Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Fracture toughnesses of thin sheet materials by using CT specimens

CT 시편을 이용한 박판재료의 파괴인성 특성

  • Lee, Eok-Seop (Dept.of Mechanical Engineering, Inha University) ;
  • Lee, Yun-Pyo (Dept.of Mechanical Engineering, Graduate School of Inha University) ;
  • Gang, In-Mo (Dept.of Mechanical Engineering, Graduate School of Inha University) ;
  • Kim, Seon-Yong ;
  • Kim, Seung-Gwon (Dept.of Mechanical Engineering, Graduate School of Inha University)
  • 이억섭 (인하대학교 기계공학과) ;
  • 이윤표 (인하대학교 대학원 기계공학과) ;
  • 강인모 (인하대학교 대학원 기계공학과) ;
  • 김선용 (유한전문대학) ;
  • 김승권 (인하대학교 대학원 기계공학과)
  • Published : 1997.12.01
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Abstract

The plane stress fracture toughness for thin aluminum alloy(2024-T3 and 7075-T6) specimens are characterized by using compact-tension (CT) specimens. Anti-buckling plates were fabricated on both sides of the thin CT specimens to prevent the buckling phenomena which caused by the 45.deg. C plastic yielding at the crack tip under the plane stress condition. The plane stress fracture toughnesses determined by three different procedures are compared with each others. The plane stress fracture toughnesses are also compared with a few published values which were determined by using center-cracked panel specimens.

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