Visualization of Ultrasonic Wave Propagation in Solids by the Sensitive Tint Method

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  • HOSAKA Yoshito
    Graduate School of Engineering and Resource Science, Akita University
  • IMANO Kazuhiko
    Graduate School of Engineering and Resource Science, Akita University

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Other Title
  • 鋭敏色法による固体中を伝搬する超音波伝搬の可視化
  • エイビンショクホウ ニ ヨル コタイ チュウ オ デンパン スル チョウオンパ デンパン ノ カシカ

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Abstract

Visualization of 1MHz burst sine and pulsed ultrasonic wave propagation in the glass by using strobe photoelastic system introducing the sensitive tint method is carried out to improve the understanding of the sound field. Acoustic field data obtained by the system was captured by the CMOS camera and they were processed with integration, subtraction and normalization to enhance the S/N and contrast of the images. As the result, ultrasonic propagation of wavefront is clearly visualized in the low level excitation. Moreover, sign of positive and negative of ultrasonic sound pressure can be successfully identified in red and green, respectively.

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