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Damage and Crack Propagation at a Microstructural Scale

Published online by Cambridge University Press:  15 February 2011

Elisabeth Bouchaud ,
Florin Paun  and
Elodie Ducourthial
Elisabeth Bouchaud
Affiliation:
DSM/DRECAM/SRSIM, CEA-SACLAY, 91191 GIF-SUR-YVETTE Cedex, France
Florin Paun
Affiliation:
ONERA (DMMP), 29, Av. de la Division Leclerc, 92322 CHATILLON Cedex, France
Elodie Ducourthial
Affiliation:
ONERA (DMSE), 29, Av. de la Division Leclerc, 92322 CHATILLON Cedex, France
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Abstract

A quantitative analysis of the morphology of damage cavities in metallic materials is performed. At larger length scales, the self-affine correlation length of fracture surfaces is shown to be correlated to the grain size. These observations suggest a new scenario for the origin of scaling laws observed on fracture surfaces. It is argued that they reflect strong correlations in damage created prior to fracture during crack propagation.

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References

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