TY  - CONF
AU  - Folić, Boris
AU  - Ćosić, M.
AU  - Brčić, S.
AU  - Čokić, M.
AU  - Sedmak, S.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6991
AB  - U ovom radu prikazan je način modelovanja drugog udara (zemljotresa), pojave čiji je
značaj zapažen tokom druge polovine 20 veka. Navedeni su konstruktivni sistemi kod kojih
je bitno razmatranje drugog udara. Detaljnije je prikazan model skeletne AB konstrukcije,
odnosno 2D AB fasadnog okvira fundiranog na bušenim AB šipovima, prečnika 60cm.
Dinamička interakcija tlo-šip, odnosno nelinearno ponašanje tla je modelovano
horizontalnim p-y krivama za pesak, primenom multiplastic link elemenata. Za
akcelerogram El Centro tokom vremenske analize (TH) razmatrani su: globalno pomeranje,
(lokalni) drift i stanje plastičnih zglobova.
AB  - This paper presents the manner of modeling the aftershock (in an earthquake), the
phenomenon whose significance has been noted in the second half of the 20th century. Itlists the constructional systems in which the consideration of the aftershock is important. It
shows in more detail the model of the skeletal RC construction, i.e. the 2D RC facade frame
constructed on the 60cm-diameter drilled RC piles. The dynamic interaction soil-pile, i.e.
the non-linear behaviour of the soil is modelled with the horizontal p-y curves for sand,
applying multiplastic link elements. For the accelerogram El Centro during time history
(TH) the global and (local) drift, the condition of plastic hinges were considered.
PB  - Savez građevinskih inženjera Srbije
C3  - Ocena stanja, održavanje i sanacija građevinskih objekata i naselja, Zlatibor, 19. - 21. Jun
T1  - The effect of aftershock on 2D RC frame founded on piles with P-Y curves
T1  - EFEKAT NAKNADNIH UDARA NA 2D AB RAMU FUNDIRANOM NA ŠIPOVIMA PREKO P-Y KRIVIH
EP  - 386
SP  - 375
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6991
ER  - 

@conference{
author = "Folić, Boris and Ćosić, M. and Brčić, S. and Čokić, M. and Sedmak, S.",
year = "2019",
abstract = "U ovom radu prikazan je način modelovanja drugog udara (zemljotresa), pojave čiji je
značaj zapažen tokom druge polovine 20 veka. Navedeni su konstruktivni sistemi kod kojih
je bitno razmatranje drugog udara. Detaljnije je prikazan model skeletne AB konstrukcije,
odnosno 2D AB fasadnog okvira fundiranog na bušenim AB šipovima, prečnika 60cm.
Dinamička interakcija tlo-šip, odnosno nelinearno ponašanje tla je modelovano
horizontalnim p-y krivama za pesak, primenom multiplastic link elemenata. Za
akcelerogram El Centro tokom vremenske analize (TH) razmatrani su: globalno pomeranje,
(lokalni) drift i stanje plastičnih zglobova., This paper presents the manner of modeling the aftershock (in an earthquake), the
phenomenon whose significance has been noted in the second half of the 20th century. Itlists the constructional systems in which the consideration of the aftershock is important. It
shows in more detail the model of the skeletal RC construction, i.e. the 2D RC facade frame
constructed on the 60cm-diameter drilled RC piles. The dynamic interaction soil-pile, i.e.
the non-linear behaviour of the soil is modelled with the horizontal p-y curves for sand,
applying multiplastic link elements. For the accelerogram El Centro during time history
(TH) the global and (local) drift, the condition of plastic hinges were considered.",
publisher = "Savez građevinskih inženjera Srbije",
journal = "Ocena stanja, održavanje i sanacija građevinskih objekata i naselja, Zlatibor, 19. - 21. Jun",
title = "The effect of aftershock on 2D RC frame founded on piles with P-Y curves, EFEKAT NAKNADNIH UDARA NA 2D AB RAMU FUNDIRANOM NA ŠIPOVIMA PREKO P-Y KRIVIH",
pages = "386-375",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6991"
}

Folić, B., Ćosić, M., Brčić, S., Čokić, M.,& Sedmak, S.. (2019). The effect of aftershock on 2D RC frame founded on piles with P-Y curves. in Ocena stanja, održavanje i sanacija građevinskih objekata i naselja, Zlatibor, 19. - 21. Jun
Savez građevinskih inženjera Srbije., 375-386.
https://hdl.handle.net/21.15107/rcub_machinery_6991

Folić B, Ćosić M, Brčić S, Čokić M, Sedmak S. The effect of aftershock on 2D RC frame founded on piles with P-Y curves. in Ocena stanja, održavanje i sanacija građevinskih objekata i naselja, Zlatibor, 19. - 21. Jun. 2019;:375-386.
https://hdl.handle.net/21.15107/rcub_machinery_6991 .

Folić, Boris, Ćosić, M., Brčić, S., Čokić, M., Sedmak, S., "The effect of aftershock on 2D RC frame founded on piles with P-Y curves" in Ocena stanja, održavanje i sanacija građevinskih objekata i naselja, Zlatibor, 19. - 21. Jun (2019):375-386,
https://hdl.handle.net/21.15107/rcub_machinery_6991 .

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  - Milović, Ljubica
AU  - Zrilić, Milorad
AU  - Sedmak, S.
AU  - Sedmak, Aleksandar
AU  - Burzić, Meri
PY  - 2008
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/775
AB  - In past two decades, the development of 9-12% Cr creep-resistant steel for critical components in coal-fired power stations that can withstand higher temperatures and pressures has been intensified in order to increase efficiency of supercritical plants. As the systems that can withstand ultra supercritical steam conditions are of an absolute necessity, it is an imperative to use the materials of adequate strength, physical properties and metallurgical stability at operating temperature. The aim is to prevent catastrophic failures arising based on a few mechanisms: leakage due to variation of the dimensions caused by creep, breakage-explosion due to fracture caused by stress and thermal fatigue due to cyclic stresses caused by heat. Welding is the most important process of joining the components in such plants, and the heataffected zone (HAZ) is often the weakest part of these structures. The variations of microstructures in HAZ affected by welding thermal cycle lead to inferior mechanical properties of this zone in comparison with base metal. In present paper, the effect of post weld heat treatment (PWHT) on behaviour of welded structure made of material P91 at an operating temperature of 600°C has been presented. Research was conducted on the specimens with simulated HAZ, namely in critical zone in which the cracks of type IV might occur. The R curve for J-R curve testing was generated using the single specimen technique on the single edge side grooved test specimens. The tool for tensile testing used for putting the specimens into furnace was of special design.
C3  - 17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components
T1  - Experimental determination of J-integral at elevated temperatures
EP  - 1388
SP  - 1381
VL  - 2
UR  - https://hdl.handle.net/21.15107/rcub_machinery_775
ER  - 

@conference{
author = "Milović, Ljubica and Zrilić, Milorad and Sedmak, S. and Sedmak, Aleksandar and Burzić, Meri",
year = "2008",
abstract = "In past two decades, the development of 9-12% Cr creep-resistant steel for critical components in coal-fired power stations that can withstand higher temperatures and pressures has been intensified in order to increase efficiency of supercritical plants. As the systems that can withstand ultra supercritical steam conditions are of an absolute necessity, it is an imperative to use the materials of adequate strength, physical properties and metallurgical stability at operating temperature. The aim is to prevent catastrophic failures arising based on a few mechanisms: leakage due to variation of the dimensions caused by creep, breakage-explosion due to fracture caused by stress and thermal fatigue due to cyclic stresses caused by heat. Welding is the most important process of joining the components in such plants, and the heataffected zone (HAZ) is often the weakest part of these structures. The variations of microstructures in HAZ affected by welding thermal cycle lead to inferior mechanical properties of this zone in comparison with base metal. In present paper, the effect of post weld heat treatment (PWHT) on behaviour of welded structure made of material P91 at an operating temperature of 600°C has been presented. Research was conducted on the specimens with simulated HAZ, namely in critical zone in which the cracks of type IV might occur. The R curve for J-R curve testing was generated using the single specimen technique on the single edge side grooved test specimens. The tool for tensile testing used for putting the specimens into furnace was of special design.",
journal = "17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components",
title = "Experimental determination of J-integral at elevated temperatures",
pages = "1388-1381",
volume = "2",
url = "https://hdl.handle.net/21.15107/rcub_machinery_775"
}

Milović, L., Zrilić, M., Sedmak, S., Sedmak, A.,& Burzić, M.. (2008). Experimental determination of J-integral at elevated temperatures. in 17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components, 2, 1381-1388.
https://hdl.handle.net/21.15107/rcub_machinery_775

Milović L, Zrilić M, Sedmak S, Sedmak A, Burzić M. Experimental determination of J-integral at elevated temperatures. in 17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components. 2008;2:1381-1388.
https://hdl.handle.net/21.15107/rcub_machinery_775 .

Milović, Ljubica, Zrilić, Milorad, Sedmak, S., Sedmak, Aleksandar, Burzić, Meri, "Experimental determination of J-integral at elevated temperatures" in 17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components, 2 (2008):1381-1388,
https://hdl.handle.net/21.15107/rcub_machinery_775 .

TY  - CONF
AU  - Milović, Ljubica
AU  - Sedmak, Aleksandar
AU  - Sedmak, S.
AU  - Putić, Slaviša
AU  - Zrilić, Milorad
PY  - 2007
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/676
AB  - Structural integrity and service reliability depend on the fracture resistance of a material. Cracks in the material are the locations of stress concentration, and elastic-plastic deformation can occur causing the development of mixed-mode type of fracture ahead the crack tip. Crack behavior in the elastic-plastic region is analyzed applying numerical and analytical simulation based on fracture mechanics parameters, characterizing the response of the material at the crack tip. Numerical and analytical results are compared with the corresponding experimental results obtained in previously performed fracture mechanics tests with standard single-edge notch bending SEN(B) specimens. The comparison shows an acceptable level of agreement, enabling application of the proposed numerical model of crack growth in the mixed-mode fracture analysis for structural integrity assessment.
PB  - Trans Tech Publications Ltd
C3  - Materials Science Forum
T1  - Numerical and analytical modeling of elastic-plastic fracture mechanics parameters
EP  - 570
SP  - 565
VL  - 555
DO  - 10.4028/0-87849-441-3.565
ER  - 

@conference{
author = "Milović, Ljubica and Sedmak, Aleksandar and Sedmak, S. and Putić, Slaviša and Zrilić, Milorad",
year = "2007",
abstract = "Structural integrity and service reliability depend on the fracture resistance of a material. Cracks in the material are the locations of stress concentration, and elastic-plastic deformation can occur causing the development of mixed-mode type of fracture ahead the crack tip. Crack behavior in the elastic-plastic region is analyzed applying numerical and analytical simulation based on fracture mechanics parameters, characterizing the response of the material at the crack tip. Numerical and analytical results are compared with the corresponding experimental results obtained in previously performed fracture mechanics tests with standard single-edge notch bending SEN(B) specimens. The comparison shows an acceptable level of agreement, enabling application of the proposed numerical model of crack growth in the mixed-mode fracture analysis for structural integrity assessment.",
publisher = "Trans Tech Publications Ltd",
journal = "Materials Science Forum",
title = "Numerical and analytical modeling of elastic-plastic fracture mechanics parameters",
pages = "570-565",
volume = "555",
doi = "10.4028/0-87849-441-3.565"
}

Milović, L., Sedmak, A., Sedmak, S., Putić, S.,& Zrilić, M.. (2007). Numerical and analytical modeling of elastic-plastic fracture mechanics parameters. in Materials Science Forum
Trans Tech Publications Ltd., 555, 565-570.
https://doi.org/10.4028/0-87849-441-3.565

Milović L, Sedmak A, Sedmak S, Putić S, Zrilić M. Numerical and analytical modeling of elastic-plastic fracture mechanics parameters. in Materials Science Forum. 2007;555:565-570.
doi:10.4028/0-87849-441-3.565 .

Milović, Ljubica, Sedmak, Aleksandar, Sedmak, S., Putić, Slaviša, Zrilić, Milorad, "Numerical and analytical modeling of elastic-plastic fracture mechanics parameters" in Materials Science Forum, 555 (2007):565-570,
https://doi.org/10.4028/0-87849-441-3.565 . .

TY  - CONF
AU  - Zrilić, Milorad
AU  - Rakin, Marko
AU  - Cvijović, Z.
AU  - Sedmak, Aleksandar
AU  - Sedmak, S.
PY  - 2006
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/661
PB  - Kluwer Academic Publishers
C3  - Fracture of Nano and Engineering Materials and Structures - Proceedings of the 16th European Confere
T1  - Structural integrity assessment by local approach to fracture
EP  - 1070
SP  - 1069
DO  - 10.1007/1-4020-4972-2_530
ER  - 

@conference{
author = "Zrilić, Milorad and Rakin, Marko and Cvijović, Z. and Sedmak, Aleksandar and Sedmak, S.",
year = "2006",
publisher = "Kluwer Academic Publishers",
journal = "Fracture of Nano and Engineering Materials and Structures - Proceedings of the 16th European Confere",
title = "Structural integrity assessment by local approach to fracture",
pages = "1070-1069",
doi = "10.1007/1-4020-4972-2_530"
}

Zrilić, M., Rakin, M., Cvijović, Z., Sedmak, A.,& Sedmak, S.. (2006). Structural integrity assessment by local approach to fracture. in Fracture of Nano and Engineering Materials and Structures - Proceedings of the 16th European Confere
Kluwer Academic Publishers., 1069-1070.
https://doi.org/10.1007/1-4020-4972-2_530

Zrilić M, Rakin M, Cvijović Z, Sedmak A, Sedmak S. Structural integrity assessment by local approach to fracture. in Fracture of Nano and Engineering Materials and Structures - Proceedings of the 16th European Confere. 2006;:1069-1070.
doi:10.1007/1-4020-4972-2_530 .

Zrilić, Milorad, Rakin, Marko, Cvijović, Z., Sedmak, Aleksandar, Sedmak, S., "Structural integrity assessment by local approach to fracture" in Fracture of Nano and Engineering Materials and Structures - Proceedings of the 16th European Confere (2006):1069-1070,
https://doi.org/10.1007/1-4020-4972-2_530 . .

TY  - JOUR
AU  - Rakin, Marko
AU  - Sedmak, Aleksandar
AU  - Svijović, Z.
AU  - Zrilić, Milorad
AU  - Sedmak, S.
PY  - 2004
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/405
AB  - We present results of the combined design-theoretical investigation of the mechanism of crack growth at the onset of ductile fracture of NPP reactor pressure vessels. Micromechanical approach to the prediction of ductile fracture has been applied, according to which the volume fraction of voids in the deformed material is determined by finite-element method. On the basis of CT-specimen tests and known damage parameters, obtained on smooth spherical specimens, we obtained micromechanical criterion of crack growth initiation for ductile fracture.
T2  - Problemy Prochnosti
T1  - Micromechanical coupled study of crack growth initiation criterion in Pressure vessel steel
EP  - 53
IS  - 1
SP  - 48
UR  - https://hdl.handle.net/21.15107/rcub_machinery_405
ER  - 

@article{
author = "Rakin, Marko and Sedmak, Aleksandar and Svijović, Z. and Zrilić, Milorad and Sedmak, S.",
year = "2004",
abstract = "We present results of the combined design-theoretical investigation of the mechanism of crack growth at the onset of ductile fracture of NPP reactor pressure vessels. Micromechanical approach to the prediction of ductile fracture has been applied, according to which the volume fraction of voids in the deformed material is determined by finite-element method. On the basis of CT-specimen tests and known damage parameters, obtained on smooth spherical specimens, we obtained micromechanical criterion of crack growth initiation for ductile fracture.",
journal = "Problemy Prochnosti",
title = "Micromechanical coupled study of crack growth initiation criterion in Pressure vessel steel",
pages = "53-48",
number = "1",
url = "https://hdl.handle.net/21.15107/rcub_machinery_405"
}

Rakin, M., Sedmak, A., Svijović, Z., Zrilić, M.,& Sedmak, S.. (2004). Micromechanical coupled study of crack growth initiation criterion in Pressure vessel steel. in Problemy Prochnosti(1), 48-53.
https://hdl.handle.net/21.15107/rcub_machinery_405

Rakin M, Sedmak A, Svijović Z, Zrilić M, Sedmak S. Micromechanical coupled study of crack growth initiation criterion in Pressure vessel steel. in Problemy Prochnosti. 2004;(1):48-53.
https://hdl.handle.net/21.15107/rcub_machinery_405 .

Rakin, Marko, Sedmak, Aleksandar, Svijović, Z., Zrilić, Milorad, Sedmak, S., "Micromechanical coupled study of crack growth initiation criterion in Pressure vessel steel" in Problemy Prochnosti, no. 1 (2004):48-53,
https://hdl.handle.net/21.15107/rcub_machinery_405 .

TY  - JOUR
AU  - Sedmak, Aleksandar
AU  - Sedmak, S.
PY  - 1995
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/131
AB  - A consideration is given to the problem of determining remaining operational life of steam turbine rotors at the following mechanisms of crack initiation and propagation: low-cycle thermal fatigue, high-cycle fatigue and creep. Finite element method is used to analyze stress fields, steam pressure and temperature effects. The estimation method applied permits to bring to light some critical points in power plant equipment which require close examination.
PB  - Mezhdunarodnaya Kniga, Moscow, Russian Federation
T2  - Fiziko-Khimicheskaya Mekhanika Materialov
T1  - Evaluation of residual life of steam turbine rotors
EP  - 75
IS  - 1
SP  - 68
VL  - 31
UR  - https://hdl.handle.net/21.15107/rcub_machinery_131
ER  - 

@article{
author = "Sedmak, Aleksandar and Sedmak, S.",
year = "1995",
abstract = "A consideration is given to the problem of determining remaining operational life of steam turbine rotors at the following mechanisms of crack initiation and propagation: low-cycle thermal fatigue, high-cycle fatigue and creep. Finite element method is used to analyze stress fields, steam pressure and temperature effects. The estimation method applied permits to bring to light some critical points in power plant equipment which require close examination.",
publisher = "Mezhdunarodnaya Kniga, Moscow, Russian Federation",
journal = "Fiziko-Khimicheskaya Mekhanika Materialov",
title = "Evaluation of residual life of steam turbine rotors",
pages = "75-68",
number = "1",
volume = "31",
url = "https://hdl.handle.net/21.15107/rcub_machinery_131"
}

Sedmak, A.,& Sedmak, S.. (1995). Evaluation of residual life of steam turbine rotors. in Fiziko-Khimicheskaya Mekhanika Materialov
Mezhdunarodnaya Kniga, Moscow, Russian Federation., 31(1), 68-75.
https://hdl.handle.net/21.15107/rcub_machinery_131

Sedmak A, Sedmak S. Evaluation of residual life of steam turbine rotors. in Fiziko-Khimicheskaya Mekhanika Materialov. 1995;31(1):68-75.
https://hdl.handle.net/21.15107/rcub_machinery_131 .

Sedmak, Aleksandar, Sedmak, S., "Evaluation of residual life of steam turbine rotors" in Fiziko-Khimicheskaya Mekhanika Materialov, 31, no. 1 (1995):68-75,
https://hdl.handle.net/21.15107/rcub_machinery_131 .

TY  - CONF
AU  - Šijački-Žeravčić, Vera
AU  - Sedmak, Aleksandar
AU  - Sedmak, S.
PY  - 1984
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/104
AB  - A thermomechanically treated aluminum alloy containing 4. 5% Cu, 0. 6% Mn, 0. 6% Mg and 0. 4% Si has been experimentally investigated with regard to its notch sensitivity. The thermomechanical treatment consisted of quenching and ageing with different periods of precipitation, and different degrees of a cold plastic deformation afterwards. Five series of smooth and notched specimens were tested on a standard tensile machine and fracture surfaces were studied by TEM replicas. The Notch-Yield Ratio (NYR) and the fracture appearance were used as a measure of the notch sensitivity. It was found that certain thermomechanical treatments cause notch sensitivity and brittle fracture of notched specimens, even in the case of the low value of sigma //0//,//2/// RHO ratio. Thermomechanical treatment consisting of 120 minutes precipitation and 30% or 40% deformation degree of cold rolling deformation can be recommended as the most suitable for structural application.
PB  - Pergamon Press, Oxford, Engl
T1  - Experimental investigation of notch sensitivity of thermomechanically treated aluminium alloy.
EP  - 1513
SP  - 1507
DO  - 10.1016/b978-1-4832-8440-8.50141-1
ER  - 

@conference{
author = "Šijački-Žeravčić, Vera and Sedmak, Aleksandar and Sedmak, S.",
year = "1984",
abstract = "A thermomechanically treated aluminum alloy containing 4. 5% Cu, 0. 6% Mn, 0. 6% Mg and 0. 4% Si has been experimentally investigated with regard to its notch sensitivity. The thermomechanical treatment consisted of quenching and ageing with different periods of precipitation, and different degrees of a cold plastic deformation afterwards. Five series of smooth and notched specimens were tested on a standard tensile machine and fracture surfaces were studied by TEM replicas. The Notch-Yield Ratio (NYR) and the fracture appearance were used as a measure of the notch sensitivity. It was found that certain thermomechanical treatments cause notch sensitivity and brittle fracture of notched specimens, even in the case of the low value of sigma //0//,//2/// RHO ratio. Thermomechanical treatment consisting of 120 minutes precipitation and 30% or 40% deformation degree of cold rolling deformation can be recommended as the most suitable for structural application.",
publisher = "Pergamon Press, Oxford, Engl",
title = "Experimental investigation of notch sensitivity of thermomechanically treated aluminium alloy.",
pages = "1513-1507",
doi = "10.1016/b978-1-4832-8440-8.50141-1"
}

Šijački-Žeravčić, V., Sedmak, A.,& Sedmak, S.. (1984). Experimental investigation of notch sensitivity of thermomechanically treated aluminium alloy.. 
Pergamon Press, Oxford, Engl., 1507-1513.
https://doi.org/10.1016/b978-1-4832-8440-8.50141-1

Šijački-Žeravčić V, Sedmak A, Sedmak S. Experimental investigation of notch sensitivity of thermomechanically treated aluminium alloy.. 1984;:1507-1513.
doi:10.1016/b978-1-4832-8440-8.50141-1 .

Šijački-Žeravčić, Vera, Sedmak, Aleksandar, Sedmak, S., "Experimental investigation of notch sensitivity of thermomechanically treated aluminium alloy." (1984):1507-1513,
https://doi.org/10.1016/b978-1-4832-8440-8.50141-1 . .