J042053 超音波による材料内部温度プロファイリングの高精度化に関する検討([J04205]超音波計測・解析法の新展開(5))

概要

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Measuring internal temperature distributions of a heated material is an important issue in the field of material science and engineering. This is because such temperature distribution often plays an important role in understanding the behavior of materials being processed at high temperature. In our previous work, an ultrasonic technique providing effective measurements of internal temperature profiles of heated materials has been developed and its potential is demonstrated experimentally. In this work, the use of shear wave is attempted to measure internal temperature profile of a heated steel using the ultrasonic technique. It is expected that the use of shear wave may be effective to improve the accuracy in determining temperature because of its relatively slower velocity. An experiment with both longitudinal and shear wave transducers has demonstrated. Two temperature distributions obtained using the longitudinal and shear waves are compared with each other. Although those results almost agree with that obtained using thermocouples, the result using shear wave is not always better than that using longitudinal wave. This is because of the deterioration of the shear wave signal during heating.
一般社団法人日本機械学会の論文
2011-09-11