Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study on Residual Stress Measurement Using Raman Spectroscopy

라만 분광법을 이용한 잔류응력 측정에 관한 연구

  • Kang, Min-Sung (Department of Mechanical Engineering, Sungkyunkwan Univ.) ;
  • Kim, Sang-Young (Department of Mechanical Engineering, Sungkyunkwan Univ.) ;
  • Park, Soo (Department of Mechanical Engineering, Sungkyunkwan Univ.) ;
  • Koo, Jae-Mean (Department of Mechanical Engineering, Sungkyunkwan Univ.) ;
  • Seok, Chang-Sung (Department of Mechanical Engineering, Sungkyunkwan Univ.)
  • 강민성 (성균관대학교 기계공학부 일반대학원) ;
  • 김상영 (성균관대학교 기계공학부 일반대학원) ;
  • 박수 (성균관대학교 기계공학부 일반대학원) ;
  • 구재민 (성균관대학교 기계공학부) ;
  • 석창성 (성균관대학교 기계공학부)
  • Published : 2010.01.01
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Abstract

A straight pipe is used after complicated bending work in a mechanical system. In this work process, the plastic deformation of the pipe produces residual stress in the pipe. This residual stress significantly affects the behavior of pipe fracture. For this reason, residual stress must be evaluated. Measuring the residual stress of a U-shaped pipe is difficult with existing destructive and nondestructive measurement methods. In this paper, the residual stress of a U-shaped aluminum pipe (99.7% pure aluminum) was evaluated from the Raman shift by Raman spectroscopy and FEM(Finite Element Method, FEM) analysis. The results of the stiffness test by FEM analysis are compared with those by experiments. The analyzed results of the Raman spectra showed a similar tendency with the results of the FEM analysis with respect to the residual stress distributions in U-shaped pipes. Also, the results of the bending tests showed resemblance to each other.

Keywords

References

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