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Scale effects of specimens on the creep crack initiation (incubation state of creep crack growth)

Scale effects of specimens on the creep crack initiation (incubation state of creep crack growth) The definition of the incubation time of creep crack growth has been discussed from the view points of scale effects of specimens. The crack length corresponding to the stage of creep deformation was found to be sensitive to the scale effects of specimens. Therefore, crack length at the early stage of creep deformation such as transient creep is different depending on specimen size. These results were assured by in situ observational and electrical potential methods. Based on these results, it was found to be reasonable to relate the definition of the incubation time of creep crack growth to the stage of creep deformation which concerns creep damage composed of micro cracks. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Strength, Fracture and Complexity IOS Press

Scale effects of specimens on the creep crack initiation (incubation state of creep crack growth)

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Publisher
IOS Press
Copyright
Copyright © 2009 by IOS Press, Inc
ISSN
1567-2069
eISSN
1875-9262
DOI
10.3233/SFC-2009-0097
Publisher site
See Article on Publisher Site

Abstract

The definition of the incubation time of creep crack growth has been discussed from the view points of scale effects of specimens. The crack length corresponding to the stage of creep deformation was found to be sensitive to the scale effects of specimens. Therefore, crack length at the early stage of creep deformation such as transient creep is different depending on specimen size. These results were assured by in situ observational and electrical potential methods. Based on these results, it was found to be reasonable to relate the definition of the incubation time of creep crack growth to the stage of creep deformation which concerns creep damage composed of micro cracks.

Journal

Strength, Fracture and ComplexityIOS Press

Published: Jan 1, 2009

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