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Crack propagation in solids and crack-surface roughness

Chakrabarti, Buddhapriya and Chakrabarti, Bikas K (1999) Crack propagation in solids and crack-surface roughness. In: Physica A, 270 (1-2). pp. 21-26.

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It is seen from extensive computer simulation results and some experimental observations that for inhomogenous solids with moving cracks, the surface roughness exponent $\xi$ crosses over from a low value $\xi \sim 0.42$ to a higher value $\xi \sim 0.8$, as the crack-tip velocity increases above a certain threshold. In this paper we extend a simple phenomenological model and a scaling analysis for the growth of crack surfaces in inhomogenous solids by introducing explicitly the effects of the stress rate. We find that the stress rate is indeed a relevant parameter and its consideration leads to a qualitative understanding of the phenomena described above.

Item Type: Journal Article
Publication: Physica A
Publisher: Elsevier
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: Crack propagation;Strain rate;Roughness;Heterogenous media
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 25 May 2007
Last Modified: 19 Sep 2010 04:36
URI: http://eprints.iisc.ac.in/id/eprint/10222

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