微小缺陷检测用超声高频聚焦探头北京航空材料研究院周愉仙，梁菁，徐可北高频超声检测技术是８０年代中期发展起来的检测材料中微小缺陷的新技术，而高频超声水浸点聚焦窄脉冲探头是该技术应用的关键。用于微小缺陷检测的超声波探头，对于材料内部声阻抗值有局部微小变化... Ultrasonic High Frequency Focusing Probe for Detection of Micro Defects Beijing Institute of Aeronautical Materials Zhou Yuxian, Liang Jing, Xu Kebei High frequency ultrasonic testing technology is a new technology developed in the mid-1980s to detect micro defects in materials. However, Focusing on narrow pulse probes is the key to this technology. Ultrasonic probe for detection of minor flaws with slight local changes to acoustic impedance values ​​inside the material ...