Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on Small Punch-Creep Test Using Finite Element Analysis II

유한요소해석을 이용한 소형펀치-크리프 시험에 관한 연구 (II) - SP-Creep 시험과 일축 크리프 시험의 상관성을 중심으로 -

  • 이송인 (전북대학교 기계공학부) ;
  • 권일현 (전북대학교 기계공학부, 자동차신기술연구소) ;
  • 김연직 (전북대학교 기계공학부, 자동차신기술연구소) ;
  • 안병국 (전북대학교 신소재공학부) ;
  • 안행근 (전북대학교 신소재공학부) ;
  • 백승세 (전북대학교 대학원 정밀기계공학과) ;
  • 유효선 (전북대학교 기계공학부, 자동차신기술연구소)
  • Published : 2001.11.01
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Abstract

Small punch-creep(SP-Creep) test technique has been applied for evaluating the creep characteristics for high temperature materials. However, in order to evaluate the damage and predict the remaining life, it is necessary to establish a quantitative correlation between SP-Creep and uniaxial-creep test results. This paper presents analytical and experimental results of useful correlation between SP-Creep and uniaxial-creep properties for 9Cr1MoVNb steel at $600{\sim}650^{\circ}C$ in terms of stress(load) and activation energy during creep deformation. Especially, the activation energy obtained from SP-Creep test is linearly related to that from uniaxial-creep test at $650^{\circ}C$ as follows: $Q_{sp-p}{\fallingdotseq}1.37\;Q_{TEN},\;Q_{sp-{\sigma}}{\fallingdotseq}1.53\;Q_{TEN}$.

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