항공우주시스템공학회지 (Journal of Aerospace System Engineering)

  • 제15권2호
  • /
  • Pages.16-25
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  • 2021
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  • 1976-6300(pISSN)
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  • 2508-7150(eISSN)
항공우주시스템공학회 (The Society for Aerospace System Engineering)
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Reliability analysis on fatigue Strength for Certification of Aircraft Composite Structures

  • Choi, Cheong Ho (KIAST, Aviation Certification Division, Aviation Certification Department) ;
  • Lee, Doo Jin (KIAST, Aviation Certification Division, Aviation Certification Department) ;
  • Jo, Jae Hyun (KIAST, Aviation Certification Division, Aviation Certification Department) ;
  • Bae, Sung Hwan (KIAST, Aviation Certification Division, Aviation Certification Department) ;
  • Lee, Myung Jik (KIAST, Aviation Certification Division, Aviation Certification Department) ;
  • Lee, Jong Ho (KIAST, Aviation Certification Division, Aviation Certification Department)
  • 투고 : 2020.09.15
  • 심사 : 2021.03.05
  • 발행 : 2021.04.30
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초록

Reliability of fatigue strength on Aircraft Composites(GFRP) Structures was assessed in this paper. Fatigue strength of GFRP was used through the existing fatigue test data with Monte Carlo method. The Sa-Nf curve of composites fatigue strength was assumed as normal distribution and reliability was analyzed using SSIT model. Fatigue stress was designed IAW ASTM F3114-15 with special safety factor of Ssf=1.2~2.0. Reliability was calculated by analytic method and FORM. Sensitivity for the effect of mean and standard deviation of fatigue strength as well as fatigue stability was evaluated. This result can be usefully applied to reliability and fatigue design for composite structures of light weight aircraft.

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과제정보

This work was supported by KIAST(Korea Institute of Aviation Safety Technology) and the writers are grateful for this support.

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