Significance of Creep-Fatigue Interactions in Strctural Integrity Assessment

Sankara Rao, K Bhanu and Nagesha, A (2001) Significance of Creep-Fatigue Interactions in Strctural Integrity Assessment. In: Proceedings of Workshop on Recent Trends in Structural Integrity Assessment. NML, Jamshedpur, India, Jamshedpur, pp. 164-184. ISBN 81-87053-62-3



Creep-fatigue interaction is a special phenomena that have a detrimental effect on the performance of metal parts of components operating at elevated temperatures. This paper deals with the simultaneous interactions between creep and fatigue. The effect of hold time, hold position, temperature and creep ductility on creep-fatigue interaction life and damage modes of several high temperature alloys are presented in detail. The inherent deficiencies and potentially serious consequences of over-or under- design by using the classical Linear Time and Cycle-Fraction rule for predicting structural durability under high temperature creep-fatigue conditions are presented. The potential of a strain based approach in accurately predicting creep-fatigue life for ensuring structural integrity is outlined.

Item Type:Book or NML Publication
Uncontrolled Keywords:Creep-fatigue; Cycle fraction
Divisions:Material Science and Technology
ID Code:2774
Deposited By:Sahu A K
Deposited On:19 Apr 2011 21:44
Last Modified:06 Jan 2012 11:54
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