20.500.12556/DKUM-50106 Determination of fatigue crack growth parameters in welded joint of HSLA steel Određivanje parametara zamornog rasta prsline kod zavarenih spojeva od HSLA čelika The structural integrity and operational safety of welded pressure vessels primarily depends on the behaviour of weldments. In spite of all efforts in material production and improvements in welding techniques, including strict codes, requirements and directives, the crack occurrence in welded structures cannot be completely excluded. This is why fracture mechanics analysis is inevitable in the structural integrity assessment of all welded structures. Examples of practical application of fracture mechanics parameters in cracked pressure vessel structural integrity are considered. This paper shows the determination of parameters of the fatigue crack for constituents of welded joints produced of high strength low alloyed steel Nionikral-70 (yield strength 700 MPa). Results have shown that the position of notch and crack initiation affect the values of the stress intensity range of fatigue threshold ?Kth and parameters in the Paris' equation. HSLA jekla rast razpoke HSLA steel crack growth rate fatigue threshold Paris' law true false false Angleški jezik Angleški jezik Delo ni kategorizirano 2015-07-10 12:35:43 2015-07-10 12:35:43 2022-05-28 03:08:35 2019-07-10 21:44:31 2011 0 0 str. 183-187 no. 3 Vol. 11 2011 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.172.24: 669.15 16027158 16027414 1451-3749 URN:SI:UM:DK:WJ2NNHDL http://divk.inovacionicentar.rs/ivk/ivk11/ivk1103-5.html 1 https://dk.um.si/Dokument.php?lang=slv&id=74664 Fakulteta za strojništvo 0 0 0