TY  - JOUR
AU  - Marković, Svetislav
AU  - Milović, Ljubica
AU  - Vrhovac, Miran
AU  - Lazović, Tatjana
AU  - Marinković, Aleksandar
AU  - Aleksić, Vujadin
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2272
AB  - This paper contains the results of experimental analysis of fatigue endurance of used steel teeth regenerated by hard facing. The cylindrical spur gears were tested and compared with the newly made ones, oiler being regenerated by hard facing with subsequent cementation and quenching. The fatigue testing wider variable amplitude loading was used to determine the duration of operational life through measurement of wear. The obtained results demonstrated the impact of hard facing methods on gear endurance in operation. In the test on regenerated gears it was discovered that initial pits appeared almost simultaneously for different facing materials and a bit earlier than in tests on newly made ones, despite their considerably higher pitting rate. Apart from that, the tested operational lives of regenerated and newly-made gears were approximately equal and much longer than predicted.
PB  - Editura Stiintifica Fmr, Bucharest
T2  - Metalurgia International
T1  - Life extension of gears flank surfaces regenerated by hard facing
EP  - 85
IS  - 2
SP  - 81
VL  - 18
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2272
ER  - 

@article{
author = "Marković, Svetislav and Milović, Ljubica and Vrhovac, Miran and Lazović, Tatjana and Marinković, Aleksandar and Aleksić, Vujadin",
year = "2013",
abstract = "This paper contains the results of experimental analysis of fatigue endurance of used steel teeth regenerated by hard facing. The cylindrical spur gears were tested and compared with the newly made ones, oiler being regenerated by hard facing with subsequent cementation and quenching. The fatigue testing wider variable amplitude loading was used to determine the duration of operational life through measurement of wear. The obtained results demonstrated the impact of hard facing methods on gear endurance in operation. In the test on regenerated gears it was discovered that initial pits appeared almost simultaneously for different facing materials and a bit earlier than in tests on newly made ones, despite their considerably higher pitting rate. Apart from that, the tested operational lives of regenerated and newly-made gears were approximately equal and much longer than predicted.",
publisher = "Editura Stiintifica Fmr, Bucharest",
journal = "Metalurgia International",
title = "Life extension of gears flank surfaces regenerated by hard facing",
pages = "85-81",
number = "2",
volume = "18",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2272"
}

Marković, S., Milović, L., Vrhovac, M., Lazović, T., Marinković, A.,& Aleksić, V.. (2013). Life extension of gears flank surfaces regenerated by hard facing. in Metalurgia International
Editura Stiintifica Fmr, Bucharest., 18(2), 81-85.
https://hdl.handle.net/21.15107/rcub_technorep_2272

Marković S, Milović L, Vrhovac M, Lazović T, Marinković A, Aleksić V. Life extension of gears flank surfaces regenerated by hard facing. in Metalurgia International. 2013;18(2):81-85.
https://hdl.handle.net/21.15107/rcub_technorep_2272 .

Marković, Svetislav, Milović, Ljubica, Vrhovac, Miran, Lazović, Tatjana, Marinković, Aleksandar, Aleksić, Vujadin, "Life extension of gears flank surfaces regenerated by hard facing" in Metalurgia International, 18, no. 2 (2013):81-85,
https://hdl.handle.net/21.15107/rcub_technorep_2272 .

TY  - JOUR
AU  - Milović, Ljubica
AU  - Bulatović, Srđan
AU  - Aleksić, Vujadin
AU  - Radaković, Zoran
AU  - Marković, Svetislav
AU  - Sedmak, Stojan
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2050
AB  - From a fracture mechanics point of view on welded joints, it is assumed that the welded joint is pre-cracked such as that the fatigue life of the pre-cracked structure is then determined by the period of crack growth under variable load. Experimental data obtained by testing provide a substantial basis for a better understanding and an explanation of the phenomenon of material fatigue. Low cycle fatigue (LCF) occurs during the process of charging and discharging of reactors, pressure vessels and pipelines; the fatigue can be accelerated by an additional negative effect of temperature variation and the aggressive effect of the media contained inside the vessel, and during the exploitation of the equipment in the processing industry. In the present paper the results are presented of J-integral measurements at LCF of a low-alloyed high strength steel (HSLA) weld metal used in the submerged arc welding process in the manufacture of pressure vessels.
AB  - U zavarenim spojevima, sa gledišta mehanike loma, se pretpostavlja prisustvo prslina, gde se onda vek s obzirom na zamor takvih konstrukcija sa prslinama procenjuje vremenom rasta prsline pod promenljivim opterećenjem. Eksperimentalni podaci dobijeni ispitivanjem pružaju značajnu osnovu za bolje razumevanje i objašnjenje fenomena zamora materijala. Niskociklični zamor (LCF) se javlja u procesu punjenja i pražnjenja reaktora, posuda pod pritiskom i cevovoda; proces zamora može ubrzati dodatni negativan efekat promene temperature i efekat agresivne sredine sadržane u posudi, kao i tokom perioda eksploatacije opreme u procesnoj industriji. U ovom radu prikazani su rezultati merenja J integrala pri niskocikličnom zamoru (LCF) metala šava niskolegiranog čelika povišene čvrstoće (HSLA), koji se koristi u proizvodnji posuda pod pritiskom postupkom zavarivanja pod praškom.
PB  - Society for Structural Integrity and Life, Institute for Material Testing
T2  - Integritet i vek konstrukcija
T1  - Assessment of the behaviour of fatigue loaded HSLA steel welded joint by applying fracture mechanics parameters
T1  - Procena ponašanja zavarenog spoja HSLA čelika opterećenog na zamor primenom parametara mehanike loma
EP  - 179
IS  - 3
SP  - 175
VL  - 12
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2050
ER  - 

@article{
author = "Milović, Ljubica and Bulatović, Srđan and Aleksić, Vujadin and Radaković, Zoran and Marković, Svetislav and Sedmak, Stojan",
year = "2012",
abstract = "From a fracture mechanics point of view on welded joints, it is assumed that the welded joint is pre-cracked such as that the fatigue life of the pre-cracked structure is then determined by the period of crack growth under variable load. Experimental data obtained by testing provide a substantial basis for a better understanding and an explanation of the phenomenon of material fatigue. Low cycle fatigue (LCF) occurs during the process of charging and discharging of reactors, pressure vessels and pipelines; the fatigue can be accelerated by an additional negative effect of temperature variation and the aggressive effect of the media contained inside the vessel, and during the exploitation of the equipment in the processing industry. In the present paper the results are presented of J-integral measurements at LCF of a low-alloyed high strength steel (HSLA) weld metal used in the submerged arc welding process in the manufacture of pressure vessels., U zavarenim spojevima, sa gledišta mehanike loma, se pretpostavlja prisustvo prslina, gde se onda vek s obzirom na zamor takvih konstrukcija sa prslinama procenjuje vremenom rasta prsline pod promenljivim opterećenjem. Eksperimentalni podaci dobijeni ispitivanjem pružaju značajnu osnovu za bolje razumevanje i objašnjenje fenomena zamora materijala. Niskociklični zamor (LCF) se javlja u procesu punjenja i pražnjenja reaktora, posuda pod pritiskom i cevovoda; proces zamora može ubrzati dodatni negativan efekat promene temperature i efekat agresivne sredine sadržane u posudi, kao i tokom perioda eksploatacije opreme u procesnoj industriji. U ovom radu prikazani su rezultati merenja J integrala pri niskocikličnom zamoru (LCF) metala šava niskolegiranog čelika povišene čvrstoće (HSLA), koji se koristi u proizvodnji posuda pod pritiskom postupkom zavarivanja pod praškom.",
publisher = "Society for Structural Integrity and Life, Institute for Material Testing",
journal = "Integritet i vek konstrukcija",
title = "Assessment of the behaviour of fatigue loaded HSLA steel welded joint by applying fracture mechanics parameters, Procena ponašanja zavarenog spoja HSLA čelika opterećenog na zamor primenom parametara mehanike loma",
pages = "179-175",
number = "3",
volume = "12",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2050"
}

Milović, L., Bulatović, S., Aleksić, V., Radaković, Z., Marković, S.,& Sedmak, S.. (2012). Assessment of the behaviour of fatigue loaded HSLA steel welded joint by applying fracture mechanics parameters. in Integritet i vek konstrukcija
Society for Structural Integrity and Life, Institute for Material Testing., 12(3), 175-179.
https://hdl.handle.net/21.15107/rcub_technorep_2050

Milović L, Bulatović S, Aleksić V, Radaković Z, Marković S, Sedmak S. Assessment of the behaviour of fatigue loaded HSLA steel welded joint by applying fracture mechanics parameters. in Integritet i vek konstrukcija. 2012;12(3):175-179.
https://hdl.handle.net/21.15107/rcub_technorep_2050 .

Milović, Ljubica, Bulatović, Srđan, Aleksić, Vujadin, Radaković, Zoran, Marković, Svetislav, Sedmak, Stojan, "Assessment of the behaviour of fatigue loaded HSLA steel welded joint by applying fracture mechanics parameters" in Integritet i vek konstrukcija, 12, no. 3 (2012):175-179,
https://hdl.handle.net/21.15107/rcub_technorep_2050 .

TY  - JOUR
AU  - Marković, Svetislav
AU  - Milović, Ljubica
AU  - Marinković, Aleksandar
AU  - Lazović, Tatjana
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1843
AB  - Analysis of repaired gears made of case-hardening steel 20MnCr5 by hardfacing method is presented in this paper. Hardfacing repaired gears are tested on the closed power circuit device with variation of the torque value. During testing the wear intensity is measured and the gears' working life is predicted. Samples made of the same material as the gear are tested on tribometer of the 'block-on-disc' type. The gears are repaired in two ways: (1) by hardfacing with filler metal, which is subsequently case-hardened and heat-treated and then mechanically machined, and (2) by hardfacing with filler metal of high hardness (≈ 60 HRC).
AB  - U radu je predstavljena analiza zupčanika izrađenih od čelika za cementaciju 20MnCr5 koji je repariran tvrdim navarivanjem. Zupčanici reparirani tvrdim navarivanjem su ispitivani na uređaju sa zatvorenim strujnim kolom sa varijacijom veličine prenosnog momenta. Tokom ispitivanja, izmeren je intenzitet habanja i procenjen je radni vek zupčanika. Uzorci napravljeni od istog materijala kao zupčanik su ispitivani na tribometru tipa 'blok-na-disku'. Zupčanici su reparirani na dva načina: (1) putem tvrdog navarivanja dodatnim materijalom, koji je onda termohemijski i termički obrađen a zatim obrađen mašinski, a (2) putem tvrdog navarivanja sa dodatnim materijalom visoke tvrdoće (≈ 60 HRC).
PB  - Society for Structural Integrity and Life, Institute for Material Testing
T2  - Integritet i vek konstrukcija
T1  - Tribological aspect of selecting filler metal for repair surfacing of gears by hardfacing
T1  - Tribološki aspekti izbora dodatnog materijala kod površinske reparacije zupčanika tvrdim navarivanjem
EP  - 130
IS  - 2
SP  - 127
VL  - 11
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1843
ER  - 

@article{
author = "Marković, Svetislav and Milović, Ljubica and Marinković, Aleksandar and Lazović, Tatjana",
year = "2011",
abstract = "Analysis of repaired gears made of case-hardening steel 20MnCr5 by hardfacing method is presented in this paper. Hardfacing repaired gears are tested on the closed power circuit device with variation of the torque value. During testing the wear intensity is measured and the gears' working life is predicted. Samples made of the same material as the gear are tested on tribometer of the 'block-on-disc' type. The gears are repaired in two ways: (1) by hardfacing with filler metal, which is subsequently case-hardened and heat-treated and then mechanically machined, and (2) by hardfacing with filler metal of high hardness (≈ 60 HRC)., U radu je predstavljena analiza zupčanika izrađenih od čelika za cementaciju 20MnCr5 koji je repariran tvrdim navarivanjem. Zupčanici reparirani tvrdim navarivanjem su ispitivani na uređaju sa zatvorenim strujnim kolom sa varijacijom veličine prenosnog momenta. Tokom ispitivanja, izmeren je intenzitet habanja i procenjen je radni vek zupčanika. Uzorci napravljeni od istog materijala kao zupčanik su ispitivani na tribometru tipa 'blok-na-disku'. Zupčanici su reparirani na dva načina: (1) putem tvrdog navarivanja dodatnim materijalom, koji je onda termohemijski i termički obrađen a zatim obrađen mašinski, a (2) putem tvrdog navarivanja sa dodatnim materijalom visoke tvrdoće (≈ 60 HRC).",
publisher = "Society for Structural Integrity and Life, Institute for Material Testing",
journal = "Integritet i vek konstrukcija",
title = "Tribological aspect of selecting filler metal for repair surfacing of gears by hardfacing, Tribološki aspekti izbora dodatnog materijala kod površinske reparacije zupčanika tvrdim navarivanjem",
pages = "130-127",
number = "2",
volume = "11",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1843"
}

Marković, S., Milović, L., Marinković, A.,& Lazović, T.. (2011). Tribological aspect of selecting filler metal for repair surfacing of gears by hardfacing. in Integritet i vek konstrukcija
Society for Structural Integrity and Life, Institute for Material Testing., 11(2), 127-130.
https://hdl.handle.net/21.15107/rcub_technorep_1843

Marković S, Milović L, Marinković A, Lazović T. Tribological aspect of selecting filler metal for repair surfacing of gears by hardfacing. in Integritet i vek konstrukcija. 2011;11(2):127-130.
https://hdl.handle.net/21.15107/rcub_technorep_1843 .

Marković, Svetislav, Milović, Ljubica, Marinković, Aleksandar, Lazović, Tatjana, "Tribological aspect of selecting filler metal for repair surfacing of gears by hardfacing" in Integritet i vek konstrukcija, 11, no. 2 (2011):127-130,
https://hdl.handle.net/21.15107/rcub_technorep_1843 .

TY  - JOUR
AU  - Ćirić, Radovan
AU  - Marković, Svetislav
AU  - Radović, Nenad
PY  - 2002
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/467
AB  - The aim of this work was to determine the influence of welding heat input on hardness distribution after SURFACING of two quench+temper steels. The results indicate that variation of heat input can partially provide required hardness distribution in heat affected zone.
AB  - U radu je prikazan uticaj pogonske energije zavarivanja na raspodelu tvrdoće u ZUT pri navarivanju dva čelika za poboljšanje. Utvrđeno je da se variranjem nivoa pogonske energije navarivanja može u znatnoj, ali ne i dovoljnoj meri, obezbediti dobijanje željene raspodele tvrdoće u ZUT.
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Influence of heat input on HAZ hardness distribution after surfacing two Q+T steels
T1  - Uticaj pogonske energije zavarivanja na raspodelu tvrdoće u ZUT pri navarivanju čelika za poboljšanje
EP  - 234
IS  - 4
SP  - 231
VL  - 47
UR  - https://hdl.handle.net/21.15107/rcub_technorep_467
ER  - 

@article{
author = "Ćirić, Radovan and Marković, Svetislav and Radović, Nenad",
year = "2002",
abstract = "The aim of this work was to determine the influence of welding heat input on hardness distribution after SURFACING of two quench+temper steels. The results indicate that variation of heat input can partially provide required hardness distribution in heat affected zone., U radu je prikazan uticaj pogonske energije zavarivanja na raspodelu tvrdoće u ZUT pri navarivanju dva čelika za poboljšanje. Utvrđeno je da se variranjem nivoa pogonske energije navarivanja može u znatnoj, ali ne i dovoljnoj meri, obezbediti dobijanje željene raspodele tvrdoće u ZUT.",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Influence of heat input on HAZ hardness distribution after surfacing two Q+T steels, Uticaj pogonske energije zavarivanja na raspodelu tvrdoće u ZUT pri navarivanju čelika za poboljšanje",
pages = "234-231",
number = "4",
volume = "47",
url = "https://hdl.handle.net/21.15107/rcub_technorep_467"
}

Ćirić, R., Marković, S.,& Radović, N.. (2002). Influence of heat input on HAZ hardness distribution after surfacing two Q+T steels. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 47(4), 231-234.
https://hdl.handle.net/21.15107/rcub_technorep_467

Ćirić R, Marković S, Radović N. Influence of heat input on HAZ hardness distribution after surfacing two Q+T steels. in Zavarivanje i zavarene konstrukcije. 2002;47(4):231-234.
https://hdl.handle.net/21.15107/rcub_technorep_467 .

Ćirić, Radovan, Marković, Svetislav, Radović, Nenad, "Influence of heat input on HAZ hardness distribution after surfacing two Q+T steels" in Zavarivanje i zavarene konstrukcije, 47, no. 4 (2002):231-234,
https://hdl.handle.net/21.15107/rcub_technorep_467 .