Determination of Residual Stress by the Hole Drilling Method Based on Displacement Measurement

변위 측정을 기본으로 한 구멍뚫기방법에 의한 잔류응력 측정 방법

  • 신동일 (청주기계공업고등학교) ;
  • 주진원 (충북대학교 공과대학 기계공학과)
  • Published : 2005.11.01


This paper presents the numerical procedure for calculating non-uniform residual stresses based on relieved displacements obtained from incremental hole drilling. The relationship between the in-plane displacement produced by introducing a blind hole and the corresponding residual stress is established. Finite element calculations are described to evaluate the relieved coefficients required for the determination of non-uniform residual stresses. Validity of the proposed method has been tested through three axisymmetric test examples and two three-dimensional examples. As a result of . simulation on the test examples, it is found that this numerical procedure is well adopted to measuring non-uniform residual stress in the full hole depth range of the hole diameter from the surface. The accuracy of the hole drilling method with displacement measurement is discussed, comparing tile method with strain measurement


Hole Dilling Method;Residual Stress;Relieved Displacement;Relaxation Coefficient


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