碳纤维复合材料在非破坏性雷电脉冲作用下的等效电路模型  

Equivalent Circuit Model of Carbon Fiber Reinforced Polymer Under Non-destructive Lightning Impulse

作　　者：刘家军[1] 马佳豪 孙伟[2] LIU Jiajun;MA Jiahao;SUN Wei(Institute of Water Resources and Hydro-electric Engineering,Xi＇an University of Technology,Xi＇an 710048,China;State Key Laboratory of Electrical Insulation and Power Equipment,Xi＇an Jiaotong University,Xi＇an 710049,China)

机构地区：[1]西安理工大学水利水电学院,陕西西安710048 [2]西安交通大学电力设备电气绝缘国家重点实验室,陕西西安710049

出　　处：《绝缘材料》2018年第8期75-80,85,共7页Insulating Materials

摘　　要：通过构建在非破坏性雷电冲击下的等效电路模型研究碳纤维复合材料(CFRP)的导电特性。建立了模拟雷电流冲击实验平台,采用4/10μs、8/20μs、30/80μs等冲击雷电流波形,研究不同冲击情况下的动态阻抗曲线、伏安特性曲线。结果表明:材料存在明显的电感特性;冲击电流幅值越大,材料在电流峰值时的阻抗越小;冲击电流的波前时间越短,材料的总体阻抗值越大。等效电阻为非线性变化,冲击电流幅值越大,等效电阻趋于变小,等效电感则趋于稳定值。根据实验结果提出了雷电流冲击作用下CFRP的等效电路模型,可为碳纤维复合材料在航空航天领域的广泛应用提供实验基础。The conductive properties of carbon fiber reinforced polymer（CFRP） were studied by constructing the equivalent circuit model under non-destructive lightning impulse. A simulated lightning current impulse experiment platform was established, the dynamic impedance curves and the volt-ampere characteristic curves under different shock conditions were studied using 4/10 μs, 8/20 μs, and 30/80 μs lightning current waveforms. The results show that the materials have obvious inductance characteristic. The larger the impulse current amplitude, the smaller the impedance at the current peak moment. The shorter the front time of impulse current, the greater the total impedance of material. The equivalent resistance changes nonlinearly, with the increase of impulse current amplitude, the equivalent resistance tends to be smaller,and the equivalent inductance tends to be stable value. An equivalent circuit model of CFRP under lightning impulse was proposed according to the experimental results, which can provide experimental basis for the wide application of carbon fiber reinforced polymer in aerospace.

关 键 词：碳纤维复合材料 雷电流冲击 等效电路模型 隧道效应 导电特性 

分 类 号：TM215[一般工业技术—材料科学与工程]