通过改变加热时间，制作了不同热损伤程度的碳纤维复合材料试件。利用涡流检测技术，对正常试件和热损伤碳纤维复合材料试件的不同位置进行了涡流阻抗信号变化轨迹的检测，比较分析了不同检测频率下的涡流阻抗变化轨迹。结果表明：涡流检测技术可有效检测出碳纤维复合材料的热损伤，涡流阻抗信号变化轨迹随热损伤程度的不同呈规律性变化；随着检测频率的升高，热损伤的涡流阻抗信号越稳定。研究可为今后采用该技术对碳纤维复合材料的热损伤进行检测及确定热损伤范围提供参考。

Carbon fiber composites with different degrees of thermal damage were fabricated by changing the heating time. The eddy current impedance signal trajectories of carbon fiber composite specimens with different thermal damage degrees and normal specimens were respectively tested by eddy current detection technology. The change trajectories of eddy current impedance at different test frequencies are compared and analyzed. The test results show that the eddy current detection technology can effectively detect the thermal damage of carbon fiber composites, and the trajectory of eddy current impedance signals change regularly with the degree of thermal loss. With the increase of detection frequency, the more stable the eddy current impedance test signal is, the more effective the test is. The study provides a reference for the future use of this technology to detect the thermal damage of carbon fiber composites and determine the range of thermal loss.