Crack phantoms: localized damage correlations and failure in network models of disordered materials

Zaiser M, Lennartz-Sassinek S, Moretti P (2015)


Publication Language: English

Publication Status: Published

Publication Type: Journal article

Publication year: 2015

Journal

Publisher: Institute of Physics: Hybrid Open Access

DOI: 10.1088/1742-5468/2015/08/P08029

Abstract

We study the initiation of failure in network models of disordered materials such as random fuse and spring models, which serve as idealized representations of fracture processes in quasi-two-dimensional, disordered material systems. We consider two different geometries, namely rupture of thin sheets and delamination of thin films, and demonstrate that irrespective of geometry and implementation of the disorder (random failure thresholds versus dilution disorder) failure initiation is associated with the emergence of typical localized correlation structures in the damage patterns. These structures ('crack phantoms') exhibit well-defined characteristic lengths, which relate to the failure stress by scaling relations that are typical for critical crack nuclei in disorder-free materials. We discuss our findings in view of the fundamental nature of failure processes in materials with random microstructural heterogeneity.

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How to cite

APA:

Zaiser, M., Lennartz-Sassinek, S., & Moretti, P. (2015). Crack phantoms: localized damage correlations and failure in network models of disordered materials. Journal of Statistical Mechanics-Theory and Experiment. https://doi.org/10.1088/1742-5468/2015/08/P08029

MLA:

Zaiser, Michael, Sabine Lennartz-Sassinek, and Paolo Moretti. "Crack phantoms: localized damage correlations and failure in network models of disordered materials." Journal of Statistical Mechanics-Theory and Experiment (2015).

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