한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)
- 제14권10호
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- Pages.119-126
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- 1997
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- 1225-9071(pISSN)
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- 2287-8769(eISSN)
선 집속 초음파 현미경을 이용한 음탄성효과 측정에 의한 응력 평가
Stress Evaluation by the Measurement of Acoustoelastic Effect Using a Line-Foucus Acoustic Microscope
초록
The relationship between the applied stresses and the change of elastic wave velocity has been established based on the acoustoelasticity theory. The non-uniform stress field in a loaded specimen has been evaluated from the surface acoustic wave velocity measured by the line-focus acoustic microscopy with the acoustoelastic constants obtained form a calibration test. The evaluated stresses are in good agreement with the results calculated by finite element method.