Effects of braiding architectures on damage resistance and damage tolerance behaviors of 3D braided composites

复合材料 材料科学 损伤容限 复合数 抗冲击性 纤维 压缩(物理) 复合材料层合板 结构工程 工程类
作者
Di Zhang,Xitao Zheng,Zhibang Wang,Tianchi Wu,Ahmed Sohail
出处
期刊:Composite Structures [Elsevier BV]
卷期号:232: 111565-111565 被引量:57
标识
DOI:10.1016/j.compstruct.2019.111565
摘要

The primary goal of this research is to present a systematic study on the damage resistance and damage tolerance behavior of three-dimensional (3D) braided composites. Therefore, the low velocity impact (LVI) and compression after impact (CAI) tests of 3D braided composites with eight different braiding architectures and a traditional two-dimensional (2D) laminated composite were carried out. The transient impact force response demonstrates that for 3D braided composites, fiber and matrix work as a whole to withstand impact loads and exhibit a progressive failure process, which is a very different phenomenon from the 2D laminates. The damage morphologies of 3D braided composites are obviously different, for 3D four-directional and 3D five-directional composites the damage patterns are in fusiform shape, and in the case of 3D six-directional and 3D seven-directional braided composites, damage patterns exhibit cross-shape. The energy absorption rates of 3D braided composites are 3.53–7.6% lower than 2D laminate, which means less impact energy has been dissipated by matrix and fiber damage. The comparison of LVI damage parameters and CAI shows that 3D5d-A has better damage resistance and damage tolerance.
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