Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5014021 | Engineering Fracture Mechanics | 2017 | 35 Pages |
Abstract
We developed the first model to evaluate unstable ductile crack arrestability in offshore pipelines. The proposed model is an integrated one-dimensional model with four sub-models to calculate (a) pipe deformation, (b) gas flow inside pipe, (c) bubble growth, and (d) crack propagation. We validated the proposed model by applying it to two types of tests: laboratory scale underwater rupture tests and existing data of a full-scale burst test of an offshore pipeline. In addition, the calculation results of the proposed model showed that a deep water depth results in increased unstable crack arrestability of the pipeline.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
Kazuki Shibanuma, Takahiro Hosoe, Hiroaki Nakai, Akiyasu Morita, Shuji Aihara,