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Prediction of Initiation Location and Direction of Fretting Fatigue Crack

프레팅 피로 균열의 발생 위치 및 방향 예측

  • Huh, Yong-Hak ;
  • R. E. Edwards (Department of Mechanical Engineering, Univ. of Sheffield) ;
  • M.W. Brown (Department of Mechanical Engineering, Univ. of Sheffield) ;
  • E.R. de Ios Rios (Department of Mechanical Engineering, Univ. of Sheffield)
  • 허용학 (한국표준과학연구원 환경안전연구센터) ;
  • ;
  • ;
  • Published : 2003.07.01

Abstract

Governing parameters for determination of the location of crack initiation and direction of crack initiation were investigated by performing fretting fatigue tests and analysis on Al 2024-T351. Fatigue tests were carried out using biaxial fatigue machine. It was shown that the dominant fatigue crack tended to initiate at the outer edge of one of the four bridge pads, growing at an angle beneath a pad, before turning perpendicular to the orientation of the axial load. Distribution of stresses generated during fretting fatigue loading along the interface was calculated by elastic FE simulation. It can be known that the location of crack initiation can be predicted by using the maximum tangential stress range. Futhermore, the crack initiation direction can also be predicted by a maximum tangential stress range.

Keywords

Fretting Fatigue Crack;Crack Initiation Direction;Tangential Stress Range

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Cited by

  1. Evaluation of Fretting Fatigue Behavior for Inconel Alloy at 320℃ vol.35, pp.8, 2011, https://doi.org/10.3795/KSME-A.2011.35.8.951