%0 Journal Article %A Ľubomír Gajdoš and Martin Šperl %D 2011 %J International Journal of Mechanical and Mechatronics Engineering %B World Academy of Science, Engineering and Technology %I Open Science Index 49, 2011 %T Application of a Fracture-Mechanics Approach to Gas Pipelines %U https://publications.waset.org/pdf/10332 %V 49 %X 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. %P 67 - 74