纤维增强复合材料在飞行器和交通设备等制造工业中越来越广泛的应用对该材料的探伤技术提出了高分辨率、高对比度的要求。将传统探伤技术应用于该复杂的材料存在各自的技术瓶颈，如：分辨率不高、对比度不足等。本课题拟基于热声多物理现象，结合超声和电磁波探伤技术各自的优点，突破传统探伤技术的瓶颈，建立兼具高分辨率和高对比度的碳纤维增强复合材料探伤技术。主要研究内容：1）研究电磁波照射碳纤维增强复合材料激发热声现象产生超声波的理论描述和分析方法，建立准确的理论描述和分析模型；2）基于时间反演算法，构建适用于碳纤维增强复合材料的热声多物理探伤技术，研究该技术对不同损伤的探测准确度，探测损伤的形状、尺寸和位置等；3）基于实测数据，研究本课题所构建的碳纤维增强复合材料探伤技术的稳定性。该项目的完成将对完善碳纤维增强复合材料的探伤技术以及提高我国碳纤维增强复合材料部件的质量检测技术水平具有重要的科学和实际应用意义。

The fiber-reinforced composite materials are increasingly used in aerospace, naval and automotive industries, which requires non-destructive testing (NdT) methods with high resolution and contrast for detecting defects and faults in the parts made from composite materials. Different difficulties exist in traditional NdT methods, e.g. low resolution and contrast etc. This project will combine the ultrasound and electromagnetic testing methods via thermo-acoustic phenomenon to provide an NdT method with both high resolution and contrast for carbon fiber-reinforced composites. The main research contents include: 1) The research on mechanism analysis of and the numerical methods development for the phenomenon of illuminating the carbon fiber-reinforced composite materials by microwave to produce ultrasonic wave; 2) Based on the principle of time-reversal method, develop the non-destructive testing method for carbon fiber reinforced composites; 3) The research on stability and accuracy of the developed thermo-acoustic tomography method for carbon fiber-reinforced composites via using the practically measured ultrasonic signal. The successful accomplishment of this project is of significance on improving the NdT of fiber-reinforced composites and the national NdT technique level of testing the parts made from fiber-reinforced composites.