碳纤维复合材料雷电损伤预测  

Lightning Damage Prediction of Carbon Fiber Composite Materials

作　　者：司晓亮 李志宝 刘辉平[2] 仇善良[2] 段泽民[1,2] 

机构地区：[1]强电磁环境防护技术航空科技重点实验室,合肥230031 [2]合肥工业大学电气与自动化工程学院,合肥230009

出　　处：《高电压技术》2017年第5期1453-1459,共7页High Voltage Engineering

基　　金：预研基金(9140A33010314HK85466)~~

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。Compared with traditional metal materials, carbon fiber composite materials are more sensitive to lightning, and the damage caused by lighting is even more serious. So, carbon fiber composite materials must be tested to meet the specific requirements of lightning protection design. The experiments were carried out by referring to the relevant stand- ards. Firstly, the prediction model of lightning damage was established based on the damage data, which could be obtained by ultrasonic testing. Then, the influences of lightning environment parameters on the properties of carbon fiber composite material were analyzed based on the model, and the corresponding damage characteristic curve was obtained. Finally, the breakdown characteristics of carbon fiber composite materials under two kinds of lightning protection mode, which were flame spraying aluminum protective mode and laying aluminum mesh surface protective mode, were ana- lyzed through the model comparison. The results show that the depth of damiage is affected by the action integral and charge quantity, and the maximum damage depth increases monotonically with the increase of the action integral and the charge quantity. When the volume of charge quantity remains unchanged at 150 C, the breakdown threshold of the action integral of the former model is about 1.801 ×106 A2s, which is larger than that of the latter one, 1.0× 106 A2s. When the ac- tion integral remains unchanged at 1.5× 106 A2s, the breakdown threshold of the charge quantity of the former model is about 289.87 C, which is larger than that of the latter one, 97.50 C. So it is revealed that the protective effect of the former model is better than the latter.

关 键 词：复合材料 雷电流 损伤模型 无损探伤 参数优化 击穿阈值 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ342.742[化学工程—化纤工业]