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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 |
| Affiliation: | (1) Department of Materials Science and Engineering, University of Surrey, GU2 5XH Guildford, Surrey, UK;(2) Present address: Department of Mechanical and Manufacturing Engineering, University of Portsmouth, Anglesea Road, Anglesea Building, P01 3DJ Portsmouth, UK |
| Abstract: | Stable matrix crack growth behaviour under mechanical fatigue loading has been studied in a quasi-isotropic (0/90/-45/+45)s GFRP laminate. Detailed experimental observations were made on the accumulation of cracks and on the growth of individual cracks in +45° as well as 90° plies. A generalised plain strain finite element model of the damaged laminate has been constructed. This model has been used to relate the energy release rate of growing cracks to the crack growth rate via a Paris relation. |
| Keywords: | quasi-isotropic laminates off-axis fatigue crack growth energy release rate finite element analysis |
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