Abstract
Matrix cracking behaviour of a set of glass/epoxy composite laminates having the [0/θ]s geometry has been investigated. The off-axis angle θ takes the value of 45°, 60°, 75° and 90° respectively. Incremental tensile tests were conducted where at each load increment the stiffness change was measured and the cracking sequence photographed. A novel technique using image analysis was used to measure the crack length and digitize the crack pattern. Stiffness loss is correlated with the matrix crack growth. The total strain energy release rate, G 101, associated with the onset and propagation of matrix cracks in the off-axis plies was determined using a compliance relationship. Matrix cracking resistance curves (R-curves) which were generated using the calculated G values are presented.
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© 1991 Elsevier Science Publishers Ltd
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Lee-Sullivan, P., Poursartip, A. (1991). Stiffness Change and R-Curve Behaviour Due to Matrix Cracking in Off-Axis Plies of Glass/Epoxy Laminates. In: Teoh, S.H., Lee, K.H. (eds) Fracture of Engineering Materials and Structures. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3650-1_21
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DOI: https://doi.org/10.1007/978-94-011-3650-1_21
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-85166-672-0
Online ISBN: 978-94-011-3650-1
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