碳纤维增强聚合物基复合材料(Carbon Fiber Reinforced Polymer, CFRP)具有轻质高强、耐腐蚀、可设计性强等特点，广泛应用于航空航天等领域。不同于金属材料，CFRP导电性差且具有显著的各向异性，导致CFRP对雷电环境更敏感，易于因雷击而发生灾难性的结构破坏。本项目采用实验研究、理论分析、有限元模拟和优化设计相结合的方法，系统地揭示在雷电通道的电-热-力综合作用下CFRP温度-热反应程度-材料微观结构参数-物理力学性能参数-损伤类型及其程度的耦合关系和协同演变规律，定量且准确地研究CFRP雷击烧蚀与力学损伤行为，进而比较CFRP的多种雷电防护结构的防护效果，建立CFRP雷电防护的优化设计系统，从而精细设计CFRP功能组分及多层次结构，最终实现CFRP雷电防护结构的轻量化、高效化和低成本设计。本项目将促进CFRP在飞机、航天器、高铁、风电等领域中的安全可靠应用。

Carbon fiber reinforced polymer (CFRP) composites are widely used in the fields of aeronautics and astronautics due to such excellent characteristics as high specific strength and modulus, good corrosion resistance and outstanding designability. Compared with metallic materials, CFRPs exhibit poor electrical conductivity and obvious anisotropy, which makes aircraft much more sensitive to lightning environment. This project intends to combine experimental research with theoretical analysis, numerical simulation and optimal design, systematically revealing the coupled relationship and collaborative evolution rule among temperature, thermal reaction degree, material microstructural parameters, physical and mechanical property parameters, damage type and its content, as for CFRPs which are under comprehensive impacts of electrical-thermal-mechanical factors. The ablation and mechanical damage of CFRPs subjected to lightning strike will be analyzed quantitatively and precisely so as to compare the protective effects of several kinds of lightning protection structures of CFRPs. Then the optimal design system of CFRPs for lightning protection will be set up by means of elaborately designing the functional components of composite materials as well as the multi-scale structures. Ultimately the light weight and high efficiency and low cost of CFRPs with lightning protection structure will be realized. This project will contribute to the reliable application of CFRPs in aircraft, high-speed train and wind turbine blade.