Creep Damage Accumulation Under Multi- Stage Loading
Price
Free (open access)
Transaction
Volume
26
Pages
11
Published
2000
Size
738 kb
Paper DOI
10.2495/DM000421
Copyright
WIT Press
Author(s)
D.G. Pavlou
Abstract
In this paper the problem of cumulative creep damage is considered. A general non-linear creep damage accumulation model, suitable for variable loading and/or temperature, is presented. The proposed damage accumulation function takes into account the previous damage history as well as the loading order effect. This damage function is specified with respect to damage parameters derived by the stress versus Larson-Miller parameter curve. It is shown that some of the existing models can be obtained as a particular case of the model developed here in. Theoretical results are correlated well with experimental data for austenitic steel X-8-CrNiMoNb-16-16 at 700 °C subjected to a square block loading. 1 Introduction Failure of structural and machine components, such as those used in chemical reactors and power pla
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