TY  - JOUR
AU  - Dojčinović, Marina
AU  - Prokić Cvetković, Radica
AU  - Sedmak, Aleksandar
AU  - Popović, Olivera
AU  - Cvetković, Ivana
AU  - Radu, Dorin
PY  - 2023
UR  - https://www.scopus.com/record/display.uri?eid=2-s2.0-85164814751&origin=resultslist
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7768
AB  - The effect of the shielding gas arc welding process on the cavitation resistance of the three-component aluminum alloy AlMg4.5Mn and its welded joints was investigated. Welding was performed using the GTAW and GMAW processes in a shielded atmosphere of pure argon. After the welding, metallographic tests were performed, and the hardness distribution in the welded joints was determined. The ultrasonic vibration method was used to evaluate the base metal’s and weld metal’s resistance to cavitation. The change in mass was monitored to determine the cavitation rates. The morphology of the surface damage of the base metal and weld metal due to cavitation was monitored using scanning electron microscopy to explain the effect of the shielding gas arc welding process on their resistance to cavitation. © 2023 by the authors.
T2  - Materials
T1  - Effect of Shielding Gas Arc Welding Process on Cavitation Resistance of Welded Joints of AlMg4.5Mn Alloy
SP  - 4781
VL  - 16
DO  - 10.3390/ma16134781
ER  - 

@article{
author = "Dojčinović, Marina and Prokić Cvetković, Radica and Sedmak, Aleksandar and Popović, Olivera and Cvetković, Ivana and Radu, Dorin",
year = "2023",
abstract = "The effect of the shielding gas arc welding process on the cavitation resistance of the three-component aluminum alloy AlMg4.5Mn and its welded joints was investigated. Welding was performed using the GTAW and GMAW processes in a shielded atmosphere of pure argon. After the welding, metallographic tests were performed, and the hardness distribution in the welded joints was determined. The ultrasonic vibration method was used to evaluate the base metal’s and weld metal’s resistance to cavitation. The change in mass was monitored to determine the cavitation rates. The morphology of the surface damage of the base metal and weld metal due to cavitation was monitored using scanning electron microscopy to explain the effect of the shielding gas arc welding process on their resistance to cavitation. © 2023 by the authors.",
journal = "Materials",
title = "Effect of Shielding Gas Arc Welding Process on Cavitation Resistance of Welded Joints of AlMg4.5Mn Alloy",
pages = "4781",
volume = "16",
doi = "10.3390/ma16134781"
}

Dojčinović, M., Prokić Cvetković, R., Sedmak, A., Popović, O., Cvetković, I.,& Radu, D.. (2023). Effect of Shielding Gas Arc Welding Process on Cavitation Resistance of Welded Joints of AlMg4.5Mn Alloy. in Materials, 16, 4781.
https://doi.org/10.3390/ma16134781

Dojčinović M, Prokić Cvetković R, Sedmak A, Popović O, Cvetković I, Radu D. Effect of Shielding Gas Arc Welding Process on Cavitation Resistance of Welded Joints of AlMg4.5Mn Alloy. in Materials. 2023;16:4781.
doi:10.3390/ma16134781 .

Dojčinović, Marina, Prokić Cvetković, Radica, Sedmak, Aleksandar, Popović, Olivera, Cvetković, Ivana, Radu, Dorin, "Effect of Shielding Gas Arc Welding Process on Cavitation Resistance of Welded Joints of AlMg4.5Mn Alloy" in Materials, 16 (2023):4781,
https://doi.org/10.3390/ma16134781 . .

TY  - JOUR
AU  - Prokić Cvetković, Radica
AU  - Popović, Olivera
AU  - Radović, Ljubica
AU  - Sedmak, Aleksandar
AU  - Cvetković, Ivana
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5570
AB  - This paper deals with a three-component aluminum alloy AlMg4.5Mn that was welded using a GTAW process in the shielded atmosphere of Ar+70%He+0.015%N2. The weld-metal toughness was evaluated at three different temperatures using instrumental Charpy pendulum impact testing to measure not only the total energy, but also the crack initiation energy and the crack growth energy. Fractographic analysis of the fracture surfaces and EDS analysis of large second-phase particles on fractured surfaces at each temperature were also carried out. Fractographic analysis at different temperatures indicated a clearly distinguishable fracture mechanism. It was inferred that the absorbed energy was closely correlated with the fracturing of surfaces. Moreover, it was concluded that with decrease in the amount of microscopic voids and dimples, the total energy absorbed also decreased.
PB  - MDPI
T2  - Sustainability
T1  - Fracture Behavior of AlMg4.5Mn Weld Metal at Different Temperatures under Impact Loading
IS  - 2
SP  - 1550
VL  - 15
DO  - 10.3390/su15021550
ER  - 

@article{
author = "Prokić Cvetković, Radica and Popović, Olivera and Radović, Ljubica and Sedmak, Aleksandar and Cvetković, Ivana",
year = "2023",
abstract = "This paper deals with a three-component aluminum alloy AlMg4.5Mn that was welded using a GTAW process in the shielded atmosphere of Ar+70%He+0.015%N2. The weld-metal toughness was evaluated at three different temperatures using instrumental Charpy pendulum impact testing to measure not only the total energy, but also the crack initiation energy and the crack growth energy. Fractographic analysis of the fracture surfaces and EDS analysis of large second-phase particles on fractured surfaces at each temperature were also carried out. Fractographic analysis at different temperatures indicated a clearly distinguishable fracture mechanism. It was inferred that the absorbed energy was closely correlated with the fracturing of surfaces. Moreover, it was concluded that with decrease in the amount of microscopic voids and dimples, the total energy absorbed also decreased.",
publisher = "MDPI",
journal = "Sustainability",
title = "Fracture Behavior of AlMg4.5Mn Weld Metal at Different Temperatures under Impact Loading",
number = "2",
pages = "1550",
volume = "15",
doi = "10.3390/su15021550"
}

Prokić Cvetković, R., Popović, O., Radović, L., Sedmak, A.,& Cvetković, I.. (2023). Fracture Behavior of AlMg4.5Mn Weld Metal at Different Temperatures under Impact Loading. in Sustainability
MDPI., 15(2), 1550.
https://doi.org/10.3390/su15021550

Prokić Cvetković R, Popović O, Radović L, Sedmak A, Cvetković I. Fracture Behavior of AlMg4.5Mn Weld Metal at Different Temperatures under Impact Loading. in Sustainability. 2023;15(2):1550.
doi:10.3390/su15021550 .

Prokić Cvetković, Radica, Popović, Olivera, Radović, Ljubica, Sedmak, Aleksandar, Cvetković, Ivana, "Fracture Behavior of AlMg4.5Mn Weld Metal at Different Temperatures under Impact Loading" in Sustainability, 15, no. 2 (2023):1550,
https://doi.org/10.3390/su15021550 . .

TY  - CONF
AU  - Đorđević, Branislav
AU  - Sedmak, Aleksandar
AU  - Mastilović, Sreten
AU  - Popović, Olivera
AU  - Kirin, Snežana
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6274
AB  - This paper presents a review of different approaches through history concerning DTB transition phenomenon of ferritic steels and their characterization using FM concept, from the earliest studies based on LEFM to the application of the EPFM concept. The large scattering of the experimental fracture toughness data, characteristic of all ferritic steels in the transition temperature region, has imposed the need of including statistical methods for data processing. Such approach that began in the 1970s can be encountered even nowadays as the base of fracture toughness data interpretation in DTB problems. An overview of studies with statistical interpretation of experimental data in the transition temperature region is also given. Aforementioned provides a foundation for novel approaches in DTB transition problems, which include size effects and scaling of geometrically similar specimens.
C3  - Procedia Structural Integrity
T1  - History of ductile-to-brittle transition problem of ferritic steels
EP  - 95
SP  - 88
VL  - 42
DO  - 10.1016/j.prostr.2022.12.010
ER  - 

@conference{
author = "Đorđević, Branislav and Sedmak, Aleksandar and Mastilović, Sreten and Popović, Olivera and Kirin, Snežana",
year = "2022",
abstract = "This paper presents a review of different approaches through history concerning DTB transition phenomenon of ferritic steels and their characterization using FM concept, from the earliest studies based on LEFM to the application of the EPFM concept. The large scattering of the experimental fracture toughness data, characteristic of all ferritic steels in the transition temperature region, has imposed the need of including statistical methods for data processing. Such approach that began in the 1970s can be encountered even nowadays as the base of fracture toughness data interpretation in DTB problems. An overview of studies with statistical interpretation of experimental data in the transition temperature region is also given. Aforementioned provides a foundation for novel approaches in DTB transition problems, which include size effects and scaling of geometrically similar specimens.",
journal = "Procedia Structural Integrity",
title = "History of ductile-to-brittle transition problem of ferritic steels",
pages = "95-88",
volume = "42",
doi = "10.1016/j.prostr.2022.12.010"
}

Đorđević, B., Sedmak, A., Mastilović, S., Popović, O.,& Kirin, S.. (2022). History of ductile-to-brittle transition problem of ferritic steels. in Procedia Structural Integrity, 42, 88-95.
https://doi.org/10.1016/j.prostr.2022.12.010

Đorđević B, Sedmak A, Mastilović S, Popović O, Kirin S. History of ductile-to-brittle transition problem of ferritic steels. in Procedia Structural Integrity. 2022;42:88-95.
doi:10.1016/j.prostr.2022.12.010 .

Đorđević, Branislav, Sedmak, Aleksandar, Mastilović, Sreten, Popović, Olivera, Kirin, Snežana, "History of ductile-to-brittle transition problem of ferritic steels" in Procedia Structural Integrity, 42 (2022):88-95,
https://doi.org/10.1016/j.prostr.2022.12.010 . .

TY  - BOOK
AU  - Prokić Cvetković, Radica
AU  - Popović, Olivera
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6327
AB  - Predgovor
Ovaj udžbenik je namenjen studentima koji slušaju predmet Mašinski materijali
1, na osnovnim akademskim studijama u drugom semestru sa fondom časova 1+1,
a napisan je prema nastavnom planu i programu. Osnovna namena ovog udžbenika
je da pomogne studentima u savladavanju osnovnih znanja iz nauke o materija-
lima, koja su im potrebna u toku daljeg studiranja. Pred autorima je bilo velikih
dilema kako, da na jasan način izlože veoma komplikovanu i raznovrsnu materiju,
imajući u vidu da prethodno stečeno srednjoškolsko znanje studenata, iz fizike i
hemije, nije ujednačeno.
Nakon uvodnih razmatranja o istorijskom razvoju i podeli materijala, prelazi se
na strukturu atoma i veze između atoma, kao i na kristalnu strukturu materijala
i greške u kristalnoj strukturi. Objašnjen je mehanizam difuzije u čvrstom
stanju, mehanička svojstva materijala, kao i oštećenja i vrste lomova u materijalima.
Takođe je razmatrana teorija legura i osnovne vrste dvokomponentnih dijagrama
stanja. Nastavnim planom i programom je predviđeno da se osim metalnih
materijala razmatraju, u manjoj meri, polimeri, keramike i kompozitni materijali.
Imajući u vidu stalni razvoj materijala kao i pojavu novih inženjerskih materijala,
svakako se vodilo računa da se i njima posveti odgovarajuća pažnja.
Na kraju knjige navedena je i literatura koja može da se koristi u cilju proširenja
znanja iz oblasti nauke o materijalima.
Tokom pisanja ove knjige ideja je bila da se materija izloži u što jasnijem, a donekle,
i popularnom stilu da bi bila dostupna i razumljiva studentima sa manjim obimom
predznanja iz ove oblasti. Zbog toga, strogo se vodilo računa da se, gde god je to
moguće, reči zamene dobrom slikom ili dijagramom.
Ukoliko uspešno savladaju ovo gradivo studenti mogu biti sigurni da će imati solidnu
osnovu za savladavanje gradiva iz određenih predmeta tokom studiranja, kao i da
će u praksi primeniti stečeno znanje.
Autori se zahvaljuju recenzentima i kolegama na korisnim primedbama i sugestijama.
Posebno se zahvaljujemo profesorima dr Veri Šijački Žeravčić i dr Nenadu
Radoviću koji su svojim korisnim predlozima i sugestijama doprineli poboljšanju
kvaliteta knjige. Takođe se zahvaljujemo dr Draganu Cvetkoviću za pruženu moralnu
podršku i nesebičnu pomoć pri tehničkoj obradi.
Svojim studentima želimo puno uspeha u životu i daljem studiranju!
PB  - Univerzitet u Beogradu, Mašinski fakultet
T2  - Univerzitet u Beogradu, Mašinski fakultet
T1  - Mašinski materijali 1
VL  - III
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6327
ER  - 

@book{
author = "Prokić Cvetković, Radica and Popović, Olivera",
year = "2022",
abstract = "Predgovor
Ovaj udžbenik je namenjen studentima koji slušaju predmet Mašinski materijali
1, na osnovnim akademskim studijama u drugom semestru sa fondom časova 1+1,
a napisan je prema nastavnom planu i programu. Osnovna namena ovog udžbenika
je da pomogne studentima u savladavanju osnovnih znanja iz nauke o materija-
lima, koja su im potrebna u toku daljeg studiranja. Pred autorima je bilo velikih
dilema kako, da na jasan način izlože veoma komplikovanu i raznovrsnu materiju,
imajući u vidu da prethodno stečeno srednjoškolsko znanje studenata, iz fizike i
hemije, nije ujednačeno.
Nakon uvodnih razmatranja o istorijskom razvoju i podeli materijala, prelazi se
na strukturu atoma i veze između atoma, kao i na kristalnu strukturu materijala
i greške u kristalnoj strukturi. Objašnjen je mehanizam difuzije u čvrstom
stanju, mehanička svojstva materijala, kao i oštećenja i vrste lomova u materijalima.
Takođe je razmatrana teorija legura i osnovne vrste dvokomponentnih dijagrama
stanja. Nastavnim planom i programom je predviđeno da se osim metalnih
materijala razmatraju, u manjoj meri, polimeri, keramike i kompozitni materijali.
Imajući u vidu stalni razvoj materijala kao i pojavu novih inženjerskih materijala,
svakako se vodilo računa da se i njima posveti odgovarajuća pažnja.
Na kraju knjige navedena je i literatura koja može da se koristi u cilju proširenja
znanja iz oblasti nauke o materijalima.
Tokom pisanja ove knjige ideja je bila da se materija izloži u što jasnijem, a donekle,
i popularnom stilu da bi bila dostupna i razumljiva studentima sa manjim obimom
predznanja iz ove oblasti. Zbog toga, strogo se vodilo računa da se, gde god je to
moguće, reči zamene dobrom slikom ili dijagramom.
Ukoliko uspešno savladaju ovo gradivo studenti mogu biti sigurni da će imati solidnu
osnovu za savladavanje gradiva iz određenih predmeta tokom studiranja, kao i da
će u praksi primeniti stečeno znanje.
Autori se zahvaljuju recenzentima i kolegama na korisnim primedbama i sugestijama.
Posebno se zahvaljujemo profesorima dr Veri Šijački Žeravčić i dr Nenadu
Radoviću koji su svojim korisnim predlozima i sugestijama doprineli poboljšanju
kvaliteta knjige. Takođe se zahvaljujemo dr Draganu Cvetkoviću za pruženu moralnu
podršku i nesebičnu pomoć pri tehničkoj obradi.
Svojim studentima želimo puno uspeha u životu i daljem studiranju!",
publisher = "Univerzitet u Beogradu, Mašinski fakultet",
journal = "Univerzitet u Beogradu, Mašinski fakultet",
title = "Mašinski materijali 1",
volume = "III",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6327"
}

Prokić Cvetković, R.,& Popović, O.. (2022). Mašinski materijali 1. in Univerzitet u Beogradu, Mašinski fakultet
Univerzitet u Beogradu, Mašinski fakultet., III.
https://hdl.handle.net/21.15107/rcub_machinery_6327

Prokić Cvetković R, Popović O. Mašinski materijali 1. in Univerzitet u Beogradu, Mašinski fakultet. 2022;III.
https://hdl.handle.net/21.15107/rcub_machinery_6327 .

Prokić Cvetković, Radica, Popović, Olivera, "Mašinski materijali 1" in Univerzitet u Beogradu, Mašinski fakultet, III (2022),
https://hdl.handle.net/21.15107/rcub_machinery_6327 .

TY  - GEN
AU  - Prokić Cvetković, Radica
AU  - Radaković, Zoran
AU  - Popović, Olivera
AU  - Bakić, Gordana
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
AU  - Milošević, Nenad
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6328
AB  - Priručnik za lab.ispitivanja iz Mašinskih materijala 1 i Mašinskih materijala 2
PB  - Univerzitet u Beogradu, Mašinski fakultet
T2  - Univerzitet u Beogradu, Mašinski fakultet
T1  - Mašinski materijali 1 i Mašinski materijali 2 - Priručnik za laboratorijske vežbe
VL  - II
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6328
ER  - 

@misc{
author = "Prokić Cvetković, Radica and Radaković, Zoran and Popović, Olivera and Bakić, Gordana and Đukić, Miloš and Rajičić, Bratislav and Milošević, Nenad",
year = "2021",
abstract = "Priručnik za lab.ispitivanja iz Mašinskih materijala 1 i Mašinskih materijala 2",
publisher = "Univerzitet u Beogradu, Mašinski fakultet",
journal = "Univerzitet u Beogradu, Mašinski fakultet",
title = "Mašinski materijali 1 i Mašinski materijali 2 - Priručnik za laboratorijske vežbe",
volume = "II",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6328"
}

Prokić Cvetković, R., Radaković, Z., Popović, O., Bakić, G., Đukić, M., Rajičić, B.,& Milošević, N.. (2021). Mašinski materijali 1 i Mašinski materijali 2 - Priručnik za laboratorijske vežbe. in Univerzitet u Beogradu, Mašinski fakultet
Univerzitet u Beogradu, Mašinski fakultet., II.
https://hdl.handle.net/21.15107/rcub_machinery_6328

Prokić Cvetković R, Radaković Z, Popović O, Bakić G, Đukić M, Rajičić B, Milošević N. Mašinski materijali 1 i Mašinski materijali 2 - Priručnik za laboratorijske vežbe. in Univerzitet u Beogradu, Mašinski fakultet. 2021;II.
https://hdl.handle.net/21.15107/rcub_machinery_6328 .

Prokić Cvetković, Radica, Radaković, Zoran, Popović, Olivera, Bakić, Gordana, Đukić, Miloš, Rajičić, Bratislav, Milošević, Nenad, "Mašinski materijali 1 i Mašinski materijali 2 - Priručnik za laboratorijske vežbe" in Univerzitet u Beogradu, Mašinski fakultet, II (2021),
https://hdl.handle.net/21.15107/rcub_machinery_6328 .

TY  - BOOK
AU  - Prokić Cvetković, Radica
AU  - Popović, Olivera
AU  - Bakić, Gordana
AU  - Đukić, Miloš
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6326
AB  - Predgovor
Predmeti koji nas okružuju izrađeni su od različitih vrsta materijala, pa je poznavanje njihovih
osobina, načina proizvodnje, postojanosti u radnom okruženju, mogućnosti nabavke
i cene od velikog značaja pri izboru materijala za konkretnu namenu. Tendencije savremenog
načina života su usmerene ka smanjenju potrošnje energije i zaštite životne sredine, pa
se pred inženjere, projektante i konstruktore postavljaju zahtevi da izaberu materijal koji
ima što manju cenu i masu uz istovremeno zadovoljavajuće fizičke, hemijske, mehaničke,
tehnološke ili neke specifične osobine. U svetu se dosta novca ulaže u istraživačke i razvojne
projekte za razvoj novih materijala ili modifikaciju osobina postojećih materijala.
Ovaj udžbenik je namenjen studentima Osnovnih akademskih studija koji slušaju predmet
Mašinski materijali 2 sa fondom časova 5 u trećem semestru na Mašinskom fakultetu
Univerziteta u Beogradu. Gradivo u ovom udžbeniku prati kontinuitet gradiva izloženog
u knjizi Mašinski materijali 1, pa je za praćenje nastave iz predmeta Mašinski materijali 2
neophodno predznanje iz tog predmeta. Cilj autora je bio da ovako složenu problematiku
što jednostavnije prikažu, a da se pri tome održi odgovarajući akademski nivo. Uvek, kada
je to bilo moguće, autori su se potrudili da odgovarajuće objašnjenje ilustruju dobrom
slikom.
Plan i program predmeta Mašinski materijali 2 se sastoji iz dve celine i to: metalni materijali
i postupci spajanja materijala zavarivanjem i lemljenjem.
U prvom delu udžbenika opisani su metalni materijali, njihov način dobijanja, kao i fizička,
hemijska i mehanička svojstva. Od metalnih materijala najviše pažnje je posvećeno
železu i njegovim legurama jer su to još uvek najzastupljeniji konstrukcioni materijali u
mašinstvu. Železo gradi dve grupe legura: čelike i gvožđa; pa je opisan način njihovog
dobijanja, mehaničke i fizičke osobine, kao i njihovo označavanje po najnovijem standardu.
Takođe su opisane neravnotežne transformacije pri hlađenju čelika, kao i termička,
termomehanička i termohemijska obrada. U nastavku je dosta pažnje posvećeno aluminijumu
i njegovim legurama, jer su oni po zastupljenosti odmah posle čelika. Bakar, nikl,
titan i drugi obojeni metali su takođe prikazani.
U drugom delu udžbenika dati su osnovni pojmovi u zavarivanju i opisani su konvencionalni
postupci zavarivanja. Takođe su prikazana ispitivanja zavarenih spojeva metodama sa razaranjem
i bez razaranja, greške u zavarenim spojevima i nivoi kvaliteta zavarenih spojeva.
Kao postupak spajanja materijala, pored zavarivanja, može da se koristi i lemljenje,
pa su na kraju opisani njegovi osnovni principi.
Na kraju knjige navedena je literatura koja može da se koristi u cilju proširenja znanja iz
ovih oblasti.
Autori se zahvaljuju recenzentima, dr Nenadu Radoviću, redovnom profesoru Tehnološkometalurškog
fakulteta Univerziteta u Beogradu i dr Aleksandru Sedmaku, profesoru emeritus
Mašinskog fakulteta Univerziteta u Beogradu, koji su svojim korisnim predlozima
i sugestijama doprineli poboljšanju kvaliteta knjige. Takođe se zahvaljujemo i kolegama
iz laboratorije "KonMat" koji su nam ustupili slike iz IBR-a, kao i kolegi dr Radovanu
Puzoviću, profesoru Mašinskog fakulteta, na nesebičnoj pomoći.
I na kraju, ne kao manje važno, želimo da istaknemo da ova knjiga sigurno na bi ovako
izgledala da nije bilo ogromnog truda i strpljenja prof. dr Dragana Cvetkovića, i na tome
mu neizmerno hvala.
PB  - Univerzitet u Beogradu, Mašinski fakultet
T2  - Univerzitet u Beogradu, Mašinski fakultet
T1  - Mašinski materijali 2
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6326
ER  - 

@book{
author = "Prokić Cvetković, Radica and Popović, Olivera and Bakić, Gordana and Đukić, Miloš",
year = "2021",
abstract = "Predgovor
Predmeti koji nas okružuju izrađeni su od različitih vrsta materijala, pa je poznavanje njihovih
osobina, načina proizvodnje, postojanosti u radnom okruženju, mogućnosti nabavke
i cene od velikog značaja pri izboru materijala za konkretnu namenu. Tendencije savremenog
načina života su usmerene ka smanjenju potrošnje energije i zaštite životne sredine, pa
se pred inženjere, projektante i konstruktore postavljaju zahtevi da izaberu materijal koji
ima što manju cenu i masu uz istovremeno zadovoljavajuće fizičke, hemijske, mehaničke,
tehnološke ili neke specifične osobine. U svetu se dosta novca ulaže u istraživačke i razvojne
projekte za razvoj novih materijala ili modifikaciju osobina postojećih materijala.
Ovaj udžbenik je namenjen studentima Osnovnih akademskih studija koji slušaju predmet
Mašinski materijali 2 sa fondom časova 5 u trećem semestru na Mašinskom fakultetu
Univerziteta u Beogradu. Gradivo u ovom udžbeniku prati kontinuitet gradiva izloženog
u knjizi Mašinski materijali 1, pa je za praćenje nastave iz predmeta Mašinski materijali 2
neophodno predznanje iz tog predmeta. Cilj autora je bio da ovako složenu problematiku
što jednostavnije prikažu, a da se pri tome održi odgovarajući akademski nivo. Uvek, kada
je to bilo moguće, autori su se potrudili da odgovarajuće objašnjenje ilustruju dobrom
slikom.
Plan i program predmeta Mašinski materijali 2 se sastoji iz dve celine i to: metalni materijali
i postupci spajanja materijala zavarivanjem i lemljenjem.
U prvom delu udžbenika opisani su metalni materijali, njihov način dobijanja, kao i fizička,
hemijska i mehanička svojstva. Od metalnih materijala najviše pažnje je posvećeno
železu i njegovim legurama jer su to još uvek najzastupljeniji konstrukcioni materijali u
mašinstvu. Železo gradi dve grupe legura: čelike i gvožđa; pa je opisan način njihovog
dobijanja, mehaničke i fizičke osobine, kao i njihovo označavanje po najnovijem standardu.
Takođe su opisane neravnotežne transformacije pri hlađenju čelika, kao i termička,
termomehanička i termohemijska obrada. U nastavku je dosta pažnje posvećeno aluminijumu
i njegovim legurama, jer su oni po zastupljenosti odmah posle čelika. Bakar, nikl,
titan i drugi obojeni metali su takođe prikazani.
U drugom delu udžbenika dati su osnovni pojmovi u zavarivanju i opisani su konvencionalni
postupci zavarivanja. Takođe su prikazana ispitivanja zavarenih spojeva metodama sa razaranjem
i bez razaranja, greške u zavarenim spojevima i nivoi kvaliteta zavarenih spojeva.
Kao postupak spajanja materijala, pored zavarivanja, može da se koristi i lemljenje,
pa su na kraju opisani njegovi osnovni principi.
Na kraju knjige navedena je literatura koja može da se koristi u cilju proširenja znanja iz
ovih oblasti.
Autori se zahvaljuju recenzentima, dr Nenadu Radoviću, redovnom profesoru Tehnološkometalurškog
fakulteta Univerziteta u Beogradu i dr Aleksandru Sedmaku, profesoru emeritus
Mašinskog fakulteta Univerziteta u Beogradu, koji su svojim korisnim predlozima
i sugestijama doprineli poboljšanju kvaliteta knjige. Takođe se zahvaljujemo i kolegama
iz laboratorije "KonMat" koji su nam ustupili slike iz IBR-a, kao i kolegi dr Radovanu
Puzoviću, profesoru Mašinskog fakulteta, na nesebičnoj pomoći.
I na kraju, ne kao manje važno, želimo da istaknemo da ova knjiga sigurno na bi ovako
izgledala da nije bilo ogromnog truda i strpljenja prof. dr Dragana Cvetkovića, i na tome
mu neizmerno hvala.",
publisher = "Univerzitet u Beogradu, Mašinski fakultet",
journal = "Univerzitet u Beogradu, Mašinski fakultet",
title = "Mašinski materijali 2",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6326"
}

Prokić Cvetković, R., Popović, O., Bakić, G.,& Đukić, M.. (2021). Mašinski materijali 2. in Univerzitet u Beogradu, Mašinski fakultet
Univerzitet u Beogradu, Mašinski fakultet..
https://hdl.handle.net/21.15107/rcub_machinery_6326

Prokić Cvetković R, Popović O, Bakić G, Đukić M. Mašinski materijali 2. in Univerzitet u Beogradu, Mašinski fakultet. 2021;.
https://hdl.handle.net/21.15107/rcub_machinery_6326 .

Prokić Cvetković, Radica, Popović, Olivera, Bakić, Gordana, Đukić, Miloš, "Mašinski materijali 2" in Univerzitet u Beogradu, Mašinski fakultet (2021),
https://hdl.handle.net/21.15107/rcub_machinery_6326 .

TY  - CONF
AU  - Lazić, Vukić
AU  - Nikolić, R.
AU  - Arsić, D.
AU  - Arsić, M.
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Hadzima, B.
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3631
AB  - The problem considered in this paper is the welding technology of the steel assembly of a firefighter truck rear bridge semi-housing. Since in this procedure the welding is done of the two dissimilar steels, it is necessary to analyze effects of welding on mechanical properties and microstructure of individual joint's zones. The weldability of the base metal was considered first (semi-housing tube and flange), then the welding method and the filler metal were selected and, finally, the technological parameters of welding were calculated. The computational and experimental methods were used for the base metal weldability estimate, based on the hardness measurements in the joint's critical zones and analysis of their structures. Experimental investigations performed were aimed for verification and/or eventual correction of the proposed welding technology.
PB  - Elsevier B.V.
C3  - Transportation Research Procedia
T1  - Analysis of welding of the rear bridge semi-housing assembly of a firefighter truck by the semi-automatic procedure in gas protection
EP  - 552
SP  - 544
VL  - 55
DO  - 10.1016/j.trpro.2021.07.020
ER  - 

@conference{
author = "Lazić, Vukić and Nikolić, R. and Arsić, D. and Arsić, M. and Popović, Olivera and Prokić-Cvetković, Radica and Hadzima, B.",
year = "2021",
abstract = "The problem considered in this paper is the welding technology of the steel assembly of a firefighter truck rear bridge semi-housing. Since in this procedure the welding is done of the two dissimilar steels, it is necessary to analyze effects of welding on mechanical properties and microstructure of individual joint's zones. The weldability of the base metal was considered first (semi-housing tube and flange), then the welding method and the filler metal were selected and, finally, the technological parameters of welding were calculated. The computational and experimental methods were used for the base metal weldability estimate, based on the hardness measurements in the joint's critical zones and analysis of their structures. Experimental investigations performed were aimed for verification and/or eventual correction of the proposed welding technology.",
publisher = "Elsevier B.V.",
journal = "Transportation Research Procedia",
title = "Analysis of welding of the rear bridge semi-housing assembly of a firefighter truck by the semi-automatic procedure in gas protection",
pages = "552-544",
volume = "55",
doi = "10.1016/j.trpro.2021.07.020"
}

Lazić, V., Nikolić, R., Arsić, D., Arsić, M., Popović, O., Prokić-Cvetković, R.,& Hadzima, B.. (2021). Analysis of welding of the rear bridge semi-housing assembly of a firefighter truck by the semi-automatic procedure in gas protection. in Transportation Research Procedia
Elsevier B.V.., 55, 544-552.
https://doi.org/10.1016/j.trpro.2021.07.020

Lazić V, Nikolić R, Arsić D, Arsić M, Popović O, Prokić-Cvetković R, Hadzima B. Analysis of welding of the rear bridge semi-housing assembly of a firefighter truck by the semi-automatic procedure in gas protection. in Transportation Research Procedia. 2021;55:544-552.
doi:10.1016/j.trpro.2021.07.020 .

Lazić, Vukić, Nikolić, R., Arsić, D., Arsić, M., Popović, Olivera, Prokić-Cvetković, Radica, Hadzima, B., "Analysis of welding of the rear bridge semi-housing assembly of a firefighter truck by the semi-automatic procedure in gas protection" in Transportation Research Procedia, 55 (2021):544-552,
https://doi.org/10.1016/j.trpro.2021.07.020 . .

TY  - JOUR
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Radović, Ljubica
AU  - Burzić, Zijah
AU  - Arsić, Dušan
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3435
AB  - Surface welding of rail steel with self-shielded wire was conducted with different heat inputs, and the influence of welding heat input on the total impact energy and its components, crack growth rate and fracture mechanism was systematically investigated. It is shown that toughness decreases as heat input increases, but, with a temperature decrease, these differences are not so marked. An increase of heat input leads to increasing the share of transgranular brittle fracture, what is in complete accordance with the obtained energy values. It is established that fatigue life increases when increasing the welding heat input, while resistance to crack growth decreases in the final deposit layer up to the HAZ at all heat inputs. Based on obtained results, the optimal value of heat input is defined for the selected welding procedure.
PB  - Institut za ispitivanje materijala, Beograd
T2  - Structural Integrity and Life
T1  - The effect of heat input on the fracture behaviour of surface weld metal of rail steel
EP  - 81
IS  - 1
SP  - 77
VL  - 20
UR  - https://hdl.handle.net/21.15107/rcub_machinery_3435
ER  - 

@article{
author = "Popović, Olivera and Prokić-Cvetković, Radica and Radović, Ljubica and Burzić, Zijah and Arsić, Dušan",
year = "2020",
abstract = "Surface welding of rail steel with self-shielded wire was conducted with different heat inputs, and the influence of welding heat input on the total impact energy and its components, crack growth rate and fracture mechanism was systematically investigated. It is shown that toughness decreases as heat input increases, but, with a temperature decrease, these differences are not so marked. An increase of heat input leads to increasing the share of transgranular brittle fracture, what is in complete accordance with the obtained energy values. It is established that fatigue life increases when increasing the welding heat input, while resistance to crack growth decreases in the final deposit layer up to the HAZ at all heat inputs. Based on obtained results, the optimal value of heat input is defined for the selected welding procedure.",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Structural Integrity and Life",
title = "The effect of heat input on the fracture behaviour of surface weld metal of rail steel",
pages = "81-77",
number = "1",
volume = "20",
url = "https://hdl.handle.net/21.15107/rcub_machinery_3435"
}

Popović, O., Prokić-Cvetković, R., Radović, L., Burzić, Z.,& Arsić, D.. (2020). The effect of heat input on the fracture behaviour of surface weld metal of rail steel. in Structural Integrity and Life
Institut za ispitivanje materijala, Beograd., 20(1), 77-81.
https://hdl.handle.net/21.15107/rcub_machinery_3435

Popović O, Prokić-Cvetković R, Radović L, Burzić Z, Arsić D. The effect of heat input on the fracture behaviour of surface weld metal of rail steel. in Structural Integrity and Life. 2020;20(1):77-81.
https://hdl.handle.net/21.15107/rcub_machinery_3435 .

Popović, Olivera, Prokić-Cvetković, Radica, Radović, Ljubica, Burzić, Zijah, Arsić, Dušan, "The effect of heat input on the fracture behaviour of surface weld metal of rail steel" in Structural Integrity and Life, 20, no. 1 (2020):77-81,
https://hdl.handle.net/21.15107/rcub_machinery_3435 .

TY  - JOUR
AU  - Jovičić, Radomir
AU  - Pantelić, N.
AU  - Sedmak, S.
AU  - Pavlović, D.
AU  - Štrbački, Živko
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2749
AB  - Smanjenje otvora žljeba može značajno doprineti efikasnosti zavarivanja i produktivnosti teških metalnih konstrukcija Uobičajena je upotreba uglova žljeba od 45° i 60°. Smanjenje ugla otvora žljeba smanjuje potreban broj zavara, čime se smanjuje trajanje zavarivanja, potrošnja materijala za ispunu i zaostali naponi i deformacije. Međutim, smanjivanje ugla žljeba dovodi do određenih poteškoća. Teško je kontrolisati luk u uskom žljebu, što može dovesti do problema sa kvalitetom spoja. U ovom radu je prikazano zavarivanje sučeonih spojeva od čelika debljine 22 mm sa uglom žljeba od 20°. Zavarivanje je izvršeno korišćenjem MAG postupkom zavarivanja, uz softversku kontrolu luka.
AB  - Reduction in groove opening can significantly contribute to welding efficiency and productivity of heavy metal structures. It is common practice to use welded joint groove angles of 45° and 60°. Reduction of the groove opening angle decreases the necessary number of welding passes, thus decreasing the welding duration, filler material consumption and residual stresses and strain. However, groove angle reduction leads to certain difficulties. It is hard to control the arc in a narrow groove, which could lead to welded joint quality issues. In this paper, welding of butt joints made of 22 mm thick steel with the groove angle of 20° is shown. Welding was performed using the MAG procedure, with software controlled ar.
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Zavarivanje debelozidnog čelika u uskom žljebu
T1  - Welding of thick-walled steels in a narrow groove
EP  - 129
IS  - 3
SP  - 119
VL  - 63
DO  - 10.5937/zzk1803119J
ER  - 

@article{
author = "Jovičić, Radomir and Pantelić, N. and Sedmak, S. and Pavlović, D. and Štrbački, Živko and Popović, Olivera and Prokić-Cvetković, Radica",
year = "2018",
abstract = "Smanjenje otvora žljeba može značajno doprineti efikasnosti zavarivanja i produktivnosti teških metalnih konstrukcija Uobičajena je upotreba uglova žljeba od 45° i 60°. Smanjenje ugla otvora žljeba smanjuje potreban broj zavara, čime se smanjuje trajanje zavarivanja, potrošnja materijala za ispunu i zaostali naponi i deformacije. Međutim, smanjivanje ugla žljeba dovodi do određenih poteškoća. Teško je kontrolisati luk u uskom žljebu, što može dovesti do problema sa kvalitetom spoja. U ovom radu je prikazano zavarivanje sučeonih spojeva od čelika debljine 22 mm sa uglom žljeba od 20°. Zavarivanje je izvršeno korišćenjem MAG postupkom zavarivanja, uz softversku kontrolu luka., Reduction in groove opening can significantly contribute to welding efficiency and productivity of heavy metal structures. It is common practice to use welded joint groove angles of 45° and 60°. Reduction of the groove opening angle decreases the necessary number of welding passes, thus decreasing the welding duration, filler material consumption and residual stresses and strain. However, groove angle reduction leads to certain difficulties. It is hard to control the arc in a narrow groove, which could lead to welded joint quality issues. In this paper, welding of butt joints made of 22 mm thick steel with the groove angle of 20° is shown. Welding was performed using the MAG procedure, with software controlled ar.",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Zavarivanje debelozidnog čelika u uskom žljebu, Welding of thick-walled steels in a narrow groove",
pages = "129-119",
number = "3",
volume = "63",
doi = "10.5937/zzk1803119J"
}

Jovičić, R., Pantelić, N., Sedmak, S., Pavlović, D., Štrbački, Ž., Popović, O.,& Prokić-Cvetković, R.. (2018). Zavarivanje debelozidnog čelika u uskom žljebu. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 63(3), 119-129.
https://doi.org/10.5937/zzk1803119J

Jovičić R, Pantelić N, Sedmak S, Pavlović D, Štrbački Ž, Popović O, Prokić-Cvetković R. Zavarivanje debelozidnog čelika u uskom žljebu. in Zavarivanje i zavarene konstrukcije. 2018;63(3):119-129.
doi:10.5937/zzk1803119J .

Jovičić, Radomir, Pantelić, N., Sedmak, S., Pavlović, D., Štrbački, Živko, Popović, Olivera, Prokić-Cvetković, Radica, "Zavarivanje debelozidnog čelika u uskom žljebu" in Zavarivanje i zavarene konstrukcije, 63, no. 3 (2018):119-129,
https://doi.org/10.5937/zzk1803119J . .

TY  - CONF
AU  - Prokić-Cvetković, Radica
AU  - Popović, Olivera
AU  - Jovičić, Radomir
AU  - Milošević, Nenad
AU  - Burzić, Zijah
AU  - Cvetković, Ivana
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2884
AB  - In this paper is presented behavior of microalloyed steel weld metal with niobium during impact testing, as well as microstructural characterization. Impact tests were done on instrumented Charpy pendulum at room temperature, at -40 degrees C and -55 degrees C. At room temperature, crack propagation energy is much higher than crack initiation energy, while at -40 degrees C and -55 degrees C crack growth energy is lower than crack initiation energy. Fractographic investigation of the fracture surfaces has shown that at room temperature ductile trans-granular fracture is dominant, with a small amount of brittle trans-granular fracture. At lower temperature, the share of brittle fracture is increased, and inter-granular brittle fracture becomes dominant
PB  - Elsevier Science Bv, Amsterdam
C3  - Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity
T1  - Microstructural and fracture analysis of microalloyed steel weld metal
EP  - 2226
SP  - 2221
VL  - 13
DO  - 10.1016/j.prostr.2018.12.137
ER  - 

@conference{
author = "Prokić-Cvetković, Radica and Popović, Olivera and Jovičić, Radomir and Milošević, Nenad and Burzić, Zijah and Cvetković, Ivana",
year = "2018",
abstract = "In this paper is presented behavior of microalloyed steel weld metal with niobium during impact testing, as well as microstructural characterization. Impact tests were done on instrumented Charpy pendulum at room temperature, at -40 degrees C and -55 degrees C. At room temperature, crack propagation energy is much higher than crack initiation energy, while at -40 degrees C and -55 degrees C crack growth energy is lower than crack initiation energy. Fractographic investigation of the fracture surfaces has shown that at room temperature ductile trans-granular fracture is dominant, with a small amount of brittle trans-granular fracture. At lower temperature, the share of brittle fracture is increased, and inter-granular brittle fracture becomes dominant",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity",
title = "Microstructural and fracture analysis of microalloyed steel weld metal",
pages = "2226-2221",
volume = "13",
doi = "10.1016/j.prostr.2018.12.137"
}

Prokić-Cvetković, R., Popović, O., Jovičić, R., Milošević, N., Burzić, Z.,& Cvetković, I.. (2018). Microstructural and fracture analysis of microalloyed steel weld metal. in Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity
Elsevier Science Bv, Amsterdam., 13, 2221-2226.
https://doi.org/10.1016/j.prostr.2018.12.137

Prokić-Cvetković R, Popović O, Jovičić R, Milošević N, Burzić Z, Cvetković I. Microstructural and fracture analysis of microalloyed steel weld metal. in Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity. 2018;13:2221-2226.
doi:10.1016/j.prostr.2018.12.137 .

Prokić-Cvetković, Radica, Popović, Olivera, Jovičić, Radomir, Milošević, Nenad, Burzić, Zijah, Cvetković, Ivana, "Microstructural and fracture analysis of microalloyed steel weld metal" in Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity, 13 (2018):2221-2226,
https://doi.org/10.1016/j.prostr.2018.12.137 . .

TY  - CONF
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Milošević, Nenad
AU  - Jovičić, Radomir
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4270
AB  - Stabilnost procesa zavarivanja ima značajan uticaj na postizanje propisanog
nivoa kvaliteta zavarenog spoja. Povećanje stabilnosti utiče na smanjenje
mogućnosti pojave nesavršenosti, odnosno grešaka u samom spoju. Stabilnost procesa zavarivanja se ogleda u stabilnosti električnog luka. Promene
dužine luka tokom zavarivanja utiču na varijaciju parametara zavarivanja,
tačnije na jačinu struje i napon. Na osnovu praćenja parametara zavarivanja
u realnom vremenu može se izvršiti statistička analiza dobijenih rezultata.
U radu je prikazan uticaj brzine dovođenja žice i vrste zaštitne atmosfere na
stabilnost MIG/MAG postupka zavarivanja pri upotrebi metalne punjene
elektrodne žice.
C3  - Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications
T1  - Uticaj zaštitne atmosfere i brzine dovođenja žice na stabilnost mig/mag postupka zavarivanja
EP  - 201
SP  - 197
DO  - 10.15308/Sinteza-2018-197-201
ER  - 

@conference{
author = "Popović, Olivera and Prokić-Cvetković, Radica and Milošević, Nenad and Jovičić, Radomir",
year = "2018",
abstract = "Stabilnost procesa zavarivanja ima značajan uticaj na postizanje propisanog
nivoa kvaliteta zavarenog spoja. Povećanje stabilnosti utiče na smanjenje
mogućnosti pojave nesavršenosti, odnosno grešaka u samom spoju. Stabilnost procesa zavarivanja se ogleda u stabilnosti električnog luka. Promene
dužine luka tokom zavarivanja utiču na varijaciju parametara zavarivanja,
tačnije na jačinu struje i napon. Na osnovu praćenja parametara zavarivanja
u realnom vremenu može se izvršiti statistička analiza dobijenih rezultata.
U radu je prikazan uticaj brzine dovođenja žice i vrste zaštitne atmosfere na
stabilnost MIG/MAG postupka zavarivanja pri upotrebi metalne punjene
elektrodne žice.",
journal = "Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications",
title = "Uticaj zaštitne atmosfere i brzine dovođenja žice na stabilnost mig/mag postupka zavarivanja",
pages = "201-197",
doi = "10.15308/Sinteza-2018-197-201"
}

Popović, O., Prokić-Cvetković, R., Milošević, N.,& Jovičić, R.. (2018). Uticaj zaštitne atmosfere i brzine dovođenja žice na stabilnost mig/mag postupka zavarivanja. in Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications, 197-201.
https://doi.org/10.15308/Sinteza-2018-197-201

Popović O, Prokić-Cvetković R, Milošević N, Jovičić R. Uticaj zaštitne atmosfere i brzine dovođenja žice na stabilnost mig/mag postupka zavarivanja. in Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications. 2018;:197-201.
doi:10.15308/Sinteza-2018-197-201 .

Popović, Olivera, Prokić-Cvetković, Radica, Milošević, Nenad, Jovičić, Radomir, "Uticaj zaštitne atmosfere i brzine dovođenja žice na stabilnost mig/mag postupka zavarivanja" in Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications (2018):197-201,
https://doi.org/10.15308/Sinteza-2018-197-201 . .

TY  - CONF
AU  - Jovičić, Radomir
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Cvetković, Dragan
AU  - Milošević, Nenad
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4269
AB  - Zavarivanje se široko primenjuje u industriji pri izradi različite opreme,
mostova, kranova, transportnih sredstava i sl. Ono ima odlučujući uticaj na
kvalitet, pouzdanost, vek i cenu izrade navedenih konstrukcija. Međutim,
kvalitet izvedenih zavarenih spojeva je teško ili je često gotovo nemoguće
utvrditi ispitivanjima na samim konstrukcijama. Zbog toga je potrebno
praćenje toka izrade zavarenih konstrukcija od ugovaranja i projektovanja,
preko kvalifikacije i sertifikacije osoblja i opreme, kvalifikacije procedura
zavarivanja i kontrole tokom i nakon završene izrade konstrukcije. Zahtevi za
kvalitet koje treba ispuniti u pojedinim fazama izrade konstrukcija definisani
su u standardima serije EN ISO 3834.
Odstupanja izvedenog kvaliteta zavarenih spojeva od potrebnog najčešće
nastaju u fazi zavarivanja. Do sada nije postojala mogućnost za kontinualno
praćenje, beleženje i skladištenje podataka o parametrima zavarivanja. U radu
je prikazan sistem zasnovan na informacionim tehnologijama, koji omogućava
prikupljanje i beleženje podataka o parametrima zavarivanja, upotrebljenim
materijalima i angažovanim zavarivačima, njihovo poređenje sa zadatim vrednostima i obustavljanje zavarivanja u slučajevima utvrđenih odstupanja. Na
taj način se znatno poboljšava kvalitet i pouzdanost zavarenih konstrukcija.
C3  - Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications
T1  - Upravljanje kvalitetom zavarenih konstrukcija pomoću informacionih tehnologija
EP  - 252
SP  - 248
DO  - 10.15308/Sinteza-2018-248-252
ER  - 

@conference{
author = "Jovičić, Radomir and Popović, Olivera and Prokić-Cvetković, Radica and Cvetković, Dragan and Milošević, Nenad",
year = "2018",
abstract = "Zavarivanje se široko primenjuje u industriji pri izradi različite opreme,
mostova, kranova, transportnih sredstava i sl. Ono ima odlučujući uticaj na
kvalitet, pouzdanost, vek i cenu izrade navedenih konstrukcija. Međutim,
kvalitet izvedenih zavarenih spojeva je teško ili je često gotovo nemoguće
utvrditi ispitivanjima na samim konstrukcijama. Zbog toga je potrebno
praćenje toka izrade zavarenih konstrukcija od ugovaranja i projektovanja,
preko kvalifikacije i sertifikacije osoblja i opreme, kvalifikacije procedura
zavarivanja i kontrole tokom i nakon završene izrade konstrukcije. Zahtevi za
kvalitet koje treba ispuniti u pojedinim fazama izrade konstrukcija definisani
su u standardima serije EN ISO 3834.
Odstupanja izvedenog kvaliteta zavarenih spojeva od potrebnog najčešće
nastaju u fazi zavarivanja. Do sada nije postojala mogućnost za kontinualno
praćenje, beleženje i skladištenje podataka o parametrima zavarivanja. U radu
je prikazan sistem zasnovan na informacionim tehnologijama, koji omogućava
prikupljanje i beleženje podataka o parametrima zavarivanja, upotrebljenim
materijalima i angažovanim zavarivačima, njihovo poređenje sa zadatim vrednostima i obustavljanje zavarivanja u slučajevima utvrđenih odstupanja. Na
taj način se znatno poboljšava kvalitet i pouzdanost zavarenih konstrukcija.",
journal = "Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications",
title = "Upravljanje kvalitetom zavarenih konstrukcija pomoću informacionih tehnologija",
pages = "252-248",
doi = "10.15308/Sinteza-2018-248-252"
}

Jovičić, R., Popović, O., Prokić-Cvetković, R., Cvetković, D.,& Milošević, N.. (2018). Upravljanje kvalitetom zavarenih konstrukcija pomoću informacionih tehnologija. in Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications, 248-252.
https://doi.org/10.15308/Sinteza-2018-248-252

Jovičić R, Popović O, Prokić-Cvetković R, Cvetković D, Milošević N. Upravljanje kvalitetom zavarenih konstrukcija pomoću informacionih tehnologija. in Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications. 2018;:248-252.
doi:10.15308/Sinteza-2018-248-252 .

Jovičić, Radomir, Popović, Olivera, Prokić-Cvetković, Radica, Cvetković, Dragan, Milošević, Nenad, "Upravljanje kvalitetom zavarenih konstrukcija pomoću informacionih tehnologija" in Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications (2018):248-252,
https://doi.org/10.15308/Sinteza-2018-248-252 . .

TY  - CONF
AU  - Jovičić, Radomir
AU  - Sedmak, Simon
AU  - Prokić-Cvetković, Radica
AU  - Popović, Olivera
AU  - Jovičić-Bubalo, Katarina
AU  - Milošević, Nenad
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2823
AB  - Welded joints represent locations where failure is most likely to occur in welded structures. Welded joint failure depends on their vulnerability to crack initiation and growth. These factors are significantly influenced by the welding technology. The effect of welding technology on the frequency of welded joint failure is complex, and has been thoroughly researched in literature. However, there are still numerous factors whose influence is not sufficiently explained. In this paper, the ratio of strength and plasticity of parent materials and weld metals on deformation properties of welded joint zones were analysed, along with the effects of groove edge temperature on cooling time in the heat affected zone and the effect of multiple defects on local stress increase.
PB  - Elsevier Science Bv, Amsterdam
C3  - Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity
T1  - Effects of welding technology on the occurrence of fracture in welded joints
EP  - 1688
SP  - 1682
VL  - 13
DO  - 10.1016/j.prostr.2018.12.351
ER  - 

@conference{
author = "Jovičić, Radomir and Sedmak, Simon and Prokić-Cvetković, Radica and Popović, Olivera and Jovičić-Bubalo, Katarina and Milošević, Nenad",
year = "2018",
abstract = "Welded joints represent locations where failure is most likely to occur in welded structures. Welded joint failure depends on their vulnerability to crack initiation and growth. These factors are significantly influenced by the welding technology. The effect of welding technology on the frequency of welded joint failure is complex, and has been thoroughly researched in literature. However, there are still numerous factors whose influence is not sufficiently explained. In this paper, the ratio of strength and plasticity of parent materials and weld metals on deformation properties of welded joint zones were analysed, along with the effects of groove edge temperature on cooling time in the heat affected zone and the effect of multiple defects on local stress increase.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity",
title = "Effects of welding technology on the occurrence of fracture in welded joints",
pages = "1688-1682",
volume = "13",
doi = "10.1016/j.prostr.2018.12.351"
}

Jovičić, R., Sedmak, S., Prokić-Cvetković, R., Popović, O., Jovičić-Bubalo, K.,& Milošević, N.. (2018). Effects of welding technology on the occurrence of fracture in welded joints. in Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity
Elsevier Science Bv, Amsterdam., 13, 1682-1688.
https://doi.org/10.1016/j.prostr.2018.12.351

Jovičić R, Sedmak S, Prokić-Cvetković R, Popović O, Jovičić-Bubalo K, Milošević N. Effects of welding technology on the occurrence of fracture in welded joints. in Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity. 2018;13:1682-1688.
doi:10.1016/j.prostr.2018.12.351 .

Jovičić, Radomir, Sedmak, Simon, Prokić-Cvetković, Radica, Popović, Olivera, Jovičić-Bubalo, Katarina, Milošević, Nenad, "Effects of welding technology on the occurrence of fracture in welded joints" in Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity, 13 (2018):1682-1688,
https://doi.org/10.1016/j.prostr.2018.12.351 . .

TY  - JOUR
AU  - Ratković, Nada
AU  - Lazić, Vukić
AU  - Arsić, Dušan
AU  - Nikolić, Ružica R.
AU  - Prokić-Cvetković, Radica
AU  - Popović, Olivera
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2840
AB  - Purpose - The purpose of this paper is to point out the possibilities for friction welding of dissimilar steels which are used in various industries. In addition, friction welding is a welding method that is applied for executing the very responsible joints. This research is focused on friction and tribological processes in the friction plane of the two pieces during the welding. Design/methodology/approach - The present study research has been conducted based on the experimental testing of cylindrical specimens and results are analyzed. Findings - The austenite grain size is affected by several factors through the friction process phase and the compacting phase during the welding. The very fine grain is the consequence of the high degree of the plastic deformation of the near-the-contact layers even in the friction phase. The viscous layer, which is formed during the stable friction phase, is the area where the moving of matter occurs according to a very complex mechanism. Originality/value - The paper contains useful results from the area of conventional friction welding of dissimilar steels and it can be very useful to researchers and engineers who deal with similar problems.
PB  - Emerald Group Publishing Ltd, Bingley
T2  - Industrial Lubrication and Tribology
T1  - Microstructure in the joining zone during the friction welding of the two dissimilar steels
EP  - 407
IS  - 2
SP  - 401
VL  - 70
DO  - 10.1108/ILT-08-2017-0234
ER  - 

@article{
author = "Ratković, Nada and Lazić, Vukić and Arsić, Dušan and Nikolić, Ružica R. and Prokić-Cvetković, Radica and Popović, Olivera",
year = "2018",
abstract = "Purpose - The purpose of this paper is to point out the possibilities for friction welding of dissimilar steels which are used in various industries. In addition, friction welding is a welding method that is applied for executing the very responsible joints. This research is focused on friction and tribological processes in the friction plane of the two pieces during the welding. Design/methodology/approach - The present study research has been conducted based on the experimental testing of cylindrical specimens and results are analyzed. Findings - The austenite grain size is affected by several factors through the friction process phase and the compacting phase during the welding. The very fine grain is the consequence of the high degree of the plastic deformation of the near-the-contact layers even in the friction phase. The viscous layer, which is formed during the stable friction phase, is the area where the moving of matter occurs according to a very complex mechanism. Originality/value - The paper contains useful results from the area of conventional friction welding of dissimilar steels and it can be very useful to researchers and engineers who deal with similar problems.",
publisher = "Emerald Group Publishing Ltd, Bingley",
journal = "Industrial Lubrication and Tribology",
title = "Microstructure in the joining zone during the friction welding of the two dissimilar steels",
pages = "407-401",
number = "2",
volume = "70",
doi = "10.1108/ILT-08-2017-0234"
}

Ratković, N., Lazić, V., Arsić, D., Nikolić, R. R., Prokić-Cvetković, R.,& Popović, O.. (2018). Microstructure in the joining zone during the friction welding of the two dissimilar steels. in Industrial Lubrication and Tribology
Emerald Group Publishing Ltd, Bingley., 70(2), 401-407.
https://doi.org/10.1108/ILT-08-2017-0234

Ratković N, Lazić V, Arsić D, Nikolić RR, Prokić-Cvetković R, Popović O. Microstructure in the joining zone during the friction welding of the two dissimilar steels. in Industrial Lubrication and Tribology. 2018;70(2):401-407.
doi:10.1108/ILT-08-2017-0234 .

Ratković, Nada, Lazić, Vukić, Arsić, Dušan, Nikolić, Ružica R., Prokić-Cvetković, Radica, Popović, Olivera, "Microstructure in the joining zone during the friction welding of the two dissimilar steels" in Industrial Lubrication and Tribology, 70, no. 2 (2018):401-407,
https://doi.org/10.1108/ILT-08-2017-0234 . .

TY  - CONF
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Radović, Ljubica
AU  - Burzić, Zijah
AU  - Arsić, D.
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2783
AB  - Surface welding is a way to extend the exploitation life of damaged parts and constructions and the heat input has a major influence on the weldment properties. In this paper is shown the influence of the heat input on the toughness and the fracture mechanism of the surface welded joint. Surface welding of high carbon steel with self shielded wire was conducted with three different heat inputs (6kJ/cm, 10 kJ/cm and 16 kJ/cm). Total impact energy, crack initiation and crack propagation energy were estimated at room temperature, -20 degrees C and -40 degrees C. Fracture analysis of fractured surfaces was also conducted and it has been found that increasing of heat input leads to an increase of share of transgranular brittle fracture, what is in complete accordance with the obtained energy values. Based on all obtained results, the optimum value of heat input for welding procedure applied was defined.
PB  - Elsevier Science Bv, Amsterdam
C3  - Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity
T1  - The influence of heat input on the toughness and fracture mechanism of surface weld metal
EP  - 2220
SP  - 2216
VL  - 13
DO  - 10.1016/j.prostr.2018.12.138
ER  - 

@conference{
author = "Popović, Olivera and Prokić-Cvetković, Radica and Radović, Ljubica and Burzić, Zijah and Arsić, D.",
year = "2018",
abstract = "Surface welding is a way to extend the exploitation life of damaged parts and constructions and the heat input has a major influence on the weldment properties. In this paper is shown the influence of the heat input on the toughness and the fracture mechanism of the surface welded joint. Surface welding of high carbon steel with self shielded wire was conducted with three different heat inputs (6kJ/cm, 10 kJ/cm and 16 kJ/cm). Total impact energy, crack initiation and crack propagation energy were estimated at room temperature, -20 degrees C and -40 degrees C. Fracture analysis of fractured surfaces was also conducted and it has been found that increasing of heat input leads to an increase of share of transgranular brittle fracture, what is in complete accordance with the obtained energy values. Based on all obtained results, the optimum value of heat input for welding procedure applied was defined.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity",
title = "The influence of heat input on the toughness and fracture mechanism of surface weld metal",
pages = "2220-2216",
volume = "13",
doi = "10.1016/j.prostr.2018.12.138"
}

Popović, O., Prokić-Cvetković, R., Radović, L., Burzić, Z.,& Arsić, D.. (2018). The influence of heat input on the toughness and fracture mechanism of surface weld metal. in Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity
Elsevier Science Bv, Amsterdam., 13, 2216-2220.
https://doi.org/10.1016/j.prostr.2018.12.138

Popović O, Prokić-Cvetković R, Radović L, Burzić Z, Arsić D. The influence of heat input on the toughness and fracture mechanism of surface weld metal. in Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity. 2018;13:2216-2220.
doi:10.1016/j.prostr.2018.12.138 .

Popović, Olivera, Prokić-Cvetković, Radica, Radović, Ljubica, Burzić, Zijah, Arsić, D., "The influence of heat input on the toughness and fracture mechanism of surface weld metal" in Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity, 13 (2018):2216-2220,
https://doi.org/10.1016/j.prostr.2018.12.138 . .

TY  - JOUR
AU  - Lazić, Vukić
AU  - Arsić, D.
AU  - Nikolić, R.R.
AU  - Đorđević, D.
AU  - Prokić-Cvetković, Radica
AU  - Popović, Olivera
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2733
AB  - The problems related to welding of the high strength steel, aimed for manufacturing of welded structures operating in the prominent wear conditions, is considered in this paper. The paper presents an analysis of possibilities and prescribing the technology for welding the high strength steel HARDOX 450. The methodology for estimate the weldability of this steel was established in the theoretical part of the paper, as well as calculations of the welding parameters, while the hardness was investigated in details and the macro and micro structures of the individual welded joint zones were estimated in the experimental part. Obtained experimental results could be usefully applied for selecting and establishing the optimal welding technology for structures made of this steel. The technology thus established and the GMAW welding regime can enable successful execution of the welded joints and reduce the possibility for appearance of flaws and cracks to a minimum.
PB  - Trans Tech Publications Ltd
T2  - Key Engineering Materials
T1  - Application of the high strength steel hardox 450 for manufacturing of assemblies in the military industry
EP  - 105
SP  - 96
VL  - 755
DO  - 10.4028/www.scientific.net/KEM.755.96
ER  - 

@article{
author = "Lazić, Vukić and Arsić, D. and Nikolić, R.R. and Đorđević, D. and Prokić-Cvetković, Radica and Popović, Olivera",
year = "2017",
abstract = "The problems related to welding of the high strength steel, aimed for manufacturing of welded structures operating in the prominent wear conditions, is considered in this paper. The paper presents an analysis of possibilities and prescribing the technology for welding the high strength steel HARDOX 450. The methodology for estimate the weldability of this steel was established in the theoretical part of the paper, as well as calculations of the welding parameters, while the hardness was investigated in details and the macro and micro structures of the individual welded joint zones were estimated in the experimental part. Obtained experimental results could be usefully applied for selecting and establishing the optimal welding technology for structures made of this steel. The technology thus established and the GMAW welding regime can enable successful execution of the welded joints and reduce the possibility for appearance of flaws and cracks to a minimum.",
publisher = "Trans Tech Publications Ltd",
journal = "Key Engineering Materials",
title = "Application of the high strength steel hardox 450 for manufacturing of assemblies in the military industry",
pages = "105-96",
volume = "755",
doi = "10.4028/www.scientific.net/KEM.755.96"
}

Lazić, V., Arsić, D., Nikolić, R.R., Đorđević, D., Prokić-Cvetković, R.,& Popović, O.. (2017). Application of the high strength steel hardox 450 for manufacturing of assemblies in the military industry. in Key Engineering Materials
Trans Tech Publications Ltd., 755, 96-105.
https://doi.org/10.4028/www.scientific.net/KEM.755.96

Lazić V, Arsić D, Nikolić R, Đorđević D, Prokić-Cvetković R, Popović O. Application of the high strength steel hardox 450 for manufacturing of assemblies in the military industry. in Key Engineering Materials. 2017;755:96-105.
doi:10.4028/www.scientific.net/KEM.755.96 .

Lazić, Vukić, Arsić, D., Nikolić, R.R., Đorđević, D., Prokić-Cvetković, Radica, Popović, Olivera, "Application of the high strength steel hardox 450 for manufacturing of assemblies in the military industry" in Key Engineering Materials, 755 (2017):96-105,
https://doi.org/10.4028/www.scientific.net/KEM.755.96 . .

TY  - JOUR
AU  - Jovičić, Radomir
AU  - Prokić-Cvetković, Radica
AU  - Popović, Olivera
AU  - Milošević, Nenad
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2264
AB  - Predgrevanjem čelika se smanjuje brzina hlađenja zone uticaja toplote, čime se izbegava pojava struktura sklonih nastanku hladnih prslina. Sa druge strane suviše mala brzina hlađenja, u ovoj zoni, dovodi do porasta metalnog zrna što, takođe, ima za posledicu povećanje skonosti ka nastanku prslina. Za izračunavanje temperatura predgrevanja čelika povišenih i visokih čvrstoća koriste se metode Itto - Bessyo i metoda data u standardu SRPS EN 1011-2. U radu su navedene metode primenjene na izračunavanje temperature predgrevanja mikrolegiranog čelika P460 NL1. Analiza rezultata proračuna po obe metode pokazuje značajne razlike u visini izračunatih temperatura predgrevanja. Zaključeno je da obe metode imaju ograničenja, koja se moraju imati u vidu pri njihovoj primeni u praksi.
AB  - With preheating of steel the cooling speed of a heat affected zone decreases, which prevents appearance of structure prone to cold cracks. On the other hand, too small cooling speed, in this area, results with growth the metal grains which, also, leads as to the higher prone to cracks. Common used method for calculation of preheating temperature for high strength steels ar Itto - Bessyo method, and method by standard SRPS EN 1011-2. This paper presents the methods for calculating the preheating temperature of micro aloyed steel P460 NL1. Analysis of the results obtained from both methods shows significant differences in the amounts calculated preheat temperature. It was concluded that both methods have limitations that must be taken into account in their application in practice.
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Metode za izračunavanje temperatura predgrevanja pri zavarivanju čelika povišene i visoke čvrstoće
T1  - Methods for calculating the preheat temperature welding the high strength steels
EP  - 119
IS  - 3
SP  - 113
VL  - 61
DO  - 10.5937/zzk1603113J
ER  - 

@article{
author = "Jovičić, Radomir and Prokić-Cvetković, Radica and Popović, Olivera and Milošević, Nenad",
year = "2016",
abstract = "Predgrevanjem čelika se smanjuje brzina hlađenja zone uticaja toplote, čime se izbegava pojava struktura sklonih nastanku hladnih prslina. Sa druge strane suviše mala brzina hlađenja, u ovoj zoni, dovodi do porasta metalnog zrna što, takođe, ima za posledicu povećanje skonosti ka nastanku prslina. Za izračunavanje temperatura predgrevanja čelika povišenih i visokih čvrstoća koriste se metode Itto - Bessyo i metoda data u standardu SRPS EN 1011-2. U radu su navedene metode primenjene na izračunavanje temperature predgrevanja mikrolegiranog čelika P460 NL1. Analiza rezultata proračuna po obe metode pokazuje značajne razlike u visini izračunatih temperatura predgrevanja. Zaključeno je da obe metode imaju ograničenja, koja se moraju imati u vidu pri njihovoj primeni u praksi., With preheating of steel the cooling speed of a heat affected zone decreases, which prevents appearance of structure prone to cold cracks. On the other hand, too small cooling speed, in this area, results with growth the metal grains which, also, leads as to the higher prone to cracks. Common used method for calculation of preheating temperature for high strength steels ar Itto - Bessyo method, and method by standard SRPS EN 1011-2. This paper presents the methods for calculating the preheating temperature of micro aloyed steel P460 NL1. Analysis of the results obtained from both methods shows significant differences in the amounts calculated preheat temperature. It was concluded that both methods have limitations that must be taken into account in their application in practice.",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Metode za izračunavanje temperatura predgrevanja pri zavarivanju čelika povišene i visoke čvrstoće, Methods for calculating the preheat temperature welding the high strength steels",
pages = "119-113",
number = "3",
volume = "61",
doi = "10.5937/zzk1603113J"
}

Jovičić, R., Prokić-Cvetković, R., Popović, O.,& Milošević, N.. (2016). Metode za izračunavanje temperatura predgrevanja pri zavarivanju čelika povišene i visoke čvrstoće. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 61(3), 113-119.
https://doi.org/10.5937/zzk1603113J

Jovičić R, Prokić-Cvetković R, Popović O, Milošević N. Metode za izračunavanje temperatura predgrevanja pri zavarivanju čelika povišene i visoke čvrstoće. in Zavarivanje i zavarene konstrukcije. 2016;61(3):113-119.
doi:10.5937/zzk1603113J .

Jovičić, Radomir, Prokić-Cvetković, Radica, Popović, Olivera, Milošević, Nenad, "Metode za izračunavanje temperatura predgrevanja pri zavarivanju čelika povišene i visoke čvrstoće" in Zavarivanje i zavarene konstrukcije, 61, no. 3 (2016):113-119,
https://doi.org/10.5937/zzk1603113J . .

TY  - JOUR
AU  - Prokić-Cvetković, Radica
AU  - Popović, Olivera
AU  - Kastelec-Macura, Sandra
AU  - Jovičić, Radomir
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2263
AB  - U ovom radu je prikazano kako vrsta zaštitne atmosfere utiče na zavarljivost legure aluminijuma AlMg4.5Mn. Pripremljene ploče su zavarene TIG postupkom u četiri različite zaštitne atmosfere. Posle izvedenog zavarivanja, urađena su metalografska ispitivanja, ispitivanje zatezne čvrstoće zavarenog spoja u celini, kao ispitivanje tvrdoće zavarenog spoja. Pokazano je kako vrsta zaštitne atmosfere utiče na oblik šava, dubinu uvarivanja, razlivanje dodatnog materijala, pojavu poroznosti u metalu šava, kao i na vrednosti zatezne čvrstoće i tvrdoće. Šavovi dobijeni zavarivanjem u zaštitnoj atmosferi Ar+50%He+0,015%N2 pokazali su najbolji izgled metala šava, pri čemu je dobro razlivanje dodatnog materijala a odnos širine i visine šava zadovoljavajući. Takođe je pokazano da ovako dobijeni šavovi imaju najmanju poroznost metala šava.
AB  - In this paper is shown the influence of gas shielding atmosphere on the weldability of AlMg4.5Mn alloy. Prepared plates were welded using tungsten inert gas (TIG) with four different shielding atmospheres. Metallographic testing, tensile testing and hardness testing of welded joints were carried out. It has been shown that composition of shielding atmosphere has effect on the weld appearance, depth of penetration, overflowing of filler material, porosity in the weld metal, as well as on values of tensile strength and hardness. Weldments obtained by welding in a shielding atmosphere Ar + 50% He + 0.015% N2 have the best appearance of the weld metal, good overflowing of filler material and satisfactory width to hight ratio. It was also established that these welds have the lowest weld metal porosity.
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Uticaj sastava zaštitne atmosfere na zavarljivost legure AIMg4.5Mn
T1  - Influence of gas shielding atmosphere on weldability of AIMg4.5Mn alloy
EP  - 12
IS  - 1
SP  - 5
VL  - 61
DO  - 10.5937/zzk1601005C
ER  - 

@article{
author = "Prokić-Cvetković, Radica and Popović, Olivera and Kastelec-Macura, Sandra and Jovičić, Radomir",
year = "2016",
abstract = "U ovom radu je prikazano kako vrsta zaštitne atmosfere utiče na zavarljivost legure aluminijuma AlMg4.5Mn. Pripremljene ploče su zavarene TIG postupkom u četiri različite zaštitne atmosfere. Posle izvedenog zavarivanja, urađena su metalografska ispitivanja, ispitivanje zatezne čvrstoće zavarenog spoja u celini, kao ispitivanje tvrdoće zavarenog spoja. Pokazano je kako vrsta zaštitne atmosfere utiče na oblik šava, dubinu uvarivanja, razlivanje dodatnog materijala, pojavu poroznosti u metalu šava, kao i na vrednosti zatezne čvrstoće i tvrdoće. Šavovi dobijeni zavarivanjem u zaštitnoj atmosferi Ar+50%He+0,015%N2 pokazali su najbolji izgled metala šava, pri čemu je dobro razlivanje dodatnog materijala a odnos širine i visine šava zadovoljavajući. Takođe je pokazano da ovako dobijeni šavovi imaju najmanju poroznost metala šava., In this paper is shown the influence of gas shielding atmosphere on the weldability of AlMg4.5Mn alloy. Prepared plates were welded using tungsten inert gas (TIG) with four different shielding atmospheres. Metallographic testing, tensile testing and hardness testing of welded joints were carried out. It has been shown that composition of shielding atmosphere has effect on the weld appearance, depth of penetration, overflowing of filler material, porosity in the weld metal, as well as on values of tensile strength and hardness. Weldments obtained by welding in a shielding atmosphere Ar + 50% He + 0.015% N2 have the best appearance of the weld metal, good overflowing of filler material and satisfactory width to hight ratio. It was also established that these welds have the lowest weld metal porosity.",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Uticaj sastava zaštitne atmosfere na zavarljivost legure AIMg4.5Mn, Influence of gas shielding atmosphere on weldability of AIMg4.5Mn alloy",
pages = "12-5",
number = "1",
volume = "61",
doi = "10.5937/zzk1601005C"
}

Prokić-Cvetković, R., Popović, O., Kastelec-Macura, S.,& Jovičić, R.. (2016). Uticaj sastava zaštitne atmosfere na zavarljivost legure AIMg4.5Mn. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 61(1), 5-12.
https://doi.org/10.5937/zzk1601005C

Prokić-Cvetković R, Popović O, Kastelec-Macura S, Jovičić R. Uticaj sastava zaštitne atmosfere na zavarljivost legure AIMg4.5Mn. in Zavarivanje i zavarene konstrukcije. 2016;61(1):5-12.
doi:10.5937/zzk1601005C .

Prokić-Cvetković, Radica, Popović, Olivera, Kastelec-Macura, Sandra, Jovičić, Radomir, "Uticaj sastava zaštitne atmosfere na zavarljivost legure AIMg4.5Mn" in Zavarivanje i zavarene konstrukcije, 61, no. 1 (2016):5-12,
https://doi.org/10.5937/zzk1601005C . .

TY  - CONF
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Milošević, Nenad
AU  - Cvetković, Dragan
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4268
AB  - It has been established that the ferrite structure occurring in different morphologic forms dominates in weld metal of microalloyed steel. Acicular ferrite is the most desirable morphology of ferrite, so this paper analyses influence of the composition of gas mixture on the ferrite modification in the weld metal, specially on the morphology of acicular ferrite. At the same time, this morphological form of ferrite is very significant, because it has great influence on the mechanical properties, especially toughness. Five different gas mixtures (Ar, CO2, O2) were used to determine the optimal gas shielded metal arc process. For investigated microalloyed steel, the optimum gas mixture has been established (5% CO2, 0.91% O2, balance Ar), providing maximum impact
energy due to microstructure, consisting predominately of acicular ferrite.
C3  - Sinteza 2016 - International Scientific Conference on ICT and E-Business Related Research : Advanced Engineering Systems
T1  - The effects of composition of shielding gas mixture on the microstructure and toughness of microalloyed steel weld metal
EP  - 229
SP  - 226
DO  - 10.15308/Sinteza-2016-226-229
ER  - 

@conference{
author = "Popović, Olivera and Prokić-Cvetković, Radica and Milošević, Nenad and Cvetković, Dragan",
year = "2016",
abstract = "It has been established that the ferrite structure occurring in different morphologic forms dominates in weld metal of microalloyed steel. Acicular ferrite is the most desirable morphology of ferrite, so this paper analyses influence of the composition of gas mixture on the ferrite modification in the weld metal, specially on the morphology of acicular ferrite. At the same time, this morphological form of ferrite is very significant, because it has great influence on the mechanical properties, especially toughness. Five different gas mixtures (Ar, CO2, O2) were used to determine the optimal gas shielded metal arc process. For investigated microalloyed steel, the optimum gas mixture has been established (5% CO2, 0.91% O2, balance Ar), providing maximum impact
energy due to microstructure, consisting predominately of acicular ferrite.",
journal = "Sinteza 2016 - International Scientific Conference on ICT and E-Business Related Research : Advanced Engineering Systems",
title = "The effects of composition of shielding gas mixture on the microstructure and toughness of microalloyed steel weld metal",
pages = "229-226",
doi = "10.15308/Sinteza-2016-226-229"
}

Popović, O., Prokić-Cvetković, R., Milošević, N.,& Cvetković, D.. (2016). The effects of composition of shielding gas mixture on the microstructure and toughness of microalloyed steel weld metal. in Sinteza 2016 - International Scientific Conference on ICT and E-Business Related Research : Advanced Engineering Systems, 226-229.
https://doi.org/10.15308/Sinteza-2016-226-229

Popović O, Prokić-Cvetković R, Milošević N, Cvetković D. The effects of composition of shielding gas mixture on the microstructure and toughness of microalloyed steel weld metal. in Sinteza 2016 - International Scientific Conference on ICT and E-Business Related Research : Advanced Engineering Systems. 2016;:226-229.
doi:10.15308/Sinteza-2016-226-229 .

Popović, Olivera, Prokić-Cvetković, Radica, Milošević, Nenad, Cvetković, Dragan, "The effects of composition of shielding gas mixture on the microstructure and toughness of microalloyed steel weld metal" in Sinteza 2016 - International Scientific Conference on ICT and E-Business Related Research : Advanced Engineering Systems (2016):226-229,
https://doi.org/10.15308/Sinteza-2016-226-229 . .

TY  - JOUR
AU  - Burzić, Meri
AU  - Manjgo, Mersida
AU  - Vuherer, Tomaž
AU  - Prokić-Cvetković, Radica
AU  - Popović, Olivera
AU  - Burzić, Zijah
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2074
AB  - Ocena sklonosti ka krtom lomu je analizirana ispitivanjem epruveta sa zamornom prslinom u simuliranoj zoni ZUT. Analizirano je kako heterogenost strukture i mehaničkih svojstava različitih zona ZUT, dobijenih simulacijom jednoprolaznog i dvoprolaznog ZUT utiče na pojavu i rast prslina, što omogućava da se kvantitativno izraze parametri koji kontrolišu lokalno deformacijsko ponašanje i rast prsline.
AB  - Susceptibility to brittle fracture has been analyzed by testing specimens precracked by fatigue in simulated HAZ region. It has been analyzed how the heterogeneity of microstructure and mechanical properties off different HAZ regions, obtained by simulation of one-pass and two-passes HAZ affects crack occurrence and growth, enabling to express quantitavely the parameters, controlling local deformation behaviour and crack growth.
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Sklonost ka krtom lomu simuliranog ZUT-a čelika povišene čvrstoće
EP  - 14
IS  - 1
SP  - 7
VL  - 60
DO  - 10.5937/zzk1501007B
ER  - 

@article{
author = "Burzić, Meri and Manjgo, Mersida and Vuherer, Tomaž and Prokić-Cvetković, Radica and Popović, Olivera and Burzić, Zijah",
year = "2015",
abstract = "Ocena sklonosti ka krtom lomu je analizirana ispitivanjem epruveta sa zamornom prslinom u simuliranoj zoni ZUT. Analizirano je kako heterogenost strukture i mehaničkih svojstava različitih zona ZUT, dobijenih simulacijom jednoprolaznog i dvoprolaznog ZUT utiče na pojavu i rast prslina, što omogućava da se kvantitativno izraze parametri koji kontrolišu lokalno deformacijsko ponašanje i rast prsline., Susceptibility to brittle fracture has been analyzed by testing specimens precracked by fatigue in simulated HAZ region. It has been analyzed how the heterogeneity of microstructure and mechanical properties off different HAZ regions, obtained by simulation of one-pass and two-passes HAZ affects crack occurrence and growth, enabling to express quantitavely the parameters, controlling local deformation behaviour and crack growth.",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Sklonost ka krtom lomu simuliranog ZUT-a čelika povišene čvrstoće",
pages = "14-7",
number = "1",
volume = "60",
doi = "10.5937/zzk1501007B"
}

Burzić, M., Manjgo, M., Vuherer, T., Prokić-Cvetković, R., Popović, O.,& Burzić, Z.. (2015). Sklonost ka krtom lomu simuliranog ZUT-a čelika povišene čvrstoće. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 60(1), 7-14.
https://doi.org/10.5937/zzk1501007B

Burzić M, Manjgo M, Vuherer T, Prokić-Cvetković R, Popović O, Burzić Z. Sklonost ka krtom lomu simuliranog ZUT-a čelika povišene čvrstoće. in Zavarivanje i zavarene konstrukcije. 2015;60(1):7-14.
doi:10.5937/zzk1501007B .

Burzić, Meri, Manjgo, Mersida, Vuherer, Tomaž, Prokić-Cvetković, Radica, Popović, Olivera, Burzić, Zijah, "Sklonost ka krtom lomu simuliranog ZUT-a čelika povišene čvrstoće" in Zavarivanje i zavarene konstrukcije, 60, no. 1 (2015):7-14,
https://doi.org/10.5937/zzk1501007B . .

TY  - JOUR
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Lukić, Uroš
AU  - Jovičić, Radomir
AU  - Burzić, Meri
AU  - Beljić, Biljana
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2071
AB  - Punjene i samozaštitne žice su dodatni materijali koji se poslednjih godina sve više koriste zbog povećane produktivnosti i ekonomičnosti, boljeg kvaliteta spoja i lakšeg rada na terenu. S druge strane, jedan od glavnih nedostataka ovih žica je povećana količina dimnih gasova i nedovoljna istraženost njihove štetnosti, naročito u slučaju samozaštitne žice. Zbog toga se pred nove generacije ovih žica postavlja i ekološki zahtev smanjenja emisije dimnih gasova radi zaštite kako zdravlja zavarivača, tako i okoline. U cilju istraživanja ovog uticaja, ploče čelika mikrolegiranog sa V, Nb i Ti su zavarene metalnom punjenom žicom u zaštitnoj atmosferi Ar+5.9%CO2+1.1%O2 i samozaštitnom žicom. Pri tome su izmerene vrednosti emisije gasova CO, CO2 i SO2, kao i ukupne prašine. Dobijene vrednosti su upoređene kako međusobno, tako i sa maksimalnim dozvoljenim koncentracijama prema važećem standardu. Utvrđeno je da samozaštitne žice, suprotno očekivanjima, ne pokazuju veću toksičnost u odnosu na metalne punjene žice.
AB  - The use of flux cored and self-shielded wires as filler materials for gas metal arc welding is growing constantly due to increased productivity and efficiency, better weld quality and easer operation. On the other hand, one of the major drawbacks of these wires is the increased amount of fumes and gases and insufficient data of their harmful effects, especially in the case of self shielded wire. Therefore, in now days, one of the most important requirements is environmentally and health request for decreased fume and gas emission. In this paper, the plates of steel micro alloyed with V, Nb and Ti, were welded with metal cored wire in shielded atmosphere of Ar+5.9%CO2+1.1%O2 and with self-shielded wire. The concentrations of emitted total dust and gases CO, CO2 and SO2 were measured. Obtained values were compared with permissible exposure limits defined by standard. It was estimated that self shielded wire did not show higher toxicity compare to metal cored wire, what is in the contrast with previous studies.
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Emisija dimnih gasova pri zavarivanju metalnom punjenom i samozaštitnom žicom
T1  - Gas emission during welding with metal cored and self-shielded wire
EP  - 20
IS  - 1
SP  - 15
VL  - 60
DO  - 10.5937/zzk1501015P
ER  - 

@article{
author = "Popović, Olivera and Prokić-Cvetković, Radica and Lukić, Uroš and Jovičić, Radomir and Burzić, Meri and Beljić, Biljana",
year = "2015",
abstract = "Punjene i samozaštitne žice su dodatni materijali koji se poslednjih godina sve više koriste zbog povećane produktivnosti i ekonomičnosti, boljeg kvaliteta spoja i lakšeg rada na terenu. S druge strane, jedan od glavnih nedostataka ovih žica je povećana količina dimnih gasova i nedovoljna istraženost njihove štetnosti, naročito u slučaju samozaštitne žice. Zbog toga se pred nove generacije ovih žica postavlja i ekološki zahtev smanjenja emisije dimnih gasova radi zaštite kako zdravlja zavarivača, tako i okoline. U cilju istraživanja ovog uticaja, ploče čelika mikrolegiranog sa V, Nb i Ti su zavarene metalnom punjenom žicom u zaštitnoj atmosferi Ar+5.9%CO2+1.1%O2 i samozaštitnom žicom. Pri tome su izmerene vrednosti emisije gasova CO, CO2 i SO2, kao i ukupne prašine. Dobijene vrednosti su upoređene kako međusobno, tako i sa maksimalnim dozvoljenim koncentracijama prema važećem standardu. Utvrđeno je da samozaštitne žice, suprotno očekivanjima, ne pokazuju veću toksičnost u odnosu na metalne punjene žice., The use of flux cored and self-shielded wires as filler materials for gas metal arc welding is growing constantly due to increased productivity and efficiency, better weld quality and easer operation. On the other hand, one of the major drawbacks of these wires is the increased amount of fumes and gases and insufficient data of their harmful effects, especially in the case of self shielded wire. Therefore, in now days, one of the most important requirements is environmentally and health request for decreased fume and gas emission. In this paper, the plates of steel micro alloyed with V, Nb and Ti, were welded with metal cored wire in shielded atmosphere of Ar+5.9%CO2+1.1%O2 and with self-shielded wire. The concentrations of emitted total dust and gases CO, CO2 and SO2 were measured. Obtained values were compared with permissible exposure limits defined by standard. It was estimated that self shielded wire did not show higher toxicity compare to metal cored wire, what is in the contrast with previous studies.",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Emisija dimnih gasova pri zavarivanju metalnom punjenom i samozaštitnom žicom, Gas emission during welding with metal cored and self-shielded wire",
pages = "20-15",
number = "1",
volume = "60",
doi = "10.5937/zzk1501015P"
}

Popović, O., Prokić-Cvetković, R., Lukić, U., Jovičić, R., Burzić, M.,& Beljić, B.. (2015). Emisija dimnih gasova pri zavarivanju metalnom punjenom i samozaštitnom žicom. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 60(1), 15-20.
https://doi.org/10.5937/zzk1501015P

Popović O, Prokić-Cvetković R, Lukić U, Jovičić R, Burzić M, Beljić B. Emisija dimnih gasova pri zavarivanju metalnom punjenom i samozaštitnom žicom. in Zavarivanje i zavarene konstrukcije. 2015;60(1):15-20.
doi:10.5937/zzk1501015P .

Popović, Olivera, Prokić-Cvetković, Radica, Lukić, Uroš, Jovičić, Radomir, Burzić, Meri, Beljić, Biljana, "Emisija dimnih gasova pri zavarivanju metalnom punjenom i samozaštitnom žicom" in Zavarivanje i zavarene konstrukcije, 60, no. 1 (2015):15-20,
https://doi.org/10.5937/zzk1501015P . .

TY  - CONF
AU  - Lukić, Uroš
AU  - Prokić Cvetković, Radica
AU  - Popović, Olivera
AU  - Rajičić, Bratislav
AU  - Jovičić, Radomir
AU  - Burzić, Meri
PY  - 2014
UR  - http://tmt.unze.ba/zbornik/TMT2014/TMT2014_104.pdf
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5514
AB  - The stability of the welding process has a significant impact on the assurance of the required level of quality of welded joints. The increasing stability of the welding process reduces the probability of forming imperfections in the weld metal. The statistical analysis of the data obtained by monitoring the welding parameters in real-time was performed.This paper presents the results of the analysis of the impact of the parameters on the stability of gas metal arc welding process when the metal-cored electrode wire is used.
PB  - Faculty of Mechanical Engineering in Zenica, University of Zenica, B&H; Bahcesehir University Istanbul, Muhendislik Fakultesi, Turkey; Escola Tecnica Superior D, Budapest, Hungary
C3  - Proceedings of 18th International Research/Expert Conference - ”Trends in the Development of Machinery and Associated Technology” TMT 2014
T1  - Impact Of Welding Parameters On The Stability Of Gas Metal Arc Welding Process
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5514
ER  - 

@conference{
author = "Lukić, Uroš and Prokić Cvetković, Radica and Popović, Olivera and Rajičić, Bratislav and Jovičić, Radomir and Burzić, Meri",
year = "2014",
abstract = "The stability of the welding process has a significant impact on the assurance of the required level of quality of welded joints. The increasing stability of the welding process reduces the probability of forming imperfections in the weld metal. The statistical analysis of the data obtained by monitoring the welding parameters in real-time was performed.This paper presents the results of the analysis of the impact of the parameters on the stability of gas metal arc welding process when the metal-cored electrode wire is used.",
publisher = "Faculty of Mechanical Engineering in Zenica, University of Zenica, B&H; Bahcesehir University Istanbul, Muhendislik Fakultesi, Turkey; Escola Tecnica Superior D, Budapest, Hungary",
journal = "Proceedings of 18th International Research/Expert Conference - ”Trends in the Development of Machinery and Associated Technology” TMT 2014",
title = "Impact Of Welding Parameters On The Stability Of Gas Metal Arc Welding Process",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5514"
}

Lukić, U., Prokić Cvetković, R., Popović, O., Rajičić, B., Jovičić, R.,& Burzić, M.. (2014). Impact Of Welding Parameters On The Stability Of Gas Metal Arc Welding Process. in Proceedings of 18th International Research/Expert Conference - ”Trends in the Development of Machinery and Associated Technology” TMT 2014
Faculty of Mechanical Engineering in Zenica, University of Zenica, B&H; Bahcesehir University Istanbul, Muhendislik Fakultesi, Turkey; Escola Tecnica Superior D, Budapest, Hungary..
https://hdl.handle.net/21.15107/rcub_machinery_5514

Lukić U, Prokić Cvetković R, Popović O, Rajičić B, Jovičić R, Burzić M. Impact Of Welding Parameters On The Stability Of Gas Metal Arc Welding Process. in Proceedings of 18th International Research/Expert Conference - ”Trends in the Development of Machinery and Associated Technology” TMT 2014. 2014;.
https://hdl.handle.net/21.15107/rcub_machinery_5514 .

Lukić, Uroš, Prokić Cvetković, Radica, Popović, Olivera, Rajičić, Bratislav, Jovičić, Radomir, Burzić, Meri, "Impact Of Welding Parameters On The Stability Of Gas Metal Arc Welding Process" in Proceedings of 18th International Research/Expert Conference - ”Trends in the Development of Machinery and Associated Technology” TMT 2014 (2014),
https://hdl.handle.net/21.15107/rcub_machinery_5514 .

TY  - JOUR
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Burzić, Meri
AU  - Lukić, Uroš
AU  - Bejić, Biljana
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1922
AB  - Welding is the principal industrial process used for joining metals, but at the same time, it's the significant source of toxic fumes and gases emission. With the advent of new types of welding procedures and consumables, the number of welders exposed to welding fumes is growing constantly in spite of the mechanisation and automation of the process. Having in mind that, in some cases, toxic fumes and gases can be over the respective limits for toxic substances, one of the most important requirements for chosen welding procedure is its harmlessness to the environment. The health aspects associated with welding are complex and the industry is continuing its research to evaluate the effects of the welder's exposure to typical constituents of welding fumes and gases, as well as its impact on what concerns climatic changes. The aim of this paper is to estimate the influence of the type of filler material on the emission of toxic substances, and to show the potential hazards. In order to determine that effect, microalloyed steel has been welded using two different filler materials (metal cored wire and self-shielded wire). The concentrations of emitted total dust, CO2, CO, SO, Mn, Ni, Al, Cr, Cr(VI), Ca and P were measured. By comparing results for both filler materials, it was established that the special attention must be paid to the high concentration of manganese and CO in metal cored wire, as well as high concentrations of phosphorus and aluminum in self-shielded wire. Also, conducted experimental measurements of emission of certain elements did not show higher toxicity of self-shielded wire compare to metal cored wire, what is in the contrast with previous studies.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Renewable & Sustainable Energy Reviews
T1  - Fume and gas emission during arc welding: Hazards and recommendation
EP  - 516
SP  - 509
VL  - 37
DO  - 10.1016/j.rser.2014.05.076
ER  - 

@article{
author = "Popović, Olivera and Prokić-Cvetković, Radica and Burzić, Meri and Lukić, Uroš and Bejić, Biljana",
year = "2014",
abstract = "Welding is the principal industrial process used for joining metals, but at the same time, it's the significant source of toxic fumes and gases emission. With the advent of new types of welding procedures and consumables, the number of welders exposed to welding fumes is growing constantly in spite of the mechanisation and automation of the process. Having in mind that, in some cases, toxic fumes and gases can be over the respective limits for toxic substances, one of the most important requirements for chosen welding procedure is its harmlessness to the environment. The health aspects associated with welding are complex and the industry is continuing its research to evaluate the effects of the welder's exposure to typical constituents of welding fumes and gases, as well as its impact on what concerns climatic changes. The aim of this paper is to estimate the influence of the type of filler material on the emission of toxic substances, and to show the potential hazards. In order to determine that effect, microalloyed steel has been welded using two different filler materials (metal cored wire and self-shielded wire). The concentrations of emitted total dust, CO2, CO, SO, Mn, Ni, Al, Cr, Cr(VI), Ca and P were measured. By comparing results for both filler materials, it was established that the special attention must be paid to the high concentration of manganese and CO in metal cored wire, as well as high concentrations of phosphorus and aluminum in self-shielded wire. Also, conducted experimental measurements of emission of certain elements did not show higher toxicity of self-shielded wire compare to metal cored wire, what is in the contrast with previous studies.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Renewable & Sustainable Energy Reviews",
title = "Fume and gas emission during arc welding: Hazards and recommendation",
pages = "516-509",
volume = "37",
doi = "10.1016/j.rser.2014.05.076"
}

Popović, O., Prokić-Cvetković, R., Burzić, M., Lukić, U.,& Bejić, B.. (2014). Fume and gas emission during arc welding: Hazards and recommendation. in Renewable & Sustainable Energy Reviews
Pergamon-Elsevier Science Ltd, Oxford., 37, 509-516.
https://doi.org/10.1016/j.rser.2014.05.076

Popović O, Prokić-Cvetković R, Burzić M, Lukić U, Bejić B. Fume and gas emission during arc welding: Hazards and recommendation. in Renewable & Sustainable Energy Reviews. 2014;37:509-516.
doi:10.1016/j.rser.2014.05.076 .

Popović, Olivera, Prokić-Cvetković, Radica, Burzić, Meri, Lukić, Uroš, Bejić, Biljana, "Fume and gas emission during arc welding: Hazards and recommendation" in Renewable & Sustainable Energy Reviews, 37 (2014):509-516,
https://doi.org/10.1016/j.rser.2014.05.076 . .

TY  - JOUR
AU  - Burzić, Meri
AU  - Prokić-Cvetković, Radica
AU  - Popović, Olivera
AU  - Burzić, Zijah
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1845
AB  - Radi potpunijeg razumevanja uzroka i načina pojave i rasta prslina u zavarenim spojevima čelika A-387 Gr.11 predviđenog za rad u uslovima povišene temperature i pritiska, potrebno je da se utvrdi kako heterogenost strukture i mehaničkih svojstava zavarenog spoja, utiče na žilavost loma i pojavu i rast zamorne prsline. Ispitivanjem CT i Šarpi epruveta sa iniciranom zamornom prslinom data je ocena kako heterogenost strukture i mehaničkih svojstava zavarenog spoja utiču na parametre žilavosti loma i brzinu rasta zamorne prsline.
AB  - For better understanding of the phenomenon of crack initiation and propagation in welded joints of A-387 Gr. 11 steel designed for high-temperature and high-pressure applications, it is necessary to determine the effect of the heterogeneity of microstructural and mechanical properties on fracture toughness and fatigue crack initiation and propagation. Based on the tests conducted with pre-cracked CT and Charpy size specimens, the effect of the heterogeneity of the microstructural and mechanical properties of welded joints on fracture toughness and fatigue-crack growth parameters was determined.
PB  - Vojnotehnički institut, Beograd
T2  - Scientific Technical Review
T1  - Uticaj heterogenosti strukture na parametre mehanike loma zavarenog spoja čelika A387
T1  - Effect of structural heterogeneity on the fracture mechanics parameters of welded joints of A.387 steel
EP  - 44
IS  - 4
SP  - 39
VL  - 64
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1845
ER  - 

@article{
author = "Burzić, Meri and Prokić-Cvetković, Radica and Popović, Olivera and Burzić, Zijah",
year = "2014",
abstract = "Radi potpunijeg razumevanja uzroka i načina pojave i rasta prslina u zavarenim spojevima čelika A-387 Gr.11 predviđenog za rad u uslovima povišene temperature i pritiska, potrebno je da se utvrdi kako heterogenost strukture i mehaničkih svojstava zavarenog spoja, utiče na žilavost loma i pojavu i rast zamorne prsline. Ispitivanjem CT i Šarpi epruveta sa iniciranom zamornom prslinom data je ocena kako heterogenost strukture i mehaničkih svojstava zavarenog spoja utiču na parametre žilavosti loma i brzinu rasta zamorne prsline., For better understanding of the phenomenon of crack initiation and propagation in welded joints of A-387 Gr. 11 steel designed for high-temperature and high-pressure applications, it is necessary to determine the effect of the heterogeneity of microstructural and mechanical properties on fracture toughness and fatigue crack initiation and propagation. Based on the tests conducted with pre-cracked CT and Charpy size specimens, the effect of the heterogeneity of the microstructural and mechanical properties of welded joints on fracture toughness and fatigue-crack growth parameters was determined.",
publisher = "Vojnotehnički institut, Beograd",
journal = "Scientific Technical Review",
title = "Uticaj heterogenosti strukture na parametre mehanike loma zavarenog spoja čelika A387, Effect of structural heterogeneity on the fracture mechanics parameters of welded joints of A.387 steel",
pages = "44-39",
number = "4",
volume = "64",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1845"
}

Burzić, M., Prokić-Cvetković, R., Popović, O.,& Burzić, Z.. (2014). Uticaj heterogenosti strukture na parametre mehanike loma zavarenog spoja čelika A387. in Scientific Technical Review
Vojnotehnički institut, Beograd., 64(4), 39-44.
https://hdl.handle.net/21.15107/rcub_machinery_1845

Burzić M, Prokić-Cvetković R, Popović O, Burzić Z. Uticaj heterogenosti strukture na parametre mehanike loma zavarenog spoja čelika A387. in Scientific Technical Review. 2014;64(4):39-44.
https://hdl.handle.net/21.15107/rcub_machinery_1845 .

Burzić, Meri, Prokić-Cvetković, Radica, Popović, Olivera, Burzić, Zijah, "Uticaj heterogenosti strukture na parametre mehanike loma zavarenog spoja čelika A387" in Scientific Technical Review, 64, no. 4 (2014):39-44,
https://hdl.handle.net/21.15107/rcub_machinery_1845 .

TY  - JOUR
AU  - Burzić, Meri
AU  - Manjgo, Mersida
AU  - Kozak, Dražan
AU  - Prokić-Cvetković, Radica
AU  - Popović, Olivera
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1732
AB  - The in-service behaviour of alloyed steel A-387 Gr. 11 Class 1, for pressure vessels, used for high temperature applications, depends on the properties of its welded joint, with parent metal (BM), heat-affected-zone (HAZ) and weld metal (WM), as constituents. Charpy testing of BM, WM and HAZ, together with, determination of the parameters of fatigue-crack growth and fatigue threshold Delta Kth was used, in order to understand, how heterogeneity of structure and different mechanical properties of welded joint constituents affect on crack initiation and propagation.
PB  - Croatian Metallurgical Society
T2  - Metalurgija
T1  - The effects of dynamic load on behaviour of welded joint a-387 gr. 11 alloyed steel
EP  - 31
IS  - 1
SP  - 27
VL  - 52
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1732
ER  - 

@article{
author = "Burzić, Meri and Manjgo, Mersida and Kozak, Dražan and Prokić-Cvetković, Radica and Popović, Olivera",
year = "2013",
abstract = "The in-service behaviour of alloyed steel A-387 Gr. 11 Class 1, for pressure vessels, used for high temperature applications, depends on the properties of its welded joint, with parent metal (BM), heat-affected-zone (HAZ) and weld metal (WM), as constituents. Charpy testing of BM, WM and HAZ, together with, determination of the parameters of fatigue-crack growth and fatigue threshold Delta Kth was used, in order to understand, how heterogeneity of structure and different mechanical properties of welded joint constituents affect on crack initiation and propagation.",
publisher = "Croatian Metallurgical Society",
journal = "Metalurgija",
title = "The effects of dynamic load on behaviour of welded joint a-387 gr. 11 alloyed steel",
pages = "31-27",
number = "1",
volume = "52",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1732"
}

Burzić, M., Manjgo, M., Kozak, D., Prokić-Cvetković, R.,& Popović, O.. (2013). The effects of dynamic load on behaviour of welded joint a-387 gr. 11 alloyed steel. in Metalurgija
Croatian Metallurgical Society., 52(1), 27-31.
https://hdl.handle.net/21.15107/rcub_machinery_1732

Burzić M, Manjgo M, Kozak D, Prokić-Cvetković R, Popović O. The effects of dynamic load on behaviour of welded joint a-387 gr. 11 alloyed steel. in Metalurgija. 2013;52(1):27-31.
https://hdl.handle.net/21.15107/rcub_machinery_1732 .

Burzić, Meri, Manjgo, Mersida, Kozak, Dražan, Prokić-Cvetković, Radica, Popović, Olivera, "The effects of dynamic load on behaviour of welded joint a-387 gr. 11 alloyed steel" in Metalurgija, 52, no. 1 (2013):27-31,
https://hdl.handle.net/21.15107/rcub_machinery_1732 .