Fatigue of quasi-isotropic composite cylinders under tension-tension loading
Journal Article
·
· Journal of Reinforced Plastics and Composites; (United States)
- West Virginia Univ., Morgantown (United States)
A tension fatigue life prediction methodology based on a through-thickness damage accumulation model is used to predict the fatigue failure of composite coupon specimens. Its applicability to thin-walled cylindrical specimens is investigated by comparing the fatigue behavior of composite coupon specimens to that of composite thin-walled cylindrical specimens. AS4/3501-6 graphite-epoxy coupon specimens and thin-walled cylinder specimens with the same layup sequence of (0/+/- 45/90)s were tested under static and fatigue loading conditions. Reasonably good agreement is found between the measured and predicted lives of the coupon specimens. Although the ultimate stresses of coupon and cylindrical specimens are different, it is observed that their fatigue lives at the same percentage of ultimate stress are nearly identical, independent of the coupon edge effect. 23 refs.
- OSTI ID:
- 6838426
- Journal Information:
- Journal of Reinforced Plastics and Composites; (United States), Journal Name: Journal of Reinforced Plastics and Composites; (United States) Vol. 11:11; ISSN 0731-6844; ISSN JRPCDW
- Country of Publication:
- United States
- Language:
- English
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