Crack Initiation in Viscoelastic Materials

Yuval Mulla; Giorgio Oliveri; Johannes T. B. Overvelde; Gijsje H. Koenderink

doi:10.1103/PhysRevLett.120.268002

Crack Initiation in Viscoelastic Materials

Yuval Mulla, Giorgio Oliveri, Johannes T. B. Overvelde, Gijsje H. Koenderink

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

In viscoelastic materials, individually short-lived bonds collectively result in a mechanical resistance which is long lived but finite as, ultimately, cracks appear. Here, we provide a microscopic mechanism by which a critical crack length emerges from the nonlinear local bond dynamics. Because of this emerging length scale, macroscopic viscoelastic materials fracture in a fundamentally different manner from microscopically small systems considered in previous models. We provide and numerically verify analytical equations for the dependence of the critical crack length on the bond kinetics and applied stress.

Original language	English
Article number	268002
Journal	Physical review letters
Volume	120
Issue number	26
DOIs	https://doi.org/10.1103/PhysRevLett.120.268002
Publication status	Published - 29 Jun 2018
Externally published	Yes

Funding

We thank Pieter Rein ten Wolde, Chase Broedersz, David Brueckner, and Mareike Berger for fruitful discussions. This work is part of the research program of the Netherlands Organisation for Scientific Research (NWO). We gratefully acknowledge financial support from an ERC Starting Grant (No. 335672-MINICELL).

Funders	Funder number
Seventh Framework Programme	335672

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Crack Initiation in Viscoelastic Materials

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