Off-axis Fatigue Crack Growth and the Associated Energy Release Rate in Composite Laminates |
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| Authors: | J Tong F J Guild S L Ogin P A Smith |
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| Affiliation: | (1) Department of Materials Science and Engineering, University of Surrey, Guildford, Surrey, GU2 5XH, U.K |
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| Abstract: | Stable matrix crack growth behaviour under mechanical fatigue loading hasbeen studied in a quasi-isotropic (0/90/-45/+45)s GFRPlaminate. Detailed experimental observations were made on the accumulationof cracks and on the growth of individual cracks in +45° as well as 90° plies. A generalised plain strain finiteelement model of the damaged laminate has been constructed. This model hasbeen used to relate the energy release rate of growing cracks to the crackgrowth rate via a Paris relation. |
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| Keywords: | quasi-isotropic laminates off-axis fatigue crack growth energy release rate finite element analysis |
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