TY  - JOUR
AU  - Milovanović, Dubravka
AU  - Rajčić, Boris
AU  - Ranković, Dragan
AU  - Stankov, Biljana
AU  - Čekada, Miha
AU  - Ciganović, Jovan
AU  - Đurđević-Milošević, Dragica
AU  - Stević, Zoran
AU  - Kuzmanović, Miroslav
AU  - Šibalija, Tatjana
AU  - Petronić, Sanja
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12723
AB  - This paper presents a study and comparison of surface effects induced by picosecond and nanosecond laser modification of a Ti6Al4V alloy surface under different ambient conditions: air and argon- and nitrogen-rich atmospheres. Detailed surface characterization was performed for all experimental conditions. Damage threshold fluences for picosecond and nanosecond laser irradiation in all three ambient conditions were determined. The observed surface features were a resolidified pool of molten material, craters, hydrodynamic effects and parallel periodic surface structures. Laser-induced periodic surface structures are formed by multi-mode-beam nanosecond laser action and picosecond laser action. Crown-like structures at crater rims are specific features for picosecond Nd:YAG laser action in argon-rich ambient conditions. Elemental analysis of the surfaces indicated nitride compound formation only in the nitrogen-rich ambient conditions. The constituents of the formed plasma were also investigated. Exploring the impact of process control parameters on output responses has been undertaken within the context of laser modification under different environmental conditions. Parametric optimization of the nanosecond laser modification was carried out by implementing an advanced method based on Taguchi’s parametric design and multivariate statistical techniques, and optimal settings are proposed for each atmosphere.
T2  - Micromachines
T1  - Microstructure Formations Resulting from Nanosecond and Picosecond Laser Irradiation of a Ti-Based Alloy under Controlled Atmospheric Conditions and Optimization of the Irradiation Process
VL  - 15
IS  - 1
SP  - 5
DO  - 10.3390/mi15010005
ER  - 

@article{
author = "Milovanović, Dubravka and Rajčić, Boris and Ranković, Dragan and Stankov, Biljana and Čekada, Miha and Ciganović, Jovan and Đurđević-Milošević, Dragica and Stević, Zoran and Kuzmanović, Miroslav and Šibalija, Tatjana and Petronić, Sanja",
year = "2024",
abstract = "This paper presents a study and comparison of surface effects induced by picosecond and nanosecond laser modification of a Ti6Al4V alloy surface under different ambient conditions: air and argon- and nitrogen-rich atmospheres. Detailed surface characterization was performed for all experimental conditions. Damage threshold fluences for picosecond and nanosecond laser irradiation in all three ambient conditions were determined. The observed surface features were a resolidified pool of molten material, craters, hydrodynamic effects and parallel periodic surface structures. Laser-induced periodic surface structures are formed by multi-mode-beam nanosecond laser action and picosecond laser action. Crown-like structures at crater rims are specific features for picosecond Nd:YAG laser action in argon-rich ambient conditions. Elemental analysis of the surfaces indicated nitride compound formation only in the nitrogen-rich ambient conditions. The constituents of the formed plasma were also investigated. Exploring the impact of process control parameters on output responses has been undertaken within the context of laser modification under different environmental conditions. Parametric optimization of the nanosecond laser modification was carried out by implementing an advanced method based on Taguchi’s parametric design and multivariate statistical techniques, and optimal settings are proposed for each atmosphere.",
journal = "Micromachines",
title = "Microstructure Formations Resulting from Nanosecond and Picosecond Laser Irradiation of a Ti-Based Alloy under Controlled Atmospheric Conditions and Optimization of the Irradiation Process",
volume = "15",
number = "1",
pages = "5",
doi = "10.3390/mi15010005"
}

Milovanović, D., Rajčić, B., Ranković, D., Stankov, B., Čekada, M., Ciganović, J., Đurđević-Milošević, D., Stević, Z., Kuzmanović, M., Šibalija, T.,& Petronić, S.. (2024). Microstructure Formations Resulting from Nanosecond and Picosecond Laser Irradiation of a Ti-Based Alloy under Controlled Atmospheric Conditions and Optimization of the Irradiation Process. in Micromachines, 15(1), 5.
https://doi.org/10.3390/mi15010005

Milovanović D, Rajčić B, Ranković D, Stankov B, Čekada M, Ciganović J, Đurđević-Milošević D, Stević Z, Kuzmanović M, Šibalija T, Petronić S. Microstructure Formations Resulting from Nanosecond and Picosecond Laser Irradiation of a Ti-Based Alloy under Controlled Atmospheric Conditions and Optimization of the Irradiation Process. in Micromachines. 2024;15(1):5.
doi:10.3390/mi15010005 .

Milovanović, Dubravka, Rajčić, Boris, Ranković, Dragan, Stankov, Biljana, Čekada, Miha, Ciganović, Jovan, Đurđević-Milošević, Dragica, Stević, Zoran, Kuzmanović, Miroslav, Šibalija, Tatjana, Petronić, Sanja, "Microstructure Formations Resulting from Nanosecond and Picosecond Laser Irradiation of a Ti-Based Alloy under Controlled Atmospheric Conditions and Optimization of the Irradiation Process" in Micromachines, 15, no. 1 (2024):5,
https://doi.org/10.3390/mi15010005 . .

TY  - JOUR
AU  - Rajčić, Boris
AU  - Šibalija, Tatjana
AU  - Nikolić, Vladimir M.
AU  - Čekada, Miha
AU  - Savović, Jelena
AU  - Petronić, Sanja
AU  - Milovanović, Dubravka
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10659
AB  - In this experimental study, picosecond laser treatment was performed on a nickel-based superalloy Nimonic 263, aiming to investigate the surface effects induced by irradiation in different atmospheric conditions and, concerning changes in surface composition, regarding the possibility for improvement of its functionality. Besides the varying laser parameters, such as a number of pulses and pulse energy, environmental conditions are also varied. All surface modifications were carried out in standard laboratory conditions and a nitrogen- and argon-rich atmosphere. The resulting topography effects depend on the specific laser treatment and could be categorized as increased roughness, crater formation, and formation of the laser-induced periodic surface structures (LIPSS). Changes in the chemical surface composition are distinguished as the potential formation of the protective oxides/nitrides on the sample surface. Numerous characterization techniques analyse the resulting effects on the topography and surface parameters. The multi-response parametric optimization of the picosecond laser process was performed using an advanced statistical method based on Taguchi’s robust parameter design. Finally, the optimal parameter conditions for Nimonic 263 modification are suggested.
T2  - Materials
T1  - Structural and Functional Picosecond Laser Modification of the Nimonic 263 Superalloy in Different Environmental Conditions and Optimization of the Irradiation Process
VL  - 16
IS  - 3
SP  - 1021
DO  - 10.3390/ma16031021
ER  - 

@article{
author = "Rajčić, Boris and Šibalija, Tatjana and Nikolić, Vladimir M. and Čekada, Miha and Savović, Jelena and Petronić, Sanja and Milovanović, Dubravka",
year = "2023",
abstract = "In this experimental study, picosecond laser treatment was performed on a nickel-based superalloy Nimonic 263, aiming to investigate the surface effects induced by irradiation in different atmospheric conditions and, concerning changes in surface composition, regarding the possibility for improvement of its functionality. Besides the varying laser parameters, such as a number of pulses and pulse energy, environmental conditions are also varied. All surface modifications were carried out in standard laboratory conditions and a nitrogen- and argon-rich atmosphere. The resulting topography effects depend on the specific laser treatment and could be categorized as increased roughness, crater formation, and formation of the laser-induced periodic surface structures (LIPSS). Changes in the chemical surface composition are distinguished as the potential formation of the protective oxides/nitrides on the sample surface. Numerous characterization techniques analyse the resulting effects on the topography and surface parameters. The multi-response parametric optimization of the picosecond laser process was performed using an advanced statistical method based on Taguchi’s robust parameter design. Finally, the optimal parameter conditions for Nimonic 263 modification are suggested.",
journal = "Materials",
title = "Structural and Functional Picosecond Laser Modification of the Nimonic 263 Superalloy in Different Environmental Conditions and Optimization of the Irradiation Process",
volume = "16",
number = "3",
pages = "1021",
doi = "10.3390/ma16031021"
}

Rajčić, B., Šibalija, T., Nikolić, V. M., Čekada, M., Savović, J., Petronić, S.,& Milovanović, D.. (2023). Structural and Functional Picosecond Laser Modification of the Nimonic 263 Superalloy in Different Environmental Conditions and Optimization of the Irradiation Process. in Materials, 16(3), 1021.
https://doi.org/10.3390/ma16031021

Rajčić B, Šibalija T, Nikolić VM, Čekada M, Savović J, Petronić S, Milovanović D. Structural and Functional Picosecond Laser Modification of the Nimonic 263 Superalloy in Different Environmental Conditions and Optimization of the Irradiation Process. in Materials. 2023;16(3):1021.
doi:10.3390/ma16031021 .

Rajčić, Boris, Šibalija, Tatjana, Nikolić, Vladimir M., Čekada, Miha, Savović, Jelena, Petronić, Sanja, Milovanović, Dubravka, "Structural and Functional Picosecond Laser Modification of the Nimonic 263 Superalloy in Different Environmental Conditions and Optimization of the Irradiation Process" in Materials, 16, no. 3 (2023):1021,
https://doi.org/10.3390/ma16031021 . .

TY  - JOUR
AU  - Milovanović, Dubravka S.
AU  - Rajčić, Boris
AU  - Petronić, Sanja
AU  - Radulović, Aleksandra
AU  - Radak, Bojan
AU  - Gaković, Biljana M.
AU  - Zamfirescu, Marian
AU  - Albu, Catalina
AU  - Savović, Jelena
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10116
AB  - The surface of a titanium-based alloy Ti6Al4V was subjected to modifications by a near-IR femtosecond Ti:Sapphire laser, emitting at 775 nm pulses of 200 fs duration, in single-pulse and multi-pulse regimes, with up to 400 accumulated pulses, and pulse energies ranging from 2.5 to 250 $$\upmu $$J. The whole range of induced effects is presented, from gentle ablation and pattern occurrence to substantial crater formation. Very observable laser-induced parallel periodic surface structures are reported, appearing both within the damage spot area, with low fluences, and at the peripheries of the craters, with higher fluences—but also on crater walls, and inside the crater structures. Damage threshold fluences $$({F}_{\mathrm{th}})$$and the incubation factor $$(\zeta )$$were also determined.
T2  - European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics
T1  - Comprehensive ablation study of near-IR femtosecond laser action on the titanium-based alloy Ti6Al4V: morphological effects and surface structures at low and high fluences
VL  - 76
IS  - 1
SP  - 2
DO  - 10.1140/epjd/s10053-021-00308-z
ER  - 

@article{
author = "Milovanović, Dubravka S. and Rajčić, Boris and Petronić, Sanja and Radulović, Aleksandra and Radak, Bojan and Gaković, Biljana M. and Zamfirescu, Marian and Albu, Catalina and Savović, Jelena",
year = "2022",
abstract = "The surface of a titanium-based alloy Ti6Al4V was subjected to modifications by a near-IR femtosecond Ti:Sapphire laser, emitting at 775 nm pulses of 200 fs duration, in single-pulse and multi-pulse regimes, with up to 400 accumulated pulses, and pulse energies ranging from 2.5 to 250 $$\upmu $$J. The whole range of induced effects is presented, from gentle ablation and pattern occurrence to substantial crater formation. Very observable laser-induced parallel periodic surface structures are reported, appearing both within the damage spot area, with low fluences, and at the peripheries of the craters, with higher fluences—but also on crater walls, and inside the crater structures. Damage threshold fluences $$({F}_{\mathrm{th}})$$and the incubation factor $$(\zeta )$$were also determined.",
journal = "European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics",
title = "Comprehensive ablation study of near-IR femtosecond laser action on the titanium-based alloy Ti6Al4V: morphological effects and surface structures at low and high fluences",
volume = "76",
number = "1",
pages = "2",
doi = "10.1140/epjd/s10053-021-00308-z"
}

Milovanović, D. S., Rajčić, B., Petronić, S., Radulović, A., Radak, B., Gaković, B. M., Zamfirescu, M., Albu, C.,& Savović, J.. (2022). Comprehensive ablation study of near-IR femtosecond laser action on the titanium-based alloy Ti6Al4V: morphological effects and surface structures at low and high fluences. in European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics, 76(1), 2.
https://doi.org/10.1140/epjd/s10053-021-00308-z

Milovanović DS, Rajčić B, Petronić S, Radulović A, Radak B, Gaković BM, Zamfirescu M, Albu C, Savović J. Comprehensive ablation study of near-IR femtosecond laser action on the titanium-based alloy Ti6Al4V: morphological effects and surface structures at low and high fluences. in European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics. 2022;76(1):2.
doi:10.1140/epjd/s10053-021-00308-z .

Milovanović, Dubravka S., Rajčić, Boris, Petronić, Sanja, Radulović, Aleksandra, Radak, Bojan, Gaković, Biljana M., Zamfirescu, Marian, Albu, Catalina, Savović, Jelena, "Comprehensive ablation study of near-IR femtosecond laser action on the titanium-based alloy Ti6Al4V: morphological effects and surface structures at low and high fluences" in European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics, 76, no. 1 (2022):2,
https://doi.org/10.1140/epjd/s10053-021-00308-z . .

TY  - CONF
AU  - Vašalić, Dragan
AU  - Lazović, Ivan
AU  - Petronić, Sanja
AU  - Masoničić, Zoran
AU  - Tasić, Viša
PY  - 2018
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10492
AB  - Road transport is the significant and inevitable part of the modern society. Its accelerated expansion is recognized as one of the causes for the increased air pollutant emissions (CO, NOx, NMVOC, PM2.5, and CO2). Therefore, the priorities of the future development of heavy-duty vehicles and their equipment are the reduction of the fuel consumption and reduction of the exhaust gases emissions. In this paper, the monitored emissions of heavy-duty vehicles of various technologies, that use diesel as fuel, have been analyzed by using the COPERT program. The analysis shows that Euro 5 vehicles emit 29% less harmful substances compared with Euro 3 vehicles.
C3  - IOC 2018 : 50th International October Conference on Mining and Metallurgy : Proceedings; September 30th - October 3rd, 2018; Bor
T1  - Ecological and economic aspects of diesel fuel use in the road transport by heavy-duty vehicles in Serbia
SP  - 393
EP  - 399
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10492
ER  - 

@conference{
author = "Vašalić, Dragan and Lazović, Ivan and Petronić, Sanja and Masoničić, Zoran and Tasić, Viša",
year = "2018, 2018",
abstract = "Road transport is the significant and inevitable part of the modern society. Its accelerated expansion is recognized as one of the causes for the increased air pollutant emissions (CO, NOx, NMVOC, PM2.5, and CO2). Therefore, the priorities of the future development of heavy-duty vehicles and their equipment are the reduction of the fuel consumption and reduction of the exhaust gases emissions. In this paper, the monitored emissions of heavy-duty vehicles of various technologies, that use diesel as fuel, have been analyzed by using the COPERT program. The analysis shows that Euro 5 vehicles emit 29% less harmful substances compared with Euro 3 vehicles.",
journal = "IOC 2018 : 50th International October Conference on Mining and Metallurgy : Proceedings; September 30th - October 3rd, 2018; Bor",
title = "Ecological and economic aspects of diesel fuel use in the road transport by heavy-duty vehicles in Serbia",
pages = "393-399",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10492"
}

Vašalić, D., Lazović, I., Petronić, S., Masoničić, Z.,& Tasić, V.. (2018). Ecological and economic aspects of diesel fuel use in the road transport by heavy-duty vehicles in Serbia. in IOC 2018 : 50th International October Conference on Mining and Metallurgy : Proceedings; September 30th - October 3rd, 2018; Bor, 393-399.
https://hdl.handle.net/21.15107/rcub_vinar_10492

Vašalić D, Lazović I, Petronić S, Masoničić Z, Tasić V. Ecological and economic aspects of diesel fuel use in the road transport by heavy-duty vehicles in Serbia. in IOC 2018 : 50th International October Conference on Mining and Metallurgy : Proceedings; September 30th - October 3rd, 2018; Bor. 2018;:393-399.
https://hdl.handle.net/21.15107/rcub_vinar_10492 .

Vašalić, Dragan, Lazović, Ivan, Petronić, Sanja, Masoničić, Zoran, Tasić, Viša, "Ecological and economic aspects of diesel fuel use in the road transport by heavy-duty vehicles in Serbia" in IOC 2018 : 50th International October Conference on Mining and Metallurgy : Proceedings; September 30th - October 3rd, 2018; Bor (2018):393-399,
https://hdl.handle.net/21.15107/rcub_vinar_10492 .

TY  - CONF
AU  - Birdeanu, Aurel Valentin
AU  - Vaida, Mirela
AU  - Perianu, Ion Aurel
AU  - Milovanović, Dubravka S.
AU  - Petronić, Sanja Z.
AU  - Birdeanu, Mihaela
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7851
AB  - Hydrothermally obtained Mg3Ta208 pseudo-binary nanomaterial from MgO and Ta2O5 (3:1) precursors was deposited using the pulsed laser deposition (PLD) technique on carbon steel disks. The PLD main processes parameters, i.e. the pulse energy and the deposition time were varied in order to determine the combination that ensures the best corrosion inhibition. Morphological investigations were carried out (scanning electron microscopy and atomic force microscopy). The anticorrosive properties of the deposited layers were studied in 0.3 M NaCI saline solution. The best anticorrosive protection was observed in the case of the deposited layers on carbon steel disk using the lower energy, i.e. 10mJ for a deposition time of 60s, i.e. 61.94 % inhibition efficiency.
C3  - NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application
T1  - Corrosion behaviour of Mg3Ta2O8 pseudo-binary oxide deposition by pulsed laser deposition on carbon steel disks
VL  - 2017-October
SP  - 366
EP  - 371
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7851
ER  - 

@conference{
author = "Birdeanu, Aurel Valentin and Vaida, Mirela and Perianu, Ion Aurel and Milovanović, Dubravka S. and Petronić, Sanja Z. and Birdeanu, Mihaela",
year = "2018",
abstract = "Hydrothermally obtained Mg3Ta208 pseudo-binary nanomaterial from MgO and Ta2O5 (3:1) precursors was deposited using the pulsed laser deposition (PLD) technique on carbon steel disks. The PLD main processes parameters, i.e. the pulse energy and the deposition time were varied in order to determine the combination that ensures the best corrosion inhibition. Morphological investigations were carried out (scanning electron microscopy and atomic force microscopy). The anticorrosive properties of the deposited layers were studied in 0.3 M NaCI saline solution. The best anticorrosive protection was observed in the case of the deposited layers on carbon steel disk using the lower energy, i.e. 10mJ for a deposition time of 60s, i.e. 61.94 % inhibition efficiency.",
journal = "NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application",
title = "Corrosion behaviour of Mg3Ta2O8 pseudo-binary oxide deposition by pulsed laser deposition on carbon steel disks",
volume = "2017-October",
pages = "366-371",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7851"
}

Birdeanu, A. V., Vaida, M., Perianu, I. A., Milovanović, D. S., Petronić, S. Z.,& Birdeanu, M.. (2018). Corrosion behaviour of Mg3Ta2O8 pseudo-binary oxide deposition by pulsed laser deposition on carbon steel disks. in NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application, 2017-October, 366-371.
https://hdl.handle.net/21.15107/rcub_vinar_7851

Birdeanu AV, Vaida M, Perianu IA, Milovanović DS, Petronić SZ, Birdeanu M. Corrosion behaviour of Mg3Ta2O8 pseudo-binary oxide deposition by pulsed laser deposition on carbon steel disks. in NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application. 2018;2017-October:366-371.
https://hdl.handle.net/21.15107/rcub_vinar_7851 .

Birdeanu, Aurel Valentin, Vaida, Mirela, Perianu, Ion Aurel, Milovanović, Dubravka S., Petronić, Sanja Z., Birdeanu, Mihaela, "Corrosion behaviour of Mg3Ta2O8 pseudo-binary oxide deposition by pulsed laser deposition on carbon steel disks" in NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application, 2017-October (2018):366-371,
https://hdl.handle.net/21.15107/rcub_vinar_7851 .

TY  - JOUR
AU  - Petronić, Sanja
AU  - Jovičić, Radomir
AU  - Sedmak, Aleksandar
AU  - Petrović, Aleksandar
AU  - Birdeanu, Aurel Valentin
AU  - Vašalić, Dragan
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10491
AB  - Inspekcija cevovoda u eksploataciji i analiza uzroka otkaza
T2  - Procesna tehnika
T1  - Inspekcija cevovoda u eksploataciji i analiza uzroka otkaza
VL  - 30
IS  - 1
SP  - 32
EP  - 39
DO  - 10.24094/ptc.018.30.1.32
ER  - 

@article{
author = "Petronić, Sanja and Jovičić, Radomir and Sedmak, Aleksandar and Petrović, Aleksandar and Birdeanu, Aurel Valentin and Vašalić, Dragan",
year = "2018",
abstract = "Inspekcija cevovoda u eksploataciji i analiza uzroka otkaza",
journal = "Procesna tehnika",
title = "Inspekcija cevovoda u eksploataciji i analiza uzroka otkaza",
volume = "30",
number = "1",
pages = "32-39",
doi = "10.24094/ptc.018.30.1.32"
}

Petronić, S., Jovičić, R., Sedmak, A., Petrović, A., Birdeanu, A. V.,& Vašalić, D.. (2018). Inspekcija cevovoda u eksploataciji i analiza uzroka otkaza. in Procesna tehnika, 30(1), 32-39.
https://doi.org/10.24094/ptc.018.30.1.32

Petronić S, Jovičić R, Sedmak A, Petrović A, Birdeanu AV, Vašalić D. Inspekcija cevovoda u eksploataciji i analiza uzroka otkaza. in Procesna tehnika. 2018;30(1):32-39.
doi:10.24094/ptc.018.30.1.32 .

Petronić, Sanja, Jovičić, Radomir, Sedmak, Aleksandar, Petrović, Aleksandar, Birdeanu, Aurel Valentin, Vašalić, Dragan, "Inspekcija cevovoda u eksploataciji i analiza uzroka otkaza" in Procesna tehnika, 30, no. 1 (2018):32-39,
https://doi.org/10.24094/ptc.018.30.1.32 . .

TY  - JOUR
AU  - Petronić, Sanja Z.
AU  - Birdeanu, Aurel Valentin
AU  - Jovičić, Radomir D.
AU  - Čolić, Katarina
AU  - Vašalić, Dragan
AU  - Erić-Cekić, Olivera
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7846
AB  - The Pressure Equipment Directive (PED) and Regulations on Technical Requirements for Designing, Manufacturing and Conformity Assessment of Pressure Equipment bring a number of changes to the design of pressure equipment in relation to the Technical Regulations for Stable Pressure Vessels, 1983. Among the most important changes are the essential safety requirements for pressure equipment. The changes in the formula, for all materials, for calculating the allowable stresses, as well as the change in the value of the test pressure, the new Regulations use the 1.0% proof strength as the relevant value for calculating the permissible membrane stress and thickness of pressure equipment walls. In this paper, the differences in the allowable stresses, the required wall thicknesses, and the approximate savings in the material in the case of a milk reservoir, calculated according to the requirements of the Directive and the new Regulations on one hand, and the old Regulations on the other, are presented. © 2018 The Author.
T2  - Structural Integrity and Life
T1  - Impact of austenitic steels’ mechanical properties on allowed stress and wall thickness of pressure equipment
VL  - 18
IS  - 1
SP  - 45
EP  - 51
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7846
ER  - 

@article{
author = "Petronić, Sanja Z. and Birdeanu, Aurel Valentin and Jovičić, Radomir D. and Čolić, Katarina and Vašalić, Dragan and Erić-Cekić, Olivera",
year = "2018",
abstract = "The Pressure Equipment Directive (PED) and Regulations on Technical Requirements for Designing, Manufacturing and Conformity Assessment of Pressure Equipment bring a number of changes to the design of pressure equipment in relation to the Technical Regulations for Stable Pressure Vessels, 1983. Among the most important changes are the essential safety requirements for pressure equipment. The changes in the formula, for all materials, for calculating the allowable stresses, as well as the change in the value of the test pressure, the new Regulations use the 1.0% proof strength as the relevant value for calculating the permissible membrane stress and thickness of pressure equipment walls. In this paper, the differences in the allowable stresses, the required wall thicknesses, and the approximate savings in the material in the case of a milk reservoir, calculated according to the requirements of the Directive and the new Regulations on one hand, and the old Regulations on the other, are presented. © 2018 The Author.",
journal = "Structural Integrity and Life",
title = "Impact of austenitic steels’ mechanical properties on allowed stress and wall thickness of pressure equipment",
volume = "18",
number = "1",
pages = "45-51",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7846"
}

Petronić, S. Z., Birdeanu, A. V., Jovičić, R. D., Čolić, K., Vašalić, D.,& Erić-Cekić, O.. (2018). Impact of austenitic steels’ mechanical properties on allowed stress and wall thickness of pressure equipment. in Structural Integrity and Life, 18(1), 45-51.
https://hdl.handle.net/21.15107/rcub_vinar_7846

Petronić SZ, Birdeanu AV, Jovičić RD, Čolić K, Vašalić D, Erić-Cekić O. Impact of austenitic steels’ mechanical properties on allowed stress and wall thickness of pressure equipment. in Structural Integrity and Life. 2018;18(1):45-51.
https://hdl.handle.net/21.15107/rcub_vinar_7846 .

Petronić, Sanja Z., Birdeanu, Aurel Valentin, Jovičić, Radomir D., Čolić, Katarina, Vašalić, Dragan, Erić-Cekić, Olivera, "Impact of austenitic steels’ mechanical properties on allowed stress and wall thickness of pressure equipment" in Structural Integrity and Life, 18, no. 1 (2018):45-51,
https://hdl.handle.net/21.15107/rcub_vinar_7846 .

TY  - JOUR
AU  - Petronić, Sanja Z.
AU  - Sibalija, Tatjana
AU  - Burzić, Meri
AU  - Polić, Suzana
AU  - Čolić, Katarina
AU  - Milovanović, Dubravka S.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1001
AB  - The paper presents a study on the surface modifications of nickel based superalloy Nimonic 263 induced by laser shock peening (LSP) process. The process was performed by Nd3+:Yttrium Aluminium Garnet (YAG) picosecond laser using the following parameters: pulse duration 170 ps; repetition rate 10 Hz; pulse numbers of 50, 100 and 200; and wavelength of 1064 nm (with pulse energy of 2 mJ, 10 mJ and 15 mJ) and 532 nm (with pulse energy of 25 mJ, 30 mJ and 35 mJ). The following response characteristics were analyzed: modified surface areas obtained by the laser/material interaction were observed by scanning electron microscopy; elemental composition of the modified surface was evaluated by energy-dispersive spectroscopy (EDS); and Vickers microhardness tests were performed. LSP processing at both 1064 nm and 532 nm wavelengths improved the surface structure and microhardness of a material. Surface morphology changes of the irradiated samples were determined and surface roughness was calculated. These investigations are intended to contribute to the study on the level of microstructure and mechanical properties improvements due to LSP process that operate in a picosecond regime. In particular, the effects of laser wavelength on the microstructural and mechanical changes of a material are studied in detail.
PB  - MDPI
T2  - Metals
T1  - Picosecond Laser Shock Peening of Nimonic 263 at 1064 nm and 532 nm Wavelength
VL  - 6
IS  - 3
DO  - 10.3390/met6030041
ER  - 

@article{
author = "Petronić, Sanja Z. and Sibalija, Tatjana and Burzić, Meri and Polić, Suzana and Čolić, Katarina and Milovanović, Dubravka S.",
year = "2016",
abstract = "The paper presents a study on the surface modifications of nickel based superalloy Nimonic 263 induced by laser shock peening (LSP) process. The process was performed by Nd3+:Yttrium Aluminium Garnet (YAG) picosecond laser using the following parameters: pulse duration 170 ps; repetition rate 10 Hz; pulse numbers of 50, 100 and 200; and wavelength of 1064 nm (with pulse energy of 2 mJ, 10 mJ and 15 mJ) and 532 nm (with pulse energy of 25 mJ, 30 mJ and 35 mJ). The following response characteristics were analyzed: modified surface areas obtained by the laser/material interaction were observed by scanning electron microscopy; elemental composition of the modified surface was evaluated by energy-dispersive spectroscopy (EDS); and Vickers microhardness tests were performed. LSP processing at both 1064 nm and 532 nm wavelengths improved the surface structure and microhardness of a material. Surface morphology changes of the irradiated samples were determined and surface roughness was calculated. These investigations are intended to contribute to the study on the level of microstructure and mechanical properties improvements due to LSP process that operate in a picosecond regime. In particular, the effects of laser wavelength on the microstructural and mechanical changes of a material are studied in detail.",
publisher = "MDPI",
journal = "Metals",
title = "Picosecond Laser Shock Peening of Nimonic 263 at 1064 nm and 532 nm Wavelength",
volume = "6",
number = "3",
doi = "10.3390/met6030041"
}

Petronić, S. Z., Sibalija, T., Burzić, M., Polić, S., Čolić, K.,& Milovanović, D. S.. (2016). Picosecond Laser Shock Peening of Nimonic 263 at 1064 nm and 532 nm Wavelength. in Metals
MDPI., 6(3).
https://doi.org/10.3390/met6030041

Petronić SZ, Sibalija T, Burzić M, Polić S, Čolić K, Milovanović DS. Picosecond Laser Shock Peening of Nimonic 263 at 1064 nm and 532 nm Wavelength. in Metals. 2016;6(3).
doi:10.3390/met6030041 .

Petronić, Sanja Z., Sibalija, Tatjana, Burzić, Meri, Polić, Suzana, Čolić, Katarina, Milovanović, Dubravka S., "Picosecond Laser Shock Peening of Nimonic 263 at 1064 nm and 532 nm Wavelength" in Metals, 6, no. 3 (2016),
https://doi.org/10.3390/met6030041 . .

TY  - JOUR
AU  - Petronić, Sanja Z.
AU  - Milovanović, Dubravka S.
AU  - Milosavljević, Anđelka
AU  - Momčilović, Miloš
AU  - Petrusko, D.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6954
AB  - The investigation presented in this paper was carried out on the nickel-based superalloy, Nimonic 263, a material widely used at elevated temperatures and pressures. The samples were exposed to a Nd3+:YAG pulsed laser, at a wavelength of 1064 nm and a pulse duration of 170 ps, and the estimated threshold damage was 2 mJ. Different pulse energies and numbers of pulses were applied in air and helium-enriched atmospheres. Spots obtained by the laser interaction with the material were observed by optical and scanning electron microscopes and analyzed by energy-dispersive spectroscopy. Vickers microhardness tests were performed. In this paper, the changes that had occurred at the sample surface microstructure as a result of laser-material interaction are discussed with the aim of contributing to the determination of optimal laser parameters in the laser surface treatment process.
T2  - Physica Scripta
T1  - Influence of picosecond laser irradiation on nickel-based superalloy surface microstructure
VL  - T149
DO  - 10.1088/0031-8949/2012/T149/014079
ER  - 

@article{
author = "Petronić, Sanja Z. and Milovanović, Dubravka S. and Milosavljević, Anđelka and Momčilović, Miloš and Petrusko, D.",
year = "2012",
abstract = "The investigation presented in this paper was carried out on the nickel-based superalloy, Nimonic 263, a material widely used at elevated temperatures and pressures. The samples were exposed to a Nd3+:YAG pulsed laser, at a wavelength of 1064 nm and a pulse duration of 170 ps, and the estimated threshold damage was 2 mJ. Different pulse energies and numbers of pulses were applied in air and helium-enriched atmospheres. Spots obtained by the laser interaction with the material were observed by optical and scanning electron microscopes and analyzed by energy-dispersive spectroscopy. Vickers microhardness tests were performed. In this paper, the changes that had occurred at the sample surface microstructure as a result of laser-material interaction are discussed with the aim of contributing to the determination of optimal laser parameters in the laser surface treatment process.",
journal = "Physica Scripta",
title = "Influence of picosecond laser irradiation on nickel-based superalloy surface microstructure",
volume = "T149",
doi = "10.1088/0031-8949/2012/T149/014079"
}

Petronić, S. Z., Milovanović, D. S., Milosavljević, A., Momčilović, M.,& Petrusko, D.. (2012). Influence of picosecond laser irradiation on nickel-based superalloy surface microstructure. in Physica Scripta, T149.
https://doi.org/10.1088/0031-8949/2012/T149/014079

Petronić SZ, Milovanović DS, Milosavljević A, Momčilović M, Petrusko D. Influence of picosecond laser irradiation on nickel-based superalloy surface microstructure. in Physica Scripta. 2012;T149.
doi:10.1088/0031-8949/2012/T149/014079 .

Petronić, Sanja Z., Milovanović, Dubravka S., Milosavljević, Anđelka, Momčilović, Miloš, Petrusko, D., "Influence of picosecond laser irradiation on nickel-based superalloy surface microstructure" in Physica Scripta, T149 (2012),
https://doi.org/10.1088/0031-8949/2012/T149/014079 . .

TY  - JOUR
AU  - Petronić, Sanja Z.
AU  - Milosavljević, Anđelka
AU  - Milovanović, Dubravka S.
AU  - Momčilović, Miloš
AU  - Radovanović, Željko
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4616
AB  - We investigate samples of austenitic materials - stainless steel and iron-based superalloy - which are widely used at high temperatures and pressures. The samples were exposed to Nd(3+):YAG laser pulses with a wavelength of 1064 nm and a pulse duration of 170 ps. We employ different pulse energies and number of pulses. The spots appearing after the laser irradiation were examined by optical and scanning electron microscopy and analyzed by energy-dispersive spectroscopy. We also perform Vickers microhardness tests. We discuss the microstructure changes caused by different energy and number of pulses in air and in a He-enriched atmosphere with the aim to determine optimum laser parameters in surface-treatment technology.
T2  - Journal of Russian Laser Research
T1  - Influence of Picosecond Laser Pulses on the Microstructure of Austenitic Materials
VL  - 32
IS  - 6
SP  - 564
EP  - 571
DO  - 10.1007/s10946-011-9247-6
ER  - 

@article{
author = "Petronić, Sanja Z. and Milosavljević, Anđelka and Milovanović, Dubravka S. and Momčilović, Miloš and Radovanović, Željko",
year = "2011",
abstract = "We investigate samples of austenitic materials - stainless steel and iron-based superalloy - which are widely used at high temperatures and pressures. The samples were exposed to Nd(3+):YAG laser pulses with a wavelength of 1064 nm and a pulse duration of 170 ps. We employ different pulse energies and number of pulses. The spots appearing after the laser irradiation were examined by optical and scanning electron microscopy and analyzed by energy-dispersive spectroscopy. We also perform Vickers microhardness tests. We discuss the microstructure changes caused by different energy and number of pulses in air and in a He-enriched atmosphere with the aim to determine optimum laser parameters in surface-treatment technology.",
journal = "Journal of Russian Laser Research",
title = "Influence of Picosecond Laser Pulses on the Microstructure of Austenitic Materials",
volume = "32",
number = "6",
pages = "564-571",
doi = "10.1007/s10946-011-9247-6"
}

Petronić, S. Z., Milosavljević, A., Milovanović, D. S., Momčilović, M.,& Radovanović, Ž.. (2011). Influence of Picosecond Laser Pulses on the Microstructure of Austenitic Materials. in Journal of Russian Laser Research, 32(6), 564-571.
https://doi.org/10.1007/s10946-011-9247-6

Petronić SZ, Milosavljević A, Milovanović DS, Momčilović M, Radovanović Ž. Influence of Picosecond Laser Pulses on the Microstructure of Austenitic Materials. in Journal of Russian Laser Research. 2011;32(6):564-571.
doi:10.1007/s10946-011-9247-6 .

Petronić, Sanja Z., Milosavljević, Anđelka, Milovanović, Dubravka S., Momčilović, Miloš, Radovanović, Željko, "Influence of Picosecond Laser Pulses on the Microstructure of Austenitic Materials" in Journal of Russian Laser Research, 32, no. 6 (2011):564-571,
https://doi.org/10.1007/s10946-011-9247-6 . .

TY  - CONF
AU  - Petronić, Sanja Z.
AU  - Milovanović, Dubravka S.
AU  - Milosavljević, Anđelka
AU  - Momčilović, Miloš
AU  - Petrusko, D.
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10971
PB  - Belgrade : Vinča Institute of Nuclear Sciences
C3  - PHOTONICA2011 : 3rd International School and Conference on Photonics : book of abstracts; August 29- September 2, 2011; Belgrade
T1  - Influence of picosecond laser irradiation on nickel base superalloy surface microstructure
SP  - 57
EP  - 58
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10971
ER  - 

@conference{
author = "Petronić, Sanja Z. and Milovanović, Dubravka S. and Milosavljević, Anđelka and Momčilović, Miloš and Petrusko, D.",
year = "2011",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences",
journal = "PHOTONICA2011 : 3rd International School and Conference on Photonics : book of abstracts; August 29- September 2, 2011; Belgrade",
title = "Influence of picosecond laser irradiation on nickel base superalloy surface microstructure",
pages = "57-58",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10971"
}

Petronić, S. Z., Milovanović, D. S., Milosavljević, A., Momčilović, M.,& Petrusko, D.. (2011). Influence of picosecond laser irradiation on nickel base superalloy surface microstructure. in PHOTONICA2011 : 3rd International School and Conference on Photonics : book of abstracts; August 29- September 2, 2011; Belgrade
Belgrade : Vinča Institute of Nuclear Sciences., 57-58.
https://hdl.handle.net/21.15107/rcub_vinar_10971

Petronić SZ, Milovanović DS, Milosavljević A, Momčilović M, Petrusko D. Influence of picosecond laser irradiation on nickel base superalloy surface microstructure. in PHOTONICA2011 : 3rd International School and Conference on Photonics : book of abstracts; August 29- September 2, 2011; Belgrade. 2011;:57-58.
https://hdl.handle.net/21.15107/rcub_vinar_10971 .

Petronić, Sanja Z., Milovanović, Dubravka S., Milosavljević, Anđelka, Momčilović, Miloš, Petrusko, D., "Influence of picosecond laser irradiation on nickel base superalloy surface microstructure" in PHOTONICA2011 : 3rd International School and Conference on Photonics : book of abstracts; August 29- September 2, 2011; Belgrade (2011):57-58,
https://hdl.handle.net/21.15107/rcub_vinar_10971 .

TY  - CONF
AU  - Petronić, Sanja
AU  - Milosavljević, Anđelka
AU  - Milovanović, Dubravka
AU  - Momčilović, Miloš
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13022
PB  - Scientific Society for Mechanical Engineering
C3  - 28th Danubia - Adria - Symposium on Advances in Experimental Mechanics, DAS 2011
T1  - Experimental investigation of laser surface hardening of welded stainless steel 347 sheets
SP  - 77
EP  - 78
UR  - conv_1271
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13022
ER  - 

@conference{
author = "Petronić, Sanja and Milosavljević, Anđelka and Milovanović, Dubravka and Momčilović, Miloš",
year = "2011",
publisher = "Scientific Society for Mechanical Engineering",
journal = "28th Danubia - Adria - Symposium on Advances in Experimental Mechanics, DAS 2011",
title = "Experimental investigation of laser surface hardening of welded stainless steel 347 sheets",
pages = "77-78",
url = "conv_1271, https://hdl.handle.net/21.15107/rcub_vinar_13022"
}

Petronić, S., Milosavljević, A., Milovanović, D.,& Momčilović, M.. (2011). Experimental investigation of laser surface hardening of welded stainless steel 347 sheets. in 28th Danubia - Adria - Symposium on Advances in Experimental Mechanics, DAS 2011
Scientific Society for Mechanical Engineering., 77-78.
conv_1271

Petronić S, Milosavljević A, Milovanović D, Momčilović M. Experimental investigation of laser surface hardening of welded stainless steel 347 sheets. in 28th Danubia - Adria - Symposium on Advances in Experimental Mechanics, DAS 2011. 2011;:77-78.
conv_1271 .

Petronić, Sanja, Milosavljević, Anđelka, Milovanović, Dubravka, Momčilović, Miloš, "Experimental investigation of laser surface hardening of welded stainless steel 347 sheets" in 28th Danubia - Adria - Symposium on Advances in Experimental Mechanics, DAS 2011 (2011):77-78,
conv_1271 .