Naslov
Integrity assessment of shipbuilding welded component by using of FAD diagram

Autori
Holik, Mario ; Damjanović, Darko ; Baškarić, Tomislav ; Kozak, Dražan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Abstracts of 7th International PhD & DLA Symposium 7 / Fulop, Attila ; Habail, Peter - Pečuh : University of Pecs, Pollack Mihaly Faculty of Engineering and Information Tehnology, 2011

Skup
7th PhD & DLA Symposium

Mjesto i datum
Pečuh, Mađarska, 24.10.2011. - 25.10.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
crack; finite element method; SINTAP; R6 procedure; FAD diagram

Sažetak
Thin-walled welded shipbuilding components are often the places of the initial cracks in exploitation. Therefore, it is recommended to determine the critical size of crack which causes plastic collapse of component. In this paper R6 procedure has been used to find critical depth of crack assuming that the crack is through whole section of component. Six various crack depths were analysed. Crack has been assumed perpendicular to the vector of principal stress σ1 at the location of its maximum. The stress which lead to yielding of remained ligament and corresponding stress intensity factor value were calculated by using of software based on finite element method. Fracture toughness for the material of the component has been estimated from the Charpy toughness. Finally, all six pairs of the loading path points (Kr, Lr) were lying in the safe area within FAD diagram, so the fifth order polynomial should be constructed in order to find critical point of intersection with the material curve in FAD diagram. Obtained results shown excellent fracture behaviour of the welded component, due to the fact that very deep cracks still will not cause the plastic collapse. However, this could be rapidly changed if the component is subjected to the fatigue.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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