1. Modification Strain-Based Failure Assessment Diagram for High Strength Pipeline Steel
- Author
-
Wei Jie Jiang, Jun Lin Shi, and Jian Ping Zhao
- Subjects
Materials science ,Strain (chemistry) ,business.industry ,Pipeline (computing) ,Diagram ,Abscissa ,General Medicine ,Structural engineering ,Finite element method ,symbols.namesake ,symbols ,Fracture (geology) ,Material properties ,business ,Failure assessment - Abstract
The strain-based failure assessment diagram (SB-FAD) has been developed to predict failure due to high plastic strains. This paper validates the SB-FAD by finite element results for high strength pipeline steel (X80, X80HD, and X90) with four representative specimens (CT, CCP, DECP, and SCEP) of different crack sizes, respectively. The influence of material properties, geometries and crack sizes on failure assessment curves were compared and analyzed. Meanwhile, the modified Option-1 curve of SB-FAD is given in this paper. The results showed that the modified Option-1 curve of SB-FAD is more accurate when the value of abscissais Dr small and more conservative when the value of abscissa Dr is large.
- Published
- 2016