Abstract By using standardized Waveforms C and D, this study explored the lightning strike protection (LSP) effectiveness of nickel coated carbon fiber nonwoven veils (Ni-CFNVs) on protecting the carbon fiber composite structures in Zone 2 (aircraft lightning zoning). The post-lightning damage was evaluated by visual inspection, ultrasonic scan and residual strength test. Results showed that the Ni-CFNV of 70 g/m2 eliminated lightning strike damage inflicted by both waveforms and it even performed better than the commercial expanded copper foil of 73 g/m2. Therefore, the Ni-CFNV will be a promising alternative to metal mesh for eliminating lightning strike damage to the structures in Zone 2. The remarkable LSP effectiveness of Ni-CFNV can be explained by its integration of high electrical conductivity of Ni-coating and prominent ablation resistance of carbon fiber. The experiments indicate that not only the electrical conductivity, but also the ablation resistance of LSP layer greatly influences the LSP effectiveness.

中文翻译：

---

用镀镍碳纤维无纺布面纱消除飞机2区碳纤维复合结构的雷击损伤

摘要 通过使用标准化波形 C 和 D，本研究探讨了镀镍碳纤维无纺布面纱 (Ni-CFNVs) 对区域 2（飞机闪电分区）碳纤维复合结构的雷击保护 (LSP) 有效性。通过目视检查、超声波扫描和残余强度测试来评估雷击后的损伤。结果表明，70 g/m2 的 Ni-CFNV 消除了两种波形造成的雷击损坏，其性能甚至优于 73 g/m2 的商用膨胀铜箔。因此，Ni-CFNV 将是金属网的有前途的替代品，用于消除对 2 区结构的雷击损坏。Ni-CFNV 卓越的 LSP 效果可以通过其结合 Ni 涂层的高导电性和碳纤维的显着抗烧蚀性来解释。实验表明，不仅LSP层的电导率，而且LSP层的烧蚀电阻也极大地影响LSP的有效性。