Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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A study on Application of Probabilistic Fatigue Life Prediction for Aircraft Structures using the PoF based on Bayesian Approach

베이지안 기반의 파손확률을 이용한 항공기 구조물 확률론적 피로수명 예측 응용에 관한 연구

  • 김근원 (국방대학교 국방과학학과) ;
  • 신대한 (항공대학교 항공우주 및 기계공학부) ;
  • 최주호 (항공대학교 항공우주 및 기계공학부) ;
  • 신기수 (국방대학교 국방과학학과)
  • Received : 2013.05.30
  • Accepted : 2013.08.16
  • Published : 2013.10.05
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Abstract

The probabilistic fatigue life analysis is one of the common methods to account the uncertainty of parameters on the structural failure. Frequently, the Bayesian approach has been demonstrated as a proper method to show the uncertainty of parameters. In this work, the application of probabilistic fatigue life prediction method for the aircraft structure was studied. This effort was conducted by using the PoF(Probability of Failure) based on Bayesian approach. Furthermore, numerical example was carried out to confirm the validation of the suggested approach. In conclusion, it was shown that the Bayesian approach can calculate the probabilistic fatigue lives and the quantitative value of PoF effectively for the aircraft structural component. Moreover the calculated probabilistic fatigue lives can be utilized to determine the optimized inspection period of aircraft structures.

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References

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