2612 加熱材料内部の温度プロファイルの超音波モニタリング(S22-3 非破壊評価とモニタリング(3),S22 非破壊評価とモニタリング)

概要

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We have proposed a new ultrasonic method for measuring internal temperature distribution of heated materials. The principle of the method is based on temperature dependence of the velocity of the ultrasonic wave propagating through the material. An inverse analysis method using a finite difference model has been developed to determine one-dimensional temperature distribution in a heated plate. To demonstrate the practical feasibility of the developed method, a single side of a steel plate of 30mm thickness is heated by molten aluminum and ultrasonic pulse-echo measurements are then performed for the steel during heating. The propagation time of ultrasonic wave in the heated steel is measured and used to determine the temperature distribution of the steel. The internal temperature distributions determined ultrasonically agree well with those obtained using thermocouples installed in the steel.
一般社団法人日本機械学会の論文
2007-09-07