Proceedings of the Acoustical Society of Korea Conference (한국음향학회:학술대회논문집)

The Acoustical Society of Korea (한국음향학회)
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Residual stress measurement using acoustic microscope

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  • Kim, Hyun (Dept. of Electronic. Engineering Kyunghee Univ.) ;
  • Ko, Dea-sik (Dept. of Electronic. Engineering Mokwon Univ.) ;
  • Jun, Kye-suk (Dept. of Electronic. Engineering Kyunghee Univ.)
  • 김현 (경희대학교 전자공학과) ;
  • 고대식 (목원대학교 전자공학과) ;
  • 전계석 (경희대학교 전자공학과)
  • Published : 1998.11.01
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Abstract

In this paper, we have studied measurement technique for inhomogeneous residual stress using acoustic microscopy with quadrature detector. In experiment, aluminum tensile specimen with the flaw has been made and loaded by Instrone. A spherical typed acoustic transducer of center frequency 5MHz has been used for sending a longitudinal acoustic wave into a stressed specimen. It has been shown in experimental results that the phase has largely changed around the flaw that residual stress has been largely distributed and acoustic microscopy has been used in the field of residual stress measurement.

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