Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Development of Laser-Based Resonant Ultrasound Spectroscopy(Laser-RUS) System for the Detection of Micro Crack in Materials

재료의 미세결함 검출을 위한 레이저 공명 초음파 분광(Laser-RUS)시스템 개발

  • 강영준 (전북대학교 기계설계공학부) ;
  • 김진수 (한국원자력연구원 양자광학연구부) ;
  • 박승규 (한국원자력연구원 양자광학연구부) ;
  • 백성훈 (한국원자력연구원 양자광학연구부) ;
  • 최낙정 (전북대학교 기계설계공학부)
  • Published : 2010.01.01
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Abstract

Non-contacting, laser-based resonant ultrasound spectroscopy (L-RUS) was applied to characterize the microstructure of a material. L-RUS is widely used by virtue of its many features. Firstly, L-RUS can be used to measure mechanical damping which related to the microstructural variations (grain boundary, grain size, precipitation, defects, dislocations etc). Secondly, L-RUS technology can be applied to various areas, such as the noncontact and nondestructive quality test for precision components as well as noncontact and nondestructive materials characterization. In addition, L-RUS technology can measure the whole field resonant frequency at once. In this paper, we evaluated material characteristics such as resonant frequency, nonlinear propagation characteristic through the development of Laser-Based Resonant Ultrasound spectroscopy (Laser-RUS) System for the detection of Micro Crack in Materials.

Keywords

References

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