碳纤维树脂基复合材料电热损伤机理研究

项目名称： 碳纤维树脂基复合材料电热损伤机理研究

项目编号： No.61471364

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 王志平

作者单位： 中国民航大学

项目金额： 86万元

中文摘要： 复合材料结构损伤失效评估一直是航空工业关注的重要问题。电磁感应引起的低强度电流导致的电热损伤是碳纤维复合材料（CFRP）飞机结构特有的、尚未引起足够关注的损伤形式。已有研究表明，电热损伤对CFRP性能影响显著，损伤行为具有很强不确定性。在CFRP在民航飞机主承力结构上的大量应用的背景下，电热损伤已成为航空安全的潜在威胁，其损伤机理研究在国际上已成为CFRP领域的新热点。本项目针对CFRP的电热特性，通过精细控制电流参量的电热载荷加载试验，复合材料界面微纳结构和树脂基体对电热作用的响应观测，深入研究低强度电流导致的电热损伤行为，获取CFRP电热响应及温度场特性，发展电流-温度场-损伤特征参量三者间关联分析方法，揭示损伤机制，建立损伤过程仿真方法，为发展CFRP飞机结构的电热损伤风险评估方法、保障航空安全提供科学依据和技术支撑。

中文关键词： 高分子复合材料；电热损伤；电磁感应

英文摘要： Composite aircraft structural damage and failure assessment has always been the focus of the aviation industry. The electro-thermal damage caused by low intensity current is unique to the structure of carbon fiber reinforced polymer (CFRP) in aircrafts. Former studies have shown that electro-thermal damage has significant influence on CFRP performance, the damaging behavior has much uncertainty. With the significant application of CFRP in main load-bearing structures of civil airliners, the electro-thermal damage is becoming a potential threat against aviation safety, the mechanism study is calling for continued airworthiness amongst global academic circles. Considering the electro-thermal properties of CFRP, electro-thermal loading tests with fine control of the electric current parameters is compiled in this project, and evolution of the interface micro-nano structures and the matrix polymer is observed, in order to investigate the damaging behavior thoroughly. Then, CFRP electro-thermal response and temperature field is gained, the association analysis among current-temperature field-damage characteristics is developed, the CFRP damage mechanism and the and performance will be revealed. Furthermore, damage process simulation method is established. Finally, this project will provide scientific basis and technology support for systematic electro-thermal damage assessment and sustained aviation safety.

英文关键词： polymer based composite;electro-thermal damage;electro-magnetic induction