超声波无损检测技术(UNT)是航空工件检测中应用较多的一种检测方法。本文对航空发动机涡轮叶片进行了超声波无损检测;传统检测是用反射波形和波幅特征分析检测出发动机涡轮叶片缺陷;相控阵超声检测(PAUT)是利用相位延迟达到相控效果,形成清晰的图像,和传统超声波检测相比,更能直观的显示缺陷的位置和形状。 Ultrasonic non-destructive testing (UNT) is one of the most widely used detection methods in aviation workpiece inspection. In this paper, the aero-engine turbine blade is subjected to ultrasonic non-destructive testing. The traditional detection method is to detect the defects of the engine turbine blade by using the reflection waveform and the amplitude characteristic analysis. The phased array ultrasonic testing (PAUT) uses the phase delay to achieve the phased control effect to form a clear image , Compared with the traditional ultrasonic testing, more intuitive display of the location and shape of the defect.