Crack propagation in solids and crack-surface roughness

Chakrabarti, Buddhapriya ; Chakrabarti, Bikas K. (1999) Crack propagation in solids and crack-surface roughness Physica A: Statistical Mechanics and its Applications, 270 (1-2). pp. 21-26. ISSN 0378-4371

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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 ζ crosses over from a low value ζ0.42 to a higher value ζ0.8, 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:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Crack Propagation; Strain Rate; Roughness; Heterogenous Media
ID Code:44826
Deposited On:23 Jun 2011 07:49
Last Modified:23 Jun 2011 07:49

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