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Creep damage calculation along a semi-elliptical crack in a power plant component

Creep damage calculation along a semi-elliptical crack in a power plant component A 3D finite element model, based on the combination of a creep model and a ductility exhaustion approach, is presented and validated on the basis of creep crack growth tests. The proposed model is used to characterize creep crack growth in a pressurized cylinder with an axial crack on the inside surface. A canoe shaped distribution of stress triaxiality, that directly affects the creep damage, is found and investigated. The damage evolution is observed at different crack tip locations, showing a dependence on the crack geometry and loading conditions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Strength, Fracture and Complexity IOS Press

Creep damage calculation along a semi-elliptical crack in a power plant component

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Publisher
IOS Press
Copyright
Copyright © 2018 IOS Press and the authors. All rights reserved
ISSN
1567-2069
eISSN
1875-9262
DOI
10.3233/SFC-180225
Publisher site
See Article on Publisher Site

Abstract

A 3D finite element model, based on the combination of a creep model and a ductility exhaustion approach, is presented and validated on the basis of creep crack growth tests. The proposed model is used to characterize creep crack growth in a pressurized cylinder with an axial crack on the inside surface. A canoe shaped distribution of stress triaxiality, that directly affects the creep damage, is found and investigated. The damage evolution is observed at different crack tip locations, showing a dependence on the crack geometry and loading conditions.

Journal

Strength, Fracture and ComplexityIOS Press

Published: Jan 1, 2018

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