Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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The Static Overload Effect Estimations on Fatigue Strength by The Measurement of Local Strain Variation at The Weldment Toe

용접 토우부의 국부적 변형률 측정을 통한 용접부의 정적 과하중에 따른 피로강도의 변화 평가

  • 이현우 (부산대학교 기계기술연구소) ;
  • 김주환 ((주)현대 중공업, 부산대학교 대학원) ;
  • 김현재 (부산대학교 기계설계공학과)
  • Published : 2001.06.01
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Abstract

Fatigue strength of the welding structure is governed by the residual stress at the weldment toe and static tensile overloads were known as relieving the residual stresses. In this study, static tensile overloads were applied to the welding structures which caused the relief of residual stresses. The amount of residual stress relief was found as proportional to the change of fatigue limit at the given conditions. Based on the fact of the proportionality between the change of fatigue limit and that of residual stress, simple measurement technique is proposed. Modified stress-life curves base on proposed technique gave good agreement with test results.

Keywords

References

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