Abstract
Cyclic tests were conducted on [±45]2s angle ply carbon-epoxy specimens using stress ratios R (minimum/maximum stress) of 0.1 and -1.0. Damage was monitored by measuring progressive strain changes in the loading direction. The fatigue damage parameter was found to satisfactorily describe the evolution of damage throughout life. Two stages of damage evolution were identified. In Stage I, the fatigue damage parameter and the density of matrix microcracking rapidly increased to a level dependent upon the stress. This was followed by Stage II, a long period (90% life) of gradual increase in damage, involving crack coalescence, debonding and delamination.
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© 2014 TMS (The Minerals, Metals & Materials Society)
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Plumtree, A. (2014). Fatigue Damage in Carbon Fibre Epoxy Composite Under Variable Loading Conditions. In: TMS 2014: 143rd Annual Meeting & Exhibition. Springer, Cham. https://doi.org/10.1007/978-3-319-48237-8_79
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DOI: https://doi.org/10.1007/978-3-319-48237-8_79
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48593-5
Online ISBN: 978-3-319-48237-8
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