고온.고습하에서 직교이방성 CFRP 복합적층판이 잔류피로 굽힘강도에 미치는 영향에 관한 연구

A Study on Effects to Residual Fatigue Bending Strength or Orthotropy CFRP Composite Laminates under High Temperature and Moisture

  • 임광희 (회원, 우석대학교 반도체전기자동차공학부) ;
  • 양인영 (회원, 조선대학교 기계공학부)
  • 발행 : 2000.11.01

초록

It is thought that impact damages and hygrothermals can affect to CFRP (Carbon-fiber reinforced plastic) composite laminated due to the sensitivity on the composite laminated Therefore, this paper focuses on the fracture mechanisms experimentally based on a scanning acoustic microscope (SAM) when subjected to impact damages, i.e., foreign object damages(FOD), and also the influence of impact damages and hygrothermals on residual fatigue bending strength of CFRP laminates. Composite laminates used in the experiment are CF/EPOXY orthotropy laminated plates, which constist of two-interfaces [04/904]s. A steel ball launched by an air gun collides against CFRP laminates to generate impact damages. Bending fatigue tests are periodically interrupted for a nondestructive evaluation (NDE) measurement of the progrossive damages to built the fracture mechanism by impact damages, and three-point fatigue bending tests are carried out to investigate the influence of hygrothermals on the effect on the residual bending fatigue strength of CFRP laminates.

키워드

참고문헌

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