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RESEARCH PAPERS

The Effect of Multiaxiality and Follow-Up on Creep Damage

[+] Author and Article Information
R. Seshadri

Industrial Systems Engineering, University of Regina, Regina, Saskatchewan, Canada

J. Pressure Vessel Technol 112(4), 378-385 (Nov 01, 1990) (8 pages) doi:10.1115/1.2929892 History: Received September 26, 1989; Revised August 15, 1990; Online June 17, 2008

Abstract

A simple approximate method for estimating creep damage in pressure components experiencing multiaxial relaxation and follow-up is presented. The theoretical formulation essentially relates the relaxation process that accounts for multiaxiality and follow-up to the uniaxial relaxation model. The effect of follow-up is determined by studying the relaxation response on the Generalized Local Stress Strain (GLOSS) diagram. A procedure for partitioning creep damage into load and deformation-controlled fractions is also discussed. GLOSS analysis is applied to several component configurations that exhibit follow-up potential.

Copyright © 1990 by The American Society of Mechanical Engineers
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