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Damage Characteristics of CFRP Laminates Subjected to Multiple Lightning Current Strike
Applied Composite Materials ( IF 2.3 ) Pub Date : 2018-12-12 , DOI: 10.1007/s10443-018-9747-4
Jinru Sun , Xueling Yao , Xiangyu Tian , Jingliang Chen , Yi Wu

The lightning damage depths and areas of carbon fiber reinforced polymer (CFRP) laminates subjected to multiple continuous sequential lightning current components with different timing combinations were experimentally evaluated. The experimental results indicated that the CFRP laminates suffered serious lightning damage, including fracture of the carbon fibers and layer delamination. After a multiple lightning strike composed of lightning components A, B and C, the surface temperature of the CFRP laminates, which was projected from the measured temperature with lower magnitude, can exceed 1600 °C. The damage area and depth were approximately 2790 mm2 and 1.28 mm in the “ABCD” test mode. The damage depth was found to be closely related to lightning components A, B and D, which are accompanied by the shockwave and the overpressure effect, the dielectric breakdown effect and the local thermal effect. The increases in the surface temperature and damage area after lightning strike were mainly affected by the lightning component C with substantial thermal effect. The application sequence and material properties are important factors for evaluating the damage effect of the newly added lightning component on samples that have suffered from multiple continuous lightning components. The influencing factors and analysis method for CFRP laminate lightning damage subjected to multiple continuous sequential lightning components may provide both experimental support and a theoretical basis for studying the mechanism of the lightning effect and the refinement and improvement of a lightning direct effect test method for CFRP laminates in the future.



中文翻译:

多次雷电流冲击下CFRP层压板的损伤特性

实验评估了碳纤维增强聚合物(CFRP)层压板经受不同时序组合的多个连续连续雷电电流分量的雷击破坏深度和面积。实验结果表明,CFRP层压板遭受了严重的雷击损坏,包括碳纤维断裂和分层。在由雷电成分A,B和C组成的多次雷击之后,CFRP层压板的表面温度(从测得的温度以较低的幅度预测)可能超过1600°C。损坏区域和深度约为2790 mm 2在“ ABCD”测试模式下为1.28毫米。发现损伤深度与雷电分量A,B和D密切相关,并伴有冲击波和超压效应,介电击穿效应和局部热效应。雷击后表面温度的升高和损坏区域的增加主要受到具有显着热效应的雷电成分C的影响。施用顺序和材料性能是评估新添加的闪电组分对遭受多个连续闪电组分破坏的样品的破坏效果的重要因素。

更新日期:2018-12-12
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