• 제목/요약/키워드: Welding Properties

검색결과 1,272건 처리시간 0.031초

협계용접부 강도 불균일을 고려한 소성 η계수 평가 (I) (Evaluation of the Plastic η-Factor Considering Strength Mismatch in a Narrow Gap Welding Part (I))

  • 허용;김형익;선광상;구재민;석창성
    • 대한기계학회논문집A
    • /
    • 제32권6호
    • /
    • pp.504-511
    • /
    • 2008

  • This study evaluated the influence of the strength mismatch of HAZ for a plastic ${\eta}$-factor, which is the principle parameter determining the plastic portion of J-integral to assess the fracture toughness of the weldment. The specimen of tensile and hardness test was manufactured from the piping applying narrow-gap welding, and the mechanical properties of weldment, HAZ and a base metal were obtained. To perform the finite element analysis according to the ratio of strength mismatch, the material properties was chosen with the change of strength using the determination method of Ramberg-Osgood constant. Also, the influence of the strength mismatch of HAZ was determined using finite element analysis by those properties.

  • https://doi.org/10.3795/KSME-A.2008.32.6.504 인용 PDF KSCI