Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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A Study on Compressive Strength of Carbon/epoxy Composite Structure Repaired with Bonded Patches after Impact Damage

충격 손상된 카본/에폭시 복합재 구조의 패치 접착 보수 방안 적용 후 압축 강도 특성 평가

  • 공창덕 (조선대학교 항공우주공학과) ;
  • 박현범 (조선대학교 항공우주공학과) ;
  • 임성진 (조선대학교 항공우주공학과) ;
  • 신철진 (한국항공우주산업(주))
  • Published : 2010.10.30
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Abstract

In this study, repair and maintenance schemes of the damaged composite structure was investigated, and a repair process of the carbon/epoxy laminate composite structure was investigated numerically and experimentally. The composite laminates were damaged by drop weight type impact test machine. The damaged composite structure was repaired using external patch repair method after removing damaged area. The compressive strength test and analysis results after repairing the impact damaged specimens were compared with the compressive strength test and analysis results of undamaged specimens and impact damaged specimens. Finally, the strength recovery capability by repairing were investigated.

본 연구에서는 손상된 복합재 구조의 유지 보수 방안에 대한 연구를 수행하였다. 복합재료 구조의 손상 수리 방안을 제시하고 수리 절차를 카본/에폭시 적층판 복합재 구조에 적용하여 시편 시험 및 수치 해석을 통해 분석하였다. 손상은 중량 낙하식 충격 시험기를 활용하여 복합재 구조 시편에 충격 손상으로 모사하였다. 손상된 복합재 적층판 구조는 충격 손상 부위 제거 후 외부 패치 수리 기법을 적용하여 수리하였다. 충격 손상 후 유지 보수된 시편과 손상이 없는 시편의 압축 강도를 실험적 및 해석적으로 비교 분석하였다. 이를 바탕으로 유지 보수된 시편의 강도 회복 능력을 고찰하였다.

Keywords

References

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