Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
772263 | Engineering Fracture Mechanics | 2006 | 19 Pages |
Abstract
Simplified strain-based fracture mechanics equations, established for external surface cracked pipelines subjected to an external bending load, are presented and used in probabilistic assessment of a pipeline girth weld. The model takes into account several parameters, such as variation in crack depth, crack length, internal pressure and material hardening. The critical strain from ductile tearing in the cracked pipeline is found by using the tangency criterion. The reliability problem is solved using first and second order reliability methods for different pipe dimensions and load levels.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
Andreas Sandvik, Erling Østby, Christian Thaulow,