Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A Study on Improving Reliability of Durability Life Estimation for Excavator Fuel Tank Mounting Using Equivalent S-N Curve Method

등가 S-N 선도 모형에서의 굴착기 연료탱크 마운팅부 내구수명 예측 신뢰성 향상 방안 연구

  • 이성원 (동아대학교 기계교육과) ;
  • 정진욱 (동아대학교 기계공학과) ;
  • 김성재 (동아대학교 기계공학과)
  • Received : 2021.01.08
  • Accepted : 2021.02.17
  • Published : 2021.05.31
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Abstract

It is challenging to estimate the fatigue life of construction equipment consisting of a welded joint using field structure test owing to the uncertainty of the S-N curve. IIW recommends different S-N curves for various welded joint types. However, there is no way to define an appropriate curve considering complex design shape and strain gauge characteristics. This paper proposes an equivalent S-N curve method based on the relationship between IIW effective notch stress and virtual stress using finite element analysis. Moreover, a case study was conducted for the excavator fuel tank. The proposed method is expected to enhance accuracy and consistency in calculating the fatigue life for the welded structure of construction equipment.

Keywords

Acknowledgement

이 논문은 2021년도 정부 (산업통산자원부)의 재원으로 한국산업기술진흥원의 지원을 받아 수행된 연구임(P0002092,2021년 산업혁신인재성장지원사업)

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