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Application of Fracture-Mechanics Approach to Gas Pipelines

SYSNO ASEP	0359984
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve SCOPUS
Title	Application of Fracture-Mechanics Approach to Gas Pipelines
Author(s)	Gajdoš, Lubomír (UTAM-F)_{RID, SAI} Šperl, Martin (UTAM-F)_{RID, SAI}
Number of authors	2
Source Title	World Academy of Science, Engineering and Technology - ISSN 2010-376X VII, č. 73 (2011), s. 480-487
Number of pages	8 s.
Language	eng - English
Country	AE - United Arab Emirates
Keywords	axial crack ; fracture-mechanics ; J integral ; pipeline wall
Subject RIV	JL - Materials Fatigue, Friction Mechanics
R&D Projects	GAP105/10/2052 GA ČR - Czech Science Foundation (CSF)
	GPP105/10/P555 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z20710524 - UTAM-F (2005-2011)
EID SCOPUS	79952998633
Annotation	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.
Workplace	Institute of Theoretical and Applied Mechanics
Contact	Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285
Year of Publishing	2012

Number of the records: 1