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RESEARCH PAPERS: Other Technical Papers

Computerized Time-Temperature Parametric Analysis of C, Mo, and Cr-Mo Steel Stress-Rupture Data

[+] Author and Article Information
P. K. Raut, W. R. Clough

School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Ga.

J. Eng. Ind 95(1), 191-197 (Feb 01, 1973) (7 pages) doi:10.1115/1.3438098 History: Received June 12, 1972; Online July 15, 2010

Abstract

Demonstrated by results obtained with highly modified or original computer programs, accomplished with 31 data sets for C, Mo, and Cr-Mo steels, is the general superiority of the new Goldhoff-Sherby and the older Manson-Haferd parameters for the correlation of stress-rupture data, as compared with the use of the Larson-Miller, Sherby-Dorn, Manson-Succop, Conrad, and Korchynsky methods. Abilities to correlate are based on values of statistical measures of scatter about master curves. Rupture-times in excess of 10,000 hr were used in separate computer runs to test the abilities of the seven parameters to extrapolate to longer times. For extrapolation the Goldhoff-Sherby and Manson-Haferd parameters are generally superior, but particular attention must be paid to the order of the polynomial used to approximate master curves.

Copyright © 1973 by ASME
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