Number of the records: 1
Application of Fracture-Mechanics Approach to Gas Pipelines
- 1.0359984 - ÚTAM 2012 RIV AE eng J - Journal Article
Gajdoš, Lubomír - Šperl, Martin
Application of Fracture-Mechanics Approach to Gas Pipelines.
World Academy of Science, Engineering and Technology. VII, č. 73 (2011), s. 480-487. ISSN 2010-376X
R&D Projects: GA ČR(CZ) GAP105/10/2052; GA ČR(CZ) GPP105/10/P555
Grant - others:GAMPO(CZ) FT-TA5/076
Program: FT
Institutional research plan: CEZ:AV0Z20710524
Keywords : axial crack * fracture-mechanics * J integral * pipeline wall
Subject RIV: JL - Materials Fatigue, Friction Mechanics
This study offers a new simple method for assessing an axial part-through crack in a pipe wall. The method utilizes simple approximate expressions for determining the fracture parameters K, J, and employs these parameters to determine critical dimensions of a crack on the basis of equality between the J-integral and the J-based fracture toughness of the pipe steel. The crack tip constraint is taken into account by the so-called plastic constraint factor C, by which the uniaxial yield stress in the J-integral equation is multiplied. The results of the prediction of the fracture condition are verified by burst tests on test pipes.
Permanent Link: http://hdl.handle.net/11104/0197647
Number of the records: 1