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Scale effect of material structure on the similarity of subcritical crack growth under sustained loading

Scale effect of material structure on the similarity of subcritical crack growth under sustained... The irregularity of shapes of fractured units with various lengths in a creep crack path on creep crack growth resistance were characterized based on the concept of the fractal and scaling effect. Furthermore, the general validity of this characterization for subcritical crack growth was proposed by comparing the obtained results with those in rock fracture. As a result, both the fracture unit length denoted as FA of creep cracking in metals and the characteristic scale of rock fracture were found to have fractal dimensions that show both have the same scale effect. These results will promote that the possibility of a unified scientific description of the effect of geometrical morphology of various subcritical crack growth patterns will be possible on the basis of the concept of the fractal and characteristic scale effect. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Strength, Fracture and Complexity iospress

Scale effect of material structure on the similarity of subcritical crack growth under sustained loading

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Publisher
IOS Press
Copyright
Copyright © 2012 by IOS Press, Inc
ISSN
1567-2069
eISSN
1875-9262
DOI
10.3233/SFC-2012-0147
Publisher site
See Article on Publisher Site

Abstract

The irregularity of shapes of fractured units with various lengths in a creep crack path on creep crack growth resistance were characterized based on the concept of the fractal and scaling effect. Furthermore, the general validity of this characterization for subcritical crack growth was proposed by comparing the obtained results with those in rock fracture. As a result, both the fracture unit length denoted as FA of creep cracking in metals and the characteristic scale of rock fracture were found to have fractal dimensions that show both have the same scale effect. These results will promote that the possibility of a unified scientific description of the effect of geometrical morphology of various subcritical crack growth patterns will be possible on the basis of the concept of the fractal and characteristic scale effect.

Journal

Strength, Fracture and Complexityiospress

Published: Jan 1, 2012

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