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- Title
Off-axis fatigue cracking behaviour in notched fibre metal laminates.
- Authors
CHANG, P.-Y.; YANG, J.-M.; SEO, H.; HAHN, H. T.
- Abstract
The off-axis fatigue cracking behaviour of notched fibre metal laminates under constant amplitude loading conditions was investigated experimentally and numerically. It was found that the off-axis fatigue crack initiation life decreased as the off-axis angles increased. This indicated that the off-axis laminates raised the applied stress level in the aluminium (Al) layer and subsequently resulted in earlier cracking in the Al layer. The off-axis fatigue crack initiation lives of notched fibre metal laminates were predicted using lamination theory and an energy-based critical plane fatigue damage analysis from the literature. After a crack initiated in the Al layer, it was observed that the crack path angles of the off-axis specimens were neither perpendicular to the fibre nor to the loading direction. A finite-element model was established for predicting the crack path angles.
- Subjects
FRACTURE mechanics; METAL fatigue; LAMINATED metals; FINITE element method; SURFACE tension; SURFACES (Technology)
- Publication
Fatigue & Fracture of Engineering Materials & Structures, 2007, Vol 30, Issue 12, p1158
- ISSN
8756-758X
- Publication type
Article
- DOI
10.1111/j.1460-2695.2007.01185.x