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http://dx.doi.org/10.3795/KSME-A.2009.33.4.366

Suggestion and Evaluation of a Multi-Regression Linear Model for Creep Life Prediction of Alloy 617  

Yin, Song-Nan (한국원자력연구원)
Kim, Woo-Gon (한국원자력연구원)
Jung, Ik-Hee (부경대학교 대학원)
Kim, Yong-Wan (한국원자력연구원)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.33, no.4, 2009 , pp. 366-372 More about this Journal
Abstract
Creep life prediction has been commonly used by a time-temperature parameter (TTP) which is correlated to an applied stress and temperature, such as Larson-Miller (LM), Orr-Sherby-Dorn (OSD), Manson-Haferd (MH) and Manson-Succop (MS) parameters. A stress-temperature linear model (STLM) based on Arrhenius, Dorn and Monkman-Grant equations was newly proposed through a mathematical procedure. For this model, the logarithm time to rupture was linearly dependent on both an applied stress and temperature. The model parameters were properly determined by using a technique of maximum likelihood estimation of a statistical method, and this model was applied to the creep data of Alloy 617. From the results, it is found that the STLM results showed better agreement than the Eno’s model and the LM parameter ones. Especially, the STLM revealed a good estimation in predicting the long-term creep life of Alloy 617.
Keywords
Alloy 617; Time-Temperature Parameter(TTP); Stress-Temperature Linear Model(STLM); Time to Rupture; Standard Deviation; Very High Temperature Reactor(VHTR);
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 1
연도 인용수 순위
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