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- Title
Fatigue crack propagation characteristics of high‐tensile steel wires for bridge cables.
- Authors
Zheng, X.L.; Xie, X.; Li, X.Z.; Tang, Z.Z.
- Abstract
The viability of single edge cracked sheet test method for rapidly determining the crack propagation characteristics of steel wires was investigated. First, fatigue tests under 3 different stress ratios were conducted on the sheet specimens which were manufactured from a kind of widely used cable wires. The test data were analysed, and the crack growth rates of sheet specimens were constructed by Walker model. Then, a series of fatigue tests were performed on notched round‐bar specimens to verify the predictability of Walker model parameters. Moreover, the experimental results obtained in different studies on crack propagation characteristics of steel wires were discussed. The results show that the crack propagation characteristics of sheet specimens behave a certain dependence on depth. The sheet crack growth laws can be well used to predict the fatigue life of notched bar specimens when the mechanical heterogeneity is considered. For bridge cable steels, the rational values for the exponent parameter of Paris law, m, should be close to 3.
- Subjects
CRACK propagation (Fracture mechanics); CABLES testing; STEEL wire; MATERIAL fatigue; TENSILE strength; DATA analysis; WIRE testing
- Publication
Fatigue & Fracture of Engineering Materials & Structures, 2019, Vol 42, Issue 1, p256
- ISSN
8756-758X
- Publication type
Article
- DOI
10.1111/ffe.12901