Evaluation of the Residual Strength of CFRP Composite Pressure Vessel After Low Velocity Impact

CFRP 복합재압력용기의 충격후 잔류강도저하특성 평가

  • 박재범 (국방과학연구소 제1기술연구본부 6부) ;
  • 김동륜 (국방과학연구소 제1기술연구본부 6부) ;
  • 황태경 (국방과학연구소 제1기술연구본부 6부)
  • Published : 2009.11.19

Abstract

In this study, the residual strength of CFRP filament winding pressure vessel after low velocity impact was evaluated quantitatively. After impact test, the pressure vessel was sectioned to produce 25 mm-wide ring specimen and the bursting pressure of this specimen was measured. A finite element model was also fabricated to investigate the deformation and stress distribution characteristics of the impacted CFRP vessel. The degradation of the residual strength along with the increase of impact energy was successfully measured and reviewed.