碳纤维复合材料雷电损伤预测

发布时间：2018-04-23 00:03

本文选题：复合材料 + 雷电流　；参考：《高电压技术》2017年05期

【摘要】：相对于传统金属材料,碳纤维复合材料对雷电更加敏感,雷电损伤更为严重,必须通过雷电防护试验验证其雷电防护能力。因此根据标准开展试验,试验后通过无损探伤检测得到损伤数据,并建立了碳纤维复合材料雷电损伤预测参数模型。然后依据该模型进一步分析了雷电环境参量对碳纤维复合材料特性的影响,得出相应的损伤特性曲线。最后通过模型对比分析了火焰喷涂铝防护方式和表面铺设铝网防护方式下碳纤维复合材料的雷电击穿特性。结果表明:损伤深度由作用积分和电荷量共同作用,最大损伤深度随着作用积分和电荷量的增大单调递增。当电荷量保持不变取150C,试验件击穿时前者的作用积分击穿阈值为1.801×10~6A~2s,大于后者的阈值1.0×10~6A~2s;当作用积分保持不变取1.5×10~6A~2s,试验件击穿时前者的电荷量击穿阈值为289.87 C,大于后者的阈值97.50 C。因此可知相同条件下,前者的防护效果更优。
[Abstract]:Compared with traditional metal materials, carbon fiber composites are more sensitive to lightning and more serious to lightning damage. The lightning protection ability must be verified by lightning protection test. Therefore, according to the standard test, the damage data were obtained by NDT, and the model of lightning damage prediction parameters of CFRP was established. Based on the model, the effects of lightning environmental parameters on the properties of carbon fiber composites are further analyzed, and the corresponding damage characteristic curves are obtained. Finally, the lightning breakdown characteristics of carbon fiber composites under the protection of flame sprayed aluminum and aluminum mesh on the surface are compared and analyzed. The results show that the damage depth is affected by the action integral and the charge quantity, and the maximum damage depth increases monotonously with the increase of the action integral and the charge quantity. When the charge value remains constant at 150C, the breakdown threshold of the former is 1.801 脳 10 ~ 6A ~ (2) s, which is larger than that of the latter's (1.0 脳 10 ~ (6) A ~ (2)) s, and the charge breakdown threshold of the former is 289.87 C, which is larger than that of the latter (97.50 C) when the charge value remains unchanged at 1.5 脳 10 ~ (6) A ~ (2) ~ (2) s. Therefore, under the same conditions, the former is better.
【作者单位】：强电磁环境防护技术航空科技重点实验室;合肥工业大学电气与自动化工程学院;
【基金】：预研基金(9140A33010314HK85466)~~
【分类号】：TB332;TQ342.742

【相似文献】