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Extrapolation of Shorter Time Creep Rupture Data Using the Damage Mechanics Approach of Penny

[+] Author Affiliations
Heloisa C. Furtado


Iain Le May, Robert Peace

Metallurgical Consulting Services

Luiz Henrique de Almeida


Paper No. PVP2004-2253, pp. 11-17; 7 pages
  • ASME/JSME 2004 Pressure Vessels and Piping Conference
  • Elevated Temperature Design and Analysis, Nonlinear Analysis, and Plastic Components
  • San Diego, California, USA, July 25–29, 2004
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4667-9
  • Copyright © 2004 by ASME


Recently Penny has extended the use of the continuum damage mechanics approach of Kachanov and Rabotnov to the extrapolation of shorter time creep rupture data to longer times. In this paper the authors review the methodology developed by Penny and have applied it using creep data for 9Cr-1Mo and 2.25Cr-1Mo steels that they have tested, as well as using data from the literature. The method appears to provide a reliable method of extrapolation from isothermal data, and can provide an economical and physically justified approach to the development of longer time creep-rupture data.

Copyright © 2004 by ASME
Topics: Creep , Rupture



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