Oscillations in Rapid Fracture
Materials Science
2015-06-25 v1
Abstract
Experiments of pure tensile fracture in brittle gels reveal a new dynamic oscillatory instability whose onset occurs at a critical velocity, Vc = 0.87 Cs, where Cs is the shear wave speed. Until Vc crack dynamics are well described by linear elastic fracture mechanics (LEFM). These extreme speeds are obtained by suppression of the micro-branching instability, which occurs when sample thicknesses are made comparable to the minimum micro-branch width. The wavelength of these sinusoidal oscillations is independent of the sample dimensions, thereby suggesting that a new intrinsic scale exists that is unrelated to LEFM.
Cite
@article{arxiv.cond-mat/0609273,
title = {Oscillations in Rapid Fracture},
author = {Ariel Livne and Oded Ben-David and Jay Fineberg},
journal= {arXiv preprint arXiv:cond-mat/0609273},
year = {2015}
}
Comments
4 pages, 5 figures