Název:
FRACTURE MECHANICS ASSESSMENT OF CRACKED WELDED POLYOLEFIN PIPES
Autoři:
Mikula, Jakub ; Ševčík, Martin ; Hutař, Pavel ; Náhlík, Luboš Typ dokumentu: Příspěvky z konference Konference/Akce: EM - International Conference on Engineering Mechanics /20./, Svratka (CZ), 2014-05-12 / 2014-05-15
Rok:
2014
Jazyk:
eng
Abstrakt: The aim of this paper is to present methodology for estimation of fracture mechanics parameters in polyolefin pipes with an axially oriented crack using three dimensional numerical analyses. Linear elastic fracture mechanics is used for description of fracture behavior. In the paper, three different variants of pipe weld with an internal axial semi-elliptical crack are studied. Numerical models correspond to a cracked pipe containing material nonhomogeneity in the welding area caused by welding process. A critical locations of the crack initiated along the pipe wall is found and the stress intensity factor for such cracks with real crack shape are numerically estimated in these critical locations. The methodology presented here can be used for estimation of residual lifetime of welded polymer pipes containing crack.
Klíčová slova:
butt weld; numerical loading; Polyolefin pipes; stress intensity factor Číslo projektu: EE2.3.30.0063, GAP108/12/1560 (CEP) Poskytovatel projektu: GA MŠk, GA ČR Zdrojový dokument: Engineering Mechanics 2014. 20th International conference. May 12-15, 2014, Svratka, Czech Republic. Book of full texts, ISBN 978-80-214-4871-1, ISSN 1805-8248
Instituce: Ústav fyziky materiálů AV ČR
(web)
Informace o dostupnosti dokumentu:
Dokument je dostupný v příslušném ústavu Akademie věd ČR. Původní záznam: http://hdl.handle.net/11104/0264029