Influence of internally dropped-off plies on the impact damage of asymmetrically tapered laminated CFRP
Influence of internally dropped-off plies on the impact damage of asymmetrically tapered laminated CFRP
复制标题
内部脱落层数对非对称锥形层合CFRP冲击损伤的影响
DOI：
10.1016/j.compositesa.2014.09.024
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发表时间：
2015
影响因子：
8.7
通讯作者：
C. Minot
中科院分区：
文献类型：
--
作者：
Hakim Abdulhamid;C. Bouvet;L. Michel;Jacky Aboissière;C. Minot
本文对碳/环氧非对称锥形层合板的低速冲击响应进行了实验研究。这些测试是在能量为10到30微焦耳的两种类型的上篮和多层终止的情况下实现的。使用C扫描和显微照片分析了损伤的类型和位置。然后，将该数据与相应的各平层压板的响应进行比较。研究了锥度参数(锥角、落差布置和形状)对冲击损伤机理的影响。在锥形和平面层压板之间发现了非常相似的冲击损伤现象。由于树脂袋引起的材料不连续性的存在对损伤机制的影响小于厚薄层之间的结构差异。
This paper presents an experimental study of low velocity impact response of carbon/epoxy asymmetrically tapered laminates. The tests are realised at energy between 10 and 30 J on two types of layup with multiple terminated plies. The type and localisation of damage are analysed using C-scan and micrographs. Then, the data is compared with the response of corresponding respective plain laminate. The effects of some tapering parameters (taper angle, drop-off disposition and configuration) on the impact damage mechanisms are also investigated. Very similar impact damage phenomena are found between tapered and plain laminates. The presence of material discontinuity due to the resin pocket affects less the damage mechanism than the structural difference between the thick and the thin sections.