Damage characterization in thin-ply composite laminates under out-of-plane transverse loadings

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• 作者：Tomohiro Yokozeki ; Akiko Kuroda ; Akinori Yoshimura ; Toshio Ogasawara ; Takahira Aoki
• 关键词：Laminates ; Transverse loading ; Delamination ; Fiber failure ; Thin-ply prepreg
• 刊名：Composite Structures
• 出版年：2010
• 出版时间：December 2010
• 年：2010
• 卷：93
• 期：1
• 页码：49-57
• 全文大小：2585 K

文摘

Composite laminates with thin-ply layers are expected to exhibit superior damage resistance to the standard composite laminates. This study investigated the damage characteristics of carbon fiber/toughened epoxy thin-ply laminates subjected to transverse loadings. Quasi-isotropic laminates were prepared using both standard prepregs and thin-ply prepregs in order to examine the effect of ply thickness on the damage accumulation processes. Clear difference on damage accumulation process between standard laminates and thin-ply laminates was identified; fiber fractures were susceptible to formation in thin-ply laminates. Finally, the reason of the difference on damage process was investigated using finite element analyses, and it was clarified that the accumulated delamination position has a significant effect on the fiber fractures during the indentation.