Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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A Study on Prediction of Fatigue Damage Crack Growth for Stiffener Bonded Composite Laminate Panel

보강재 본딩접합 복합재 적층판구조 피로손상 균열진전 수명예측에 대한 연구

  • 권정호 (울산대학교 기계공학부 항공우주공학전공) ;
  • 정성문 (울산대학교 항공우주공학과 대학원)
  • Received : 2012.12.04
  • Accepted : 2013.04.15
  • Published : 2013.04.30
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Abstract

The prediction and analysis procedure of fatigue damage crack growth life for a stiffener bonded composite laminate panel including center hole and edge notch damage, was studied. It was performed on the basis of fatigue damage growth test results on a laminated skin panel specimens and the analysis results of stress intensity factor for the stiffener bonded composite panel. According to the comparison between experimental test and prediction results of fatigue damage growth life, it was concluded that the residual strength and damage tolerance assessment can be carried out along to the edge notch crack growth.

본 연구에서는 적층판 시편의 피로손상 균열진전 시험결과와 적층보강판 구조의 응력강도 해석결과를 기초로 충격손상을 모사한 원공과 노치손상을 내재한 보강재 본딩접합 적층보강판 구조의 피로손상 균열진전 수명예측에 대하여 고찰하였다. 그리고 적층보강판 구조시편에 대한 손상허용 시험결과와 손상진전 수명예측 해석결과를 비교분석한 결과 손상균열 길이 변화에 따라 최종파단에 대한 잔여강도를 예측하고 손상허용성 평가를 할 수 있었다.

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References

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