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 . .