Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Strength Evaluation of CFRP Hat-shaped Sectional Members Due to Variation of Collapse Conditions Under Hygrothermal Environment

고온.고습 환경하에서의 압궤조건 변화에 따른 CFRP 모자형 단면부재의 강도평가

  • 양용준 (동강대학교 소방안전관리과) ;
  • 양인영 (조선대학교 기계설계공학과) ;
  • 심재기 (조선대학교 메카트로닉스공학과)
  • Received : 2011.08.03
  • Accepted : 2011.09.26
  • Published : 2012.02.15
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Abstract

CFRP composite material has the superior specific strength and rigidity compared to metallic materials, and is widely adopted in the various fields. However, CFRP composite material has the weakness in hygrothermal and crash environment. Especially, moisture ingress into composite material under hygrothermal environment can change molecule arrangement and chemical properties. In addition, interface characteristics and material component properties can be degraded. A collapse experiment has been made to research the differences of absorbed energy and deformation mode between absorbed specimens of moisture and non-moisture. As a result of this study, the effect of moisture absorption and impact loads of about 30~50% reduction in strength are shown.

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References

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