1. Modelling fatigue crack propagation of a cracked metallic member reinforced by composite patches
- Author
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Wang, Rong and Nussbaumer, A.
- Subjects
- *
METAL fatigue , *METAL creep , *CREEP (Materials) , *FRACTURE mechanics , *DEFORMATIONS (Mechanics) , *METALS testing , *COMPOSITE materials - Abstract
Abstract: The concept of fracture for material elements at front of a crack for fatigue crack propagation was extended to the fatigue crack propagation of a cracked metallic member reinforced with a composite patch in this paper. From static mechanics and linear elastic fracture mechanics, force transfer on a cracked member through a composite patch was analyzed and a formula connecting the stress intensity factor with crack length was obtained. Thereafter, a fracture model for fatigue crack propagation of a repaired cracked metallic member was proposed. A new expression for the fatigue crack propagation rate has thus been derived. The expression was verified objectively by the test data. It is in good agreement with the test results. [Copyright &y& Elsevier]
- Published
- 2009
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