简要介绍了超声热成像检测方法的基本原理和特点。该方法利用激励超声波在缺陷处产生机械振动，使缺陷处因热弹效应和滞后效应等原因释放出热量，用红外热像仪对此局部发热过程进行监测，最后对图像进行分析。由于激励信号的频率调制和特殊的图像处理方法，超声热成像检测法优势独特。对某航空碳纤维增强复合材料的检测表明，该方法能有效检测出裂纹、分层或破裂等缺陷，应用前景广阔。

Basic principles and characteristics of ultrasound excited thermography testing were introduced. The excited ultrasound could produce mechanical vibration at the defect. Because of the thermo-elastic effect and hysteresis effect, the defect location would release heat. At last, the heat releasing process was monitored by the infrared thermography and the infrared image was analyzed with a special software. Because of the modulating function of excited signal frequency and special image process, ultrasound excited thermography had some unique advantages. Testing on the aero material such as carbon fiber reinforced composite showed that this method could detect the defects such as crack, delamination and break effectively, and had a widely application prospect.