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|
|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|
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