Size scaling of strength in thin film delamination

Zaiser M (2011)


Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2011

Journal

Publisher: IOP PUBLISHING LTD

Article Number: ARTN P02024

DOI: 10.1088/1742-5468/2011/02/P02024

Abstract

We investigate by means of numerical simulation the system-size dependence of the shear delamination strength of thin elastic films. The films are connected to a rigid substrate by a disordered interface containing a pre-existing crack. The size dependence of the strength of this system is found to depend crucially on the crack shape. For circular cracks, we observe a crossover between a size-independent regime at large crack radii which is controlled by propagation of the pre-existing crack, and a size-dependent regime at small radii which is dominated by nucleation of new cracks in other locations. For cracks of finite width that span the system transversely, we observe for all values of the crack length a logarithmic system-size dependence of the failure stress. The results are interpreted in terms of extreme value statistics.

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How to cite

APA:

Zaiser, M. (2011). Size scaling of strength in thin film delamination. Journal of Statistical Mechanics-Theory and Experiment. https://dx.doi.org/10.1088/1742-5468/2011/02/P02024

MLA:

Zaiser, Michael. "Size scaling of strength in thin film delamination." Journal of Statistical Mechanics-Theory and Experiment (2011).

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