In-situ damage sensing in intra-ply glass/carbon laminate composites under interlaminar shear loading
In-situ damage sensing in intra-ply glass/carbon laminate composites under interlaminar shear loading
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DOI：
10.1177/00219983211049291
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发表时间：
2021-11-10
影响因子：
2.9
通讯作者：
Chalivendra, Vijaya
中科院分区：
文献类型：
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作者：
Pires, Matthew;Chalivendra, Vijaya
对碳/玻璃混杂层合板和环氧树脂复合材料在准静态层间剪切载荷作用下的原位损伤传感能力进行了实验研究。通过将碳纳米管（CNTs）沿着嵌入环氧树脂基体中并与层内混杂层压板中的碳纤维一起嵌入复合材料内部，在复合材料内部产生三维电传感网络。使用超声处理和剪切混合技术的组合将CNT分散在环氧树脂基质中。四个环形探针被用来检测层间剪切载荷下的电响应。四种不同的层内取向（0-90）（C），其中碳纤维沿着加载方向取向），（（0-90）（G），其中玻璃纤维沿沿着加载方向取向），（（45/-45，其中玻璃纤维和碳纤维以45（o）/-45（o）取向并且重复层压材料），和（（45/-45）（A），其中玻璃纤维和碳纤维的取向为45（o）/-45（o），层合板交替排列））对剪切本构行为和损伤检测的影响。与（0/90）（C）和（0/90）（G）方向相比，（45/-45）和（45/-45）（A）的层内方向显示出更高的层间剪切强度和断裂剪切应变。在所有四个方向中，（45/-45）（A）为损伤感测应用提供了更好的电响应分辨率。
An experimental study is preformed to investigate the in-situ damage sensing capabilities of intra-ply hybrid carbon/glass laminate and epoxy composites under quasi-static interlaminar shear loading. A three-dimensional electrical sensory network is generated inside the composites through embedded carbon nanotubes (CNTs) in an epoxy matrix along with the carbon fibers in the intra-ply hybrid laminates. CNTs are dispersed in the epoxy matrix using a combination of ultrasonication and shear mixing techniques. Four circumferential ring probes are used to examine the electrical response under interlaminar shear load. The effect of four different intra-ply orientations (((0-90)(C), where carbon fibers are oriented along the loading direction), ((0-90)(G), where glass fibers are oriented along the loading direction), ((45/-45, where glass and carbon fibers are oriented at 45(o)/-45(o) and the laminates are repeated), and ((45/-45)(A), where glass and carbon fibers are oriented at 45(o)/-45(o) and the laminates are alternated)) on the shear constitutive behavior and the damage detection are discussed. Intra-ply orientations of (45/-45) and (45/-45)(A) showed higher interlaminar shear strength and shear strain at break compared to (0/90)(C) and (0/90)(G) orientations. Out of all four orientations, (45/-45)(A) provided a better resolution of electrical response for damage sensing applications.