  - Antonović, Dušan
AU  - Tanasić, Ivan
AU  - Mitrović, Nenad
AU  - Bakić, Gordana
AU  - Popović, Dejana
AU  - Milošević, Miloš
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5880
AB  - The introduction of resin-based cements and an adhesive-bonding system in daily dental practice has given the opportunity to increase the retention of previously conventional cemented restorations and the optimal results in esthetic. This experimental study employed the 3D Digital Image Correlation Method (3D-DIC) for detecting shrinkage strain in four dual cured composite cements. The aim was to visualize measure, analyze, and compare strain fields in four resin-based cements using the 3D-DIC method. A total of 72 samples were divided into 4 groups considering variations in sample types, diameter, and thickness. Four types of composite cements: RelyX U200 (3 M ESPE, St. Paul, MN, USA), MaxCem Elite (Kerr, Orange, CA, USA), Multilink Automix (Ivoclar Vivadent, Schaan, Liechtenstein), and SeT PP (SDI, Australia) were used. Each type had diameters of 3 mm, 4 mm, and 5 mm, respectively, combined with two different values of thickness: 1 mm and 2 mm. Thickness had an important role on strain detected in all tested materials showing higher strain in samples with 2 mm thickness compared to 1 mm samples. Shrinkage strain values were the highest in Set PP samples indicated the possibility of undesirable de-bonding.
PB  - Hindawi Limited
T2  - BioMed Research International
T1  - 3D Digital Image Correlation Analysis of the Shrinkage Strain in Four Dual Cure Composite Cements
SP  - 2041348
VL  - 2019
DO  - 10.1155/2019/2041348
ER  - 

@article{
author = "Mitrović, Aleksandra and Antonović, Dušan and Tanasić, Ivan and Mitrović, Nenad and Bakić, Gordana and Popović, Dejana and Milošević, Miloš",
year = "2019",
abstract = "The introduction of resin-based cements and an adhesive-bonding system in daily dental practice has given the opportunity to increase the retention of previously conventional cemented restorations and the optimal results in esthetic. This experimental study employed the 3D Digital Image Correlation Method (3D-DIC) for detecting shrinkage strain in four dual cured composite cements. The aim was to visualize measure, analyze, and compare strain fields in four resin-based cements using the 3D-DIC method. A total of 72 samples were divided into 4 groups considering variations in sample types, diameter, and thickness. Four types of composite cements: RelyX U200 (3 M ESPE, St. Paul, MN, USA), MaxCem Elite (Kerr, Orange, CA, USA), Multilink Automix (Ivoclar Vivadent, Schaan, Liechtenstein), and SeT PP (SDI, Australia) were used. Each type had diameters of 3 mm, 4 mm, and 5 mm, respectively, combined with two different values of thickness: 1 mm and 2 mm. Thickness had an important role on strain detected in all tested materials showing higher strain in samples with 2 mm thickness compared to 1 mm samples. Shrinkage strain values were the highest in Set PP samples indicated the possibility of undesirable de-bonding.",
publisher = "Hindawi Limited",
journal = "BioMed Research International",
title = "3D Digital Image Correlation Analysis of the Shrinkage Strain in Four Dual Cure Composite Cements",
pages = "2041348",
volume = "2019",
doi = "10.1155/2019/2041348"
}

Mitrović, A., Antonović, D., Tanasić, I., Mitrović, N., Bakić, G., Popović, D.,& Milošević, M.. (2019). 3D Digital Image Correlation Analysis of the Shrinkage Strain in Four Dual Cure Composite Cements. in BioMed Research International
Hindawi Limited., 2019, 2041348.
https://doi.org/10.1155/2019/2041348

Mitrović A, Antonović D, Tanasić I, Mitrović N, Bakić G, Popović D, Milošević M. 3D Digital Image Correlation Analysis of the Shrinkage Strain in Four Dual Cure Composite Cements. in BioMed Research International. 2019;2019:2041348.
doi:10.1155/2019/2041348 .

Mitrović, Aleksandra, Antonović, Dušan, Tanasić, Ivan, Mitrović, Nenad, Bakić, Gordana, Popović, Dejana, Milošević, Miloš, "3D Digital Image Correlation Analysis of the Shrinkage Strain in Four Dual Cure Composite Cements" in BioMed Research International, 2019 (2019):2041348,
https://doi.org/10.1155/2019/2041348 . .

TY  - JOUR
AU  - Mitrović, Aleksandra
AU  - Tanasić, Ivan
AU  - Mitrović, Nenad
AU  - Miletić, Vesna
AU  - Bakić, Gordana
AU  - Milošević, Miloš
AU  - Antonović, Dušan
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5878
AB  - The study showed an application of the 3 D Digital Image Correlation Method (3 D-DIC) for detection of von Mises strain in samples of the self-etch, self-adhesive resin based cement (RBC). The aim was to determine and compare strain in the self-cured and light-cured Maxcem Elite, furthermore to investigate the hardness of these two cement-types. The experiment was carried out using two groups of Maxcem Elite (Kerr, Orange, CA, USA) samples; each tested group includes five (o5 x 2 mm sized) samples, for both self-curing and light-curing mode. All samples were prepared by filling teflon ring-type molds. In addition, Vickers micro-hardness was measured for all samples. Maxcem Elite showed similar maximum strain values from 10% to 12% for both groups. Besides the maximum strain value, the 3 D-DIC method also enabled monitoring the change of strain field even after the recommended polymerization time. This method has shown that the polymerization shrinkage continues even after 10 min which disagreed with manufacturer's suggestion. Group II showed maximum strain values of 12% in the peripheral zone after 10 min, in the last Stage (Stage 60). Statistically significant difference was not found in the overall strain between self- and light-cured Maxcem Elite neither peripherally (p = 0.118) nor centrally (p = 0.879). However, statistical significance was found in strain regarding central and peripheral zone in both, self-cured (p = 0.020) and light-cured (p = 0.002) Maxcem Elite. The mean von Mises strain values in the periphery of the samples (Section 0) were significantly higher compared to strain values in the center of the samples (for Section 1 and 2). The last stage (Stage 60) of the light-cured Maxcem Elite polymerization showed significantly higher values of von Mises strain compared to initial stage (Stage 0). Higher values of micro-hardness were noticed on the surfaces directly exposed to LED lamp after performing measurements of micro-hardness on light-cured samples.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Journal of Adhesion Science & Technology
T1  - Analysis of the strain and hardness in self-cured and light-cured self-adhesive resin based cement
EP  - 2695
IS  - 24
SP  - 2684
VL  - 33
DO  - 10.1080/01694243.2019.1654221
ER  - 

@article{
author = "Mitrović, Aleksandra and Tanasić, Ivan and Mitrović, Nenad and Miletić, Vesna and Bakić, Gordana and Milošević, Miloš and Antonović, Dušan",
year = "2019",
abstract = "The study showed an application of the 3 D Digital Image Correlation Method (3 D-DIC) for detection of von Mises strain in samples of the self-etch, self-adhesive resin based cement (RBC). The aim was to determine and compare strain in the self-cured and light-cured Maxcem Elite, furthermore to investigate the hardness of these two cement-types. The experiment was carried out using two groups of Maxcem Elite (Kerr, Orange, CA, USA) samples; each tested group includes five (o5 x 2 mm sized) samples, for both self-curing and light-curing mode. All samples were prepared by filling teflon ring-type molds. In addition, Vickers micro-hardness was measured for all samples. Maxcem Elite showed similar maximum strain values from 10% to 12% for both groups. Besides the maximum strain value, the 3 D-DIC method also enabled monitoring the change of strain field even after the recommended polymerization time. This method has shown that the polymerization shrinkage continues even after 10 min which disagreed with manufacturer's suggestion. Group II showed maximum strain values of 12% in the peripheral zone after 10 min, in the last Stage (Stage 60). Statistically significant difference was not found in the overall strain between self- and light-cured Maxcem Elite neither peripherally (p = 0.118) nor centrally (p = 0.879). However, statistical significance was found in strain regarding central and peripheral zone in both, self-cured (p = 0.020) and light-cured (p = 0.002) Maxcem Elite. The mean von Mises strain values in the periphery of the samples (Section 0) were significantly higher compared to strain values in the center of the samples (for Section 1 and 2). The last stage (Stage 60) of the light-cured Maxcem Elite polymerization showed significantly higher values of von Mises strain compared to initial stage (Stage 0). Higher values of micro-hardness were noticed on the surfaces directly exposed to LED lamp after performing measurements of micro-hardness on light-cured samples.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Journal of Adhesion Science & Technology",
title = "Analysis of the strain and hardness in self-cured and light-cured self-adhesive resin based cement",
pages = "2695-2684",
number = "24",
volume = "33",
doi = "10.1080/01694243.2019.1654221"
}

Mitrović, A., Tanasić, I., Mitrović, N., Miletić, V., Bakić, G., Milošević, M.,& Antonović, D.. (2019). Analysis of the strain and hardness in self-cured and light-cured self-adhesive resin based cement. in Journal of Adhesion Science & Technology
Taylor & Francis Ltd, Abingdon., 33(24), 2684-2695.
https://doi.org/10.1080/01694243.2019.1654221

Mitrović A, Tanasić I, Mitrović N, Miletić V, Bakić G, Milošević M, Antonović D. Analysis of the strain and hardness in self-cured and light-cured self-adhesive resin based cement. in Journal of Adhesion Science & Technology. 2019;33(24):2684-2695.
doi:10.1080/01694243.2019.1654221 .

Mitrović, Aleksandra, Tanasić, Ivan, Mitrović, Nenad, Miletić, Vesna, Bakić, Gordana, Milošević, Miloš, Antonović, Dušan, "Analysis of the strain and hardness in self-cured and light-cured self-adhesive resin based cement" in Journal of Adhesion Science & Technology, 33, no. 24 (2019):2684-2695,
https://doi.org/10.1080/01694243.2019.1654221 . .

TY  - JOUR
AU  - Mladenović, Sasa M.
AU  - Sijacki-Zeravcić, Vera M.
AU  - Bakić, Gordana M.
AU  - Lozanović-Sajić, Jasmina
AU  - Rakin, Marko
AU  - Đurđević, Andrijana
AU  - Đukić, Miloš B.
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2680
AB  - Stress calculation of steam pipeline is presented, focused on the welded joint. Numerical calculation was peiformed using the finite element method to obtain stress distribution in the welded joint made while replacing the valve chamber. Dissimilar materials were used, namely steel 10CrMoV9-10 according to EN 10216-2 for the valve chamber, the rest of steam pipeline was steel X20, whereas the transition piece material was steel X22. Residual stresses were calculated, in addition to design stresses, indicating critical regions and necessity for post-weld heat treatment.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Numerical analysis of thermal stresses in welded joint made of steels x20 and x22
EP  - S126
SP  - S121
VL  - 18
DO  - 10.2298/TSCI131211178M
ER  - 

@article{
author = "Mladenović, Sasa M. and Sijacki-Zeravcić, Vera M. and Bakić, Gordana M. and Lozanović-Sajić, Jasmina and Rakin, Marko and Đurđević, Andrijana and Đukić, Miloš B.",
year = "2014",
abstract = "Stress calculation of steam pipeline is presented, focused on the welded joint. Numerical calculation was peiformed using the finite element method to obtain stress distribution in the welded joint made while replacing the valve chamber. Dissimilar materials were used, namely steel 10CrMoV9-10 according to EN 10216-2 for the valve chamber, the rest of steam pipeline was steel X20, whereas the transition piece material was steel X22. Residual stresses were calculated, in addition to design stresses, indicating critical regions and necessity for post-weld heat treatment.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Numerical analysis of thermal stresses in welded joint made of steels x20 and x22",
pages = "S126-S121",
volume = "18",
doi = "10.2298/TSCI131211178M"
}

Mladenović, S. M., Sijacki-Zeravcić, V. M., Bakić, G. M., Lozanović-Sajić, J., Rakin, M., Đurđević, A.,& Đukić, M. B.. (2014). Numerical analysis of thermal stresses in welded joint made of steels x20 and x22. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 18, S121-S126.
https://doi.org/10.2298/TSCI131211178M

Mladenović SM, Sijacki-Zeravcić VM, Bakić GM, Lozanović-Sajić J, Rakin M, Đurđević A, Đukić MB. Numerical analysis of thermal stresses in welded joint made of steels x20 and x22. in Thermal Science. 2014;18:S121-S126.
doi:10.2298/TSCI131211178M .

Mladenović, Sasa M., Sijacki-Zeravcić, Vera M., Bakić, Gordana M., Lozanović-Sajić, Jasmina, Rakin, Marko, Đurđević, Andrijana, Đukić, Miloš B., "Numerical analysis of thermal stresses in welded joint made of steels x20 and x22" in Thermal Science, 18 (2014):S121-S126,
https://doi.org/10.2298/TSCI131211178M . .