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- Title
CTOD-R Curve Tests of API 5L X90 By SENT Specimen Using a Modified Normalization Method.
- Authors
Kong, L. Z.; Zhou, X. Y.; Chen, L. Q.; Huang, K.; Peng, H. T.
- Abstract
A modified normalization method is presented for obtaining crack tip opening displacement (CTOD) resistance curves of single edge-notched tension specimens. For the applied load mode, the normalization method should be based on force-crack mouth opening displacement. A formula is proposed for CLL(i), the core parameter used in the normalization calculation. The modified method is validated using the unloading compliance method. The study of specimen geometry shows that side-groove depth and crack depth have significant impacts on the obtained CTOD resistance curves, and the shape of the crack front affects the determination accuracy of crack length.
- Subjects
FATIGUE cracks; R-curves; DISPLACEMENT (Mechanics); MATERIAL fatigue; MATERIALS science
- Publication
Fatigue & Fracture of Engineering Materials & Structures, 2017, Vol 40, Issue 2, p288
- ISSN
8756-758X
- Publication type
Article
- DOI
10.1111/ffe.12499