Počet záznamů: 1  

Application of Fracture-Mechanics Approach to Gas Pipelines

  1. 1. 0359984 - UTAM-F 2012 RIV AE eng J - Článek v odborném periodiku
    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
    Grant CEP: GA ČR(CZ) GAP105/10/2052; GA ČR(CZ) GPP105/10/P555
    Grant ostatní:GAMPO(CZ) FT-TA5/076
    Výzkumný záměr: CEZ:AV0Z20710524
    Klíčová slova: axial crack * fracture-mechanics * J integral * pipeline wall
    Kód oboru RIV: JL - Únava materiálu a lomová mechanika

    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.
    Trvalý link: http://hdl.handle.net/11104/0197647