Comparison of Cumulative Damage Models by predicting Fatigue lives of Aircraft Flaperon Joint

손상누적모델의 비교를 통한 플래퍼론 연결부의 피로수명 예측

  • 박태영 (한국항공대학교 항공우주 및 기계공학부) ;
  • 박정선 (한국항공대학교 항공우주 및 기계공학부)
  • Published : 2009.12.31

Abstract

This paper deals with the lifetime prediction of Aircraft Flaperon Joint made of AISI 4130 steel. Reviews are performed on the published damage models at first. And three different damage models are used for predicting the fatigue life of the structure subjected to variable amplitude fatigue loading. These models require no increase in complexity of use, nor do they require additional material property or mission loading information to achieve the improved accuracy. Finally a comparison among the fatigue results is performed. It is observed that the Miner's rule could predict longer life than other cumulative damage models which take into account loads below the endurance limit.

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