長い導波体を利用した軸方向伝搬ガイド波によるパイプ検査システム
Study of an ultrasonic inspection system by a guide wave traveling to axis direction of a pipe using a long waveguide
著者:
村山 理一 Riichi MURAYAMA
発刊日:
公開日:
Guide waveHeat exchange pipeHigh temperatureLong waveguideNondestructive inspection
概要
Various energy plants use a large number of important equipment and structural members that are continuously operated in a high temperature range exceeding 500 ° C. Monitoring and evaluating their remaining life is an important issue that is directly linked to plant safety and economic efficiency. Non-destructive inspection plays an important role in non-destructively evaluating the soundness of structures and the materials that compose them. Therefore, we have developed a non-destructive inspection system for a high-temperature pipe that uses a long waveguide so that the sensor unit can be implemented in a room temperature environment and uses guided waves propagating in the axial direction. This paper refers to the structure of an electromagnetic acoustic transducer for a Lamb wave and an SH-plate wave attached on a long waveguide, the configuration method of the waveguide, and the detection results of any scratches.
