TY  - JOUR
AU  - Šarkočević, Živče
AU  - Arsić, Miodrag
AU  - Međo, Bojan
AU  - Kozak, Drazan
AU  - Rakin, Marko
AU  - Burzić, Zijah
AU  - Sedmak, Aleksandar
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1360
AB  - The subject of this paper is investigation of the damage level of API J55 steel, used for manufacturing casing pipes by high frequency (HF) contact welding. The analysed pipe was withdrawn after about 70 000 hours of service in an oil drilling rig. Experimental analysis included determining the mechanical properties of the base material and welded joint, in particular the tensile and impact toughness testing. Fracture behaviour is examined by testing the modified compact tension (CT) specimens machined with a pre-crack in the base metal, weld metal and heat affected zone (HAZ). The critical value of the stress intensity factor K(Ic) is determined using the critical value of the J integral J(Ic). Fatigue crack growth rate and fatigue threshold stress intensity factor range are determined by three point bending tests of the Charpy specimens with a V-notch. The investigation conducted on specimens cut from the exploited pipe and the new pipe of the same grade revealed that material properties were not seriously altered during the analysed period of service.
T2  - Strojarstvo
T1  - Damage Level Estimate of API J55 Steel for Welded Seam Casing Pipes
EP  - 311
IS  - 4
SP  - 303
VL  - 51
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1360
ER  - 

@article{
author = "Šarkočević, Živče and Arsić, Miodrag and Međo, Bojan and Kozak, Drazan and Rakin, Marko and Burzić, Zijah and Sedmak, Aleksandar",
year = "2009",
abstract = "The subject of this paper is investigation of the damage level of API J55 steel, used for manufacturing casing pipes by high frequency (HF) contact welding. The analysed pipe was withdrawn after about 70 000 hours of service in an oil drilling rig. Experimental analysis included determining the mechanical properties of the base material and welded joint, in particular the tensile and impact toughness testing. Fracture behaviour is examined by testing the modified compact tension (CT) specimens machined with a pre-crack in the base metal, weld metal and heat affected zone (HAZ). The critical value of the stress intensity factor K(Ic) is determined using the critical value of the J integral J(Ic). Fatigue crack growth rate and fatigue threshold stress intensity factor range are determined by three point bending tests of the Charpy specimens with a V-notch. The investigation conducted on specimens cut from the exploited pipe and the new pipe of the same grade revealed that material properties were not seriously altered during the analysed period of service.",
journal = "Strojarstvo",
title = "Damage Level Estimate of API J55 Steel for Welded Seam Casing Pipes",
pages = "311-303",
number = "4",
volume = "51",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1360"
}

Šarkočević, Ž., Arsić, M., Međo, B., Kozak, D., Rakin, M., Burzić, Z.,& Sedmak, A.. (2009). Damage Level Estimate of API J55 Steel for Welded Seam Casing Pipes. in Strojarstvo, 51(4), 303-311.
https://hdl.handle.net/21.15107/rcub_technorep_1360

Šarkočević Ž, Arsić M, Međo B, Kozak D, Rakin M, Burzić Z, Sedmak A. Damage Level Estimate of API J55 Steel for Welded Seam Casing Pipes. in Strojarstvo. 2009;51(4):303-311.
https://hdl.handle.net/21.15107/rcub_technorep_1360 .

Šarkočević, Živče, Arsić, Miodrag, Međo, Bojan, Kozak, Drazan, Rakin, Marko, Burzić, Zijah, Sedmak, Aleksandar, "Damage Level Estimate of API J55 Steel for Welded Seam Casing Pipes" in Strojarstvo, 51, no. 4 (2009):303-311,
https://hdl.handle.net/21.15107/rcub_technorep_1360 .