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日本电力中央研究所研制成,可以自动探查出发电厂中磁性汽轮机等金属材料微小裂纹的新型高精度超声波探伤装置。新装置使用了更高频率的超声波,因此,可大幅度提高精度,新装置可检测出5～10μm 大小的裂纹。在该装置的尖端处可发射出平均20MHz 的超声
Japan’s National Research Institute of Power developed into a new type of high-precision ultrasonic flaw detection device that can automatically detect the tiny cracks of metal materials such as magnetic turbines in power plants. The new device uses a higher frequency of ultrasound, therefore, can greatly improve the accuracy of the new device can detect the size of 5 ~ 10μm crack. An average of 20 MHz of ultrasound can be emitted at the tip of the device