29 August 2014
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Paper Information

Creep damage accumulation under multi- stage loading

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...

Pages: 11
Size: 738 kb
Paper DOI: 10.2495/DM000421

 

 

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This paper can be found in the following book

Damage and Fracture Mechanics VI

Damage and Fracture Mechanics VI

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