한국해양공학회지 (Journal of Ocean Engineering and Technology)

  • 제10권1호
  • /
  • Pages.47-52
  • /
  • 1996
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  • 1225-0767(pISSN)
  • /
  • 2287-6715(eISSN)
한국해양공학회 (Korean Society of Ocean Engineers)
권호 표지

증기 터빈축 강재의 장시간 크리프 수명 예측법 개선

Improvement of long-time creep life prediction of steam turbine rotor steel

  • 오세규 (부산수산대학교, 기계공학과) ;
  • 정순억 (경상대학교 수대 기관공학과) ;
  • 전태언 (부산수산대학교, 기계공학과)
  • 발행 : 1996.02.01
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초록

This paper deals with a study on improvement of long-time creep life prediction of steam turbine rotor steels by using initial strain method as a new approach at high temperatures of 500 to 70$0^{\circ}C$ . The main result shows that the inital strain method could be reliably utilized to predict and evaluate the long-time creep life as creep rupture strength and that the predicting equation for long-time creep life under a certain creep stress at a certain high temperature could be empirically derived out from each initial instantaneous strain measured.

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참고문헌

  1. 鐵と鋼 no.14 金屬材料技術硏究所におけるクリ-プデ-タツ-ト作成の現狀 橫井信;池田定雄;伊藤弘;馬場榮次
  2. 鐵と鋼 no.7 クリ-プ破斷强さの推定 橫井信;門馬義雄
  3. 鐵と鋼 no.3 クリ-プ破斷强度外揷法の精度と標準化 橫井信;門馬義雄
  4. NRIM Creep Data sheet no.9A Data Sheets on the Elevated-Temperature Properties of 1Cr-1Mo-025V Steel Forgings for Turbine Rotors and Shafts(ASTM A470-8) Araki;Toru
  5. Interpolation and Extrapolation of Creep Rupture Data by the Minimum Commitment Method-Part ⅠFocal-Point Convergence Mansons,S.S.;Ensign,C.R.
  6. Ph.D. Thesis, Keio University Studies on Strength Analysis of Friction Welded Joint and In-Process Monitoring of the Welding Using Acoustic Emission Techniques Oh,S.K.
  7. Proc. of Asian-Pacific Congress on Materials Strength Evaluation-86 Effect of Initial Strain on Evaluation of High Temperature Creep Properties of Friction Welded Joints Oh,S.K.
  8. Proc. ASTM v.56 Monkman,F.C.;Grant,N.J.
  9. ASME Long-Term Creep Curve Prediction Based on the Modified Θ Projection Concept Maruyama,K.;Tamaka,C.;Oikawa,H.
  10. 석사학위논문 SUS303와 SCM4의 마찰용접 및 용접부의 고온 크리이프 특성에 관한 연구 정순억