TY  - JOUR
AU  - Buyukyildirim, G.
AU  - Sedmak, Aleksandar
AU  - Prokić-Cvetković, Radica
AU  - Popović, Olivera
AU  - Jovicić, R.
AU  - Bulatović, Srđan
PY  - 2011
UR  - http://rims.institutims.rs/handle/123456789/144
AB  - The effect of MIG/MAG shielding gas on the toughness of aluminium alloy AlMg4.5Mn weld metal has been analysed using the instrumented Charpy pendulum for standard toughness testing. The MIG/MAG welding was performed in the shielded atmosphere of Ar, as well as the mixtures of gases Ar + 0.0307 % O 2, Ar + 30 % He + 0.0317 %O 2 and Ar + 48 % He + 0.0290 % O 2. Metallographic tests have been performed in order to check the appearance and porosity of the weld metal, as well as its toughness testing at different temperatures (20, - 90, - 196 °C), using the instrumental Charpy pendulum, in order to separate the crack initiation and crack growth energy. In this way, a comprehensive insight of the effect of shielding gas on the weld metal toughness has been obtained.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - The effect of shielding gas on the toughness of ALMg4.5Mn weld metals made by GMAW
EP  - 132
IS  - 3
SP  - 127
VL  - 39
UR  - https://hdl.handle.net/21.15107/rcub_rims_144
ER  - 

@article{
author = "Buyukyildirim, G. and Sedmak, Aleksandar and Prokić-Cvetković, Radica and Popović, Olivera and Jovicić, R. and Bulatović, Srđan",
year = "2011",
abstract = "The effect of MIG/MAG shielding gas on the toughness of aluminium alloy AlMg4.5Mn weld metal has been analysed using the instrumented Charpy pendulum for standard toughness testing. The MIG/MAG welding was performed in the shielded atmosphere of Ar, as well as the mixtures of gases Ar + 0.0307 % O 2, Ar + 30 % He + 0.0317 %O 2 and Ar + 48 % He + 0.0290 % O 2. Metallographic tests have been performed in order to check the appearance and porosity of the weld metal, as well as its toughness testing at different temperatures (20, - 90, - 196 °C), using the instrumental Charpy pendulum, in order to separate the crack initiation and crack growth energy. In this way, a comprehensive insight of the effect of shielding gas on the weld metal toughness has been obtained.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "The effect of shielding gas on the toughness of ALMg4.5Mn weld metals made by GMAW",
pages = "132-127",
number = "3",
volume = "39",
url = "https://hdl.handle.net/21.15107/rcub_rims_144"
}

Buyukyildirim, G., Sedmak, A., Prokić-Cvetković, R., Popović, O., Jovicić, R.,& Bulatović, S.. (2011). The effect of shielding gas on the toughness of ALMg4.5Mn weld metals made by GMAW. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 39(3), 127-132.
https://hdl.handle.net/21.15107/rcub_rims_144

Buyukyildirim G, Sedmak A, Prokić-Cvetković R, Popović O, Jovicić R, Bulatović S. The effect of shielding gas on the toughness of ALMg4.5Mn weld metals made by GMAW. in FME Transactions. 2011;39(3):127-132.
https://hdl.handle.net/21.15107/rcub_rims_144 .

Buyukyildirim, G., Sedmak, Aleksandar, Prokić-Cvetković, Radica, Popović, Olivera, Jovicić, R., Bulatović, Srđan, "The effect of shielding gas on the toughness of ALMg4.5Mn weld metals made by GMAW" in FME Transactions, 39, no. 3 (2011):127-132,
https://hdl.handle.net/21.15107/rcub_rims_144 .

TY  - JOUR
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Sedmak, Aleksandar
AU  - Grabulov, Vencislav
AU  - Burzić, Zijah
AU  - Rakin, Marko
PY  - 2010
UR  - http://rims.institutims.rs/handle/123456789/123
AB  - In this paper microstructural and mechanical properties of high-carbon steel surface welded layer, obtained with self-shielded flux cored wire, are presented in the case of a standard rails and crossings. The testing results of tensile characteristics, hardness, toughness via instrumented Charpy pendulum, microstructural analysis and fatigue crack growth resistance of all characteristical zones are analysed in details, especially from the point of view of interaction between microstructure and properties. Obtained results indicate superior properties of repaired welded layers, due to their similarity to the new generation of bainitic steel, i.e., due to change of microstructure from original pearlitic structure to final bainitic structure. Finally, fatigue crack growth parameters have shown that deposite layer has higher resistance to the crack growth, improving overall reliability of rails and crossings.
T2  - Strojniski Vestnik/Journal of Mechanical Engineering
T1  - Characterisation of high-carbon steel surface welded layer
IS  - 5
VL  - 56
UR  - https://hdl.handle.net/21.15107/rcub_rims_123
ER  - 

@article{
author = "Popović, Olivera and Prokić-Cvetković, Radica and Sedmak, Aleksandar and Grabulov, Vencislav and Burzić, Zijah and Rakin, Marko",
year = "2010",
abstract = "In this paper microstructural and mechanical properties of high-carbon steel surface welded layer, obtained with self-shielded flux cored wire, are presented in the case of a standard rails and crossings. The testing results of tensile characteristics, hardness, toughness via instrumented Charpy pendulum, microstructural analysis and fatigue crack growth resistance of all characteristical zones are analysed in details, especially from the point of view of interaction between microstructure and properties. Obtained results indicate superior properties of repaired welded layers, due to their similarity to the new generation of bainitic steel, i.e., due to change of microstructure from original pearlitic structure to final bainitic structure. Finally, fatigue crack growth parameters have shown that deposite layer has higher resistance to the crack growth, improving overall reliability of rails and crossings.",
journal = "Strojniski Vestnik/Journal of Mechanical Engineering",
title = "Characterisation of high-carbon steel surface welded layer",
number = "5",
volume = "56",
url = "https://hdl.handle.net/21.15107/rcub_rims_123"
}

Popović, O., Prokić-Cvetković, R., Sedmak, A., Grabulov, V., Burzić, Z.,& Rakin, M.. (2010). Characterisation of high-carbon steel surface welded layer. in Strojniski Vestnik/Journal of Mechanical Engineering, 56(5).
https://hdl.handle.net/21.15107/rcub_rims_123

Popović O, Prokić-Cvetković R, Sedmak A, Grabulov V, Burzić Z, Rakin M. Characterisation of high-carbon steel surface welded layer. in Strojniski Vestnik/Journal of Mechanical Engineering. 2010;56(5).
https://hdl.handle.net/21.15107/rcub_rims_123 .

Popović, Olivera, Prokić-Cvetković, Radica, Sedmak, Aleksandar, Grabulov, Vencislav, Burzić, Zijah, Rakin, Marko, "Characterisation of high-carbon steel surface welded layer" in Strojniski Vestnik/Journal of Mechanical Engineering, 56, no. 5 (2010),
https://hdl.handle.net/21.15107/rcub_rims_123 .

TY  - JOUR
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Grabulov, Vencislav
AU  - Odanović, Zoran
PY  - 2006
UR  - http://rims.institutims.rs/handle/123456789/50
AB  - U savremenim uslovima eksploatacije, šine su izložene sve većim brzinama i osovinskim opterećenjima, pa se javljaju i sve veća eksploatacijska oštećenja. Dok je habanje šina značajno smanjeno uvođenjem u upotrebu odgovarajućih čelika i sredstava za podmazivanje, greške nastale usled kontaktnog zamora, tzv. RCF (rolling contact fatigue) greške, postaju sve veći problem na visoko opterećenim prugama. Reparatura oštećenih delova šina postupkom navarivanja je standardna metoda održavanja šina u svetu, a manjim delom kod nas, pa su razvijeni poluautomatski postupci koji su zamenili sporo ručno navarivanje obloženim elektrodama. U radu su prikazani rezultati primene nekih samozaštitnih punjenih žica i punjenih žica za rad u zaštiti CO2 gasa koji se koriste za navarivanje šina. Prikazano je kako vrsta dodatnog materijala utiče na raspodelu tvrdoće kroz presek spoja i makroskopski izgled navara. Dobijeni rezultati predstavljaju dobru osnovu za dalja ispitivanja u cilju određivanja eksploataciskog veka repariranih šina.
AB  - In modern railway exploitation, rails are exposed to a constant increase of speed and axles loads, which are causing increased exploitation damages. While wear has been reduced by introducing appropriate steel and lubricants rolling contact fatigue (RCF) defects have become more prominent on highly busy routes. Reparation of damaged rails by hard facing is standard method of maintenance in the world, but not in our country. Slowly manual processes are replaced by half-automatic welding processes. This paper describes behavior of some self-shielded flux cored wires and gas-shielded flux cored wires which are using for hard facing processes. Influence of the type of filler material on the hardness distribution and macroscopic view of deposit metal is also shown. These results should be used for further testing according to determination of remain life of repaired rails.
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Izbor punjenih žica za navarivanje železničkih šina
T1  - Selection of the flux cored wires for repair welding of the rails
EP  - 139
IS  - 4
SP  - 131
VL  - 51
UR  - https://hdl.handle.net/21.15107/rcub_machinery_625
ER  - 

@article{
author = "Popović, Olivera and Prokić-Cvetković, Radica and Grabulov, Vencislav and Odanović, Zoran",
year = "2006",
abstract = "U savremenim uslovima eksploatacije, šine su izložene sve većim brzinama i osovinskim opterećenjima, pa se javljaju i sve veća eksploatacijska oštećenja. Dok je habanje šina značajno smanjeno uvođenjem u upotrebu odgovarajućih čelika i sredstava za podmazivanje, greške nastale usled kontaktnog zamora, tzv. RCF (rolling contact fatigue) greške, postaju sve veći problem na visoko opterećenim prugama. Reparatura oštećenih delova šina postupkom navarivanja je standardna metoda održavanja šina u svetu, a manjim delom kod nas, pa su razvijeni poluautomatski postupci koji su zamenili sporo ručno navarivanje obloženim elektrodama. U radu su prikazani rezultati primene nekih samozaštitnih punjenih žica i punjenih žica za rad u zaštiti CO2 gasa koji se koriste za navarivanje šina. Prikazano je kako vrsta dodatnog materijala utiče na raspodelu tvrdoće kroz presek spoja i makroskopski izgled navara. Dobijeni rezultati predstavljaju dobru osnovu za dalja ispitivanja u cilju određivanja eksploataciskog veka repariranih šina., In modern railway exploitation, rails are exposed to a constant increase of speed and axles loads, which are causing increased exploitation damages. While wear has been reduced by introducing appropriate steel and lubricants rolling contact fatigue (RCF) defects have become more prominent on highly busy routes. Reparation of damaged rails by hard facing is standard method of maintenance in the world, but not in our country. Slowly manual processes are replaced by half-automatic welding processes. This paper describes behavior of some self-shielded flux cored wires and gas-shielded flux cored wires which are using for hard facing processes. Influence of the type of filler material on the hardness distribution and macroscopic view of deposit metal is also shown. These results should be used for further testing according to determination of remain life of repaired rails.",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Izbor punjenih žica za navarivanje železničkih šina, Selection of the flux cored wires for repair welding of the rails",
pages = "139-131",
number = "4",
volume = "51",
url = "https://hdl.handle.net/21.15107/rcub_machinery_625"
}

Popović, O., Prokić-Cvetković, R., Grabulov, V.,& Odanović, Z.. (2006). Izbor punjenih žica za navarivanje železničkih šina. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 51(4), 131-139.
https://hdl.handle.net/21.15107/rcub_machinery_625

Popović O, Prokić-Cvetković R, Grabulov V, Odanović Z. Izbor punjenih žica za navarivanje železničkih šina. in Zavarivanje i zavarene konstrukcije. 2006;51(4):131-139.
https://hdl.handle.net/21.15107/rcub_machinery_625 .

Popović, Olivera, Prokić-Cvetković, Radica, Grabulov, Vencislav, Odanović, Zoran, "Izbor punjenih žica za navarivanje železničkih šina" in Zavarivanje i zavarene konstrukcije, 51, no. 4 (2006):131-139,
https://hdl.handle.net/21.15107/rcub_machinery_625 .

TY  - JOUR
AU  - Arsić, Miodrag
AU  - Aleksić, Vujadin
AU  - Sedmak, Aleksandar
AU  - Popović, Olivera
PY  - 2000
UR  - http://rims.institutims.rs/handle/123456789/683
AB  - Podaci о trenutnom kvalitetu cevnog sistema su potrebni radi donošenja odluke о daljoj eksploataciji i ukupnoj осепi pouzdanosti kotlovskog postгojenja. U pogledu otkaza kritičпа mesta па cevnim sistemima su zаvareni spojevi, zbog heterogene strukture i značajne promene mehaničkih osobina. U radu je prikazan metodološki pristup analizi stanja cevnog sistema
kotlova, а па ргimеru vrelovodnog kotla VKL-50 opisane su metode ispitivanja kvaliteta zavarenih cevi i izloženi rezultati ispitivanja, što је omogućilo осеnu pouzdanosti zavarenih spojeva u eksploataciji.
T2  - Procesna tehnika
T1  - Ocena pouzdanosti vrelovodnog kotla na bazi analize stanja
EP  - 252
IS  - 2-3
SP  - 248
UR  - https://hdl.handle.net/21.15107/rcub_rims_683
ER  - 

@article{
author = "Arsić, Miodrag and Aleksić, Vujadin and Sedmak, Aleksandar and Popović, Olivera",
year = "2000",
abstract = "Podaci о trenutnom kvalitetu cevnog sistema su potrebni radi donošenja odluke о daljoj eksploataciji i ukupnoj осепi pouzdanosti kotlovskog postгojenja. U pogledu otkaza kritičпа mesta па cevnim sistemima su zаvareni spojevi, zbog heterogene strukture i značajne promene mehaničkih osobina. U radu je prikazan metodološki pristup analizi stanja cevnog sistema
kotlova, а па ргimеru vrelovodnog kotla VKL-50 opisane su metode ispitivanja kvaliteta zavarenih cevi i izloženi rezultati ispitivanja, što је omogućilo осеnu pouzdanosti zavarenih spojeva u eksploataciji.",
journal = "Procesna tehnika",
title = "Ocena pouzdanosti vrelovodnog kotla na bazi analize stanja",
pages = "252-248",
number = "2-3",
url = "https://hdl.handle.net/21.15107/rcub_rims_683"
}

Arsić, M., Aleksić, V., Sedmak, A.,& Popović, O.. (2000). Ocena pouzdanosti vrelovodnog kotla na bazi analize stanja. in Procesna tehnika(2-3), 248-252.
https://hdl.handle.net/21.15107/rcub_rims_683

Arsić M, Aleksić V, Sedmak A, Popović O. Ocena pouzdanosti vrelovodnog kotla na bazi analize stanja. in Procesna tehnika. 2000;(2-3):248-252.
https://hdl.handle.net/21.15107/rcub_rims_683 .

Arsić, Miodrag, Aleksić, Vujadin, Sedmak, Aleksandar, Popović, Olivera, "Ocena pouzdanosti vrelovodnog kotla na bazi analize stanja" in Procesna tehnika, no. 2-3 (2000):248-252,
https://hdl.handle.net/21.15107/rcub_rims_683 .