利用超声特征扫描成像技术，研制了一套检测双金属转子复合层分层缺陷的设备，实现对双金属转子9个柱塞孔的自动检测。检测结果保存在工控机中，后处理时可以按相位(深度) 特征成像，也可按当量分布特征成像，能准确地将分层缺陷找到，并判断其大小。系统完成后，对实际的样品进行了成像实验，能够得到分层缺陷的各种特征信息，系统稳定性和可重复性高。

An ultrasonic feature scan imaging system used for testing delamination flaw probably existing in the bimetal rotor clad layer was studied and developed. The bimetal rotor with nine column holes could be tested automatically. All the wave train of testing result would be saved in computer for post processing. Various imaging modes, including depth imaging and amplitude imaging, could be used to find delamination flaws accurately and to estimate their size. Imaging experiments for actual work piece was done using the system, and all kinds of feature information were collected. The system was characteristic of high stability and good repeat ability.