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Simple Models for Surface Cracking

Published online by Cambridge University Press:  22 February 2011

Paul Meakin
Paul Meakin*
Affiliation:
Central Reseach and Development Department, E. I. du Pont de Nemours and Company, P. O. Box 80356, Wilmington, DE 19880-0356
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Abstract

A simple model for crack growth in thin films deposited onto a substrate has been developed. This model results in the generation of cracking patterns which have a remarkably realistic appearance. In the simulations a slow crack initiation period is followed by a period of rapid crack growth in which quite linear cracks are formed. Later on the crack growth process becomes slower and less regular as the cracking process relieves much of the stress in the surface layer. In this model pre-existing defects have a large effect on the crack growth kinetics and morphology.

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References

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