材料科学
复合材料
环氧树脂
雷击
复合数
分层(地质)
电阻率和电导率
断裂韧性
导电体
纤维
韧性
复合材料层合板
闪电(连接器)
碳纤维增强聚合物
破损
涂层
避雷器
工程类
功率(物理)
古生物学
物理
电气工程
生物
构造学
量子力学
俯冲
作者
Hui Liu,Yunli Guo,Yong Zhou,Guoshun Wan,Zhongli Chen,Yuxi Jia
摘要
The poor lightning strike resistance limits the application of carbon fiber-reinforced polymer (CFRP) composites in aircraft. Multifunctional fiber composites can reduce lightning strike damage by improving interlaminar mechanical properties and electrical conductivity. In this study, nickel-coated carbon fiber (NiCF) veil was explored as a functional interleaf of CFRP composites to simultaneously improve the interlaminar fracture toughness (GIC by 74.75% and GIIC by 36.22%) and through-thickness electrical conductivity (by 220.49%). The toughening mechanisms of NiCF veils mainly include the pull-out, debonding, and breakage of NiCFs, as well as peeling and splitting of nickel coating. The improvement of conductivity is mainly attributed to the increase of conductive paths. Furthermore, the NiCF veil-interleaved laminates still maintained relatively high-electrical conductivity after delamination, which was formulated as a structure–function relationship expression. The interesting finding is beneficial to lightning protection, especially for damaged composites. The NiCF veil is a potential interleaf for structure–function integration of composites, and has the potential to suppress lightning damage to aerostructures.
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