長い超音波導波体を用いた軸方向伝搬ガイド波による高温パイプ非破壊検査システムの検討

抄録

Corrosion inspection of high temperature pipes for heat exchange installed in gas turbine buildings is important for safe operation management. Ultrasonic inspection is one of the promising inspection methods, but ultrasonic sensor systems are vulnerable to high temperatures. In this research, we aim to use an ultrasonic sensor system in a normal temperature environment by using a long waveguide to overcome this problem. For that purpose, we report the results of the ultrasonic sensor ability installed in the long waveguide, the propagation characteristics of the waveguide, and the ultrasonic wave characteristics from the waveguide to the pipe.