Evaluation of Fracture Toughness of Al alloys for Propulsive Engine using Strain Measurement

변형률 측정을 이용한 추진기관용 Al 합금의 파괴인성 평가

  • 김재훈 (충남대학교 기계설계공학과) ;
  • 김덕회 (충남대학교 기계설계공학과) ;
  • 임동규 (충남대학교 기계설계공학과) ;
  • 박성욱 (충남대학교 기계설계공학과) ;
  • 문순일 (국방과학연구소)
  • Published : 2002.09.01

Abstract

The tincture toughness is evaluated by using U(compact tension) and 3PB(three point bending) specimens of AI alloys far propulsive engine. To evaluate the static fracture toughness, strain gage method is used. The static fracture toughness obtained from the strain measurement is compared with the results by ASTM standard and FEM analysis. For the reliable evaluation of fracture toughness, strain gages are attached at various positions.

Keywords

fracture toughness;strain measurement;stress intensity factor;gage position

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