Self healing slip pulses along a gel/glass interface

Preprint

19 October 2001

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0110400

Abstract

We present an experimental evidence of self-healing shear cracks at a gel/glass interface. This system exhibits two dynamical regimes depending on the driving velocity : steady sliding at high velocity (> Vc = 100-125 \mu m/s), caracterized by a shear-thinning rheology, and periodic stick-slip dynamics at low velocity. In this last regime, slip occurs by propagation of pulses that restick via a ``healing instability'' occuring when the local sliding velocity reaches the macroscopic transition velocity Vc. At driving velocities close below Vc, the system exhibits complex spatio-temporal behavior.

Keywords

GEL/GLASS INTERFACE
DRIVING VELOCITY
SYSTEM EXHIBITS
HEALING SHEAR
SHEAR CRACKS
SLIP PULSES
VELOCITY
RHEOLOGY

All Related Versions

Version 1, 2001-10-19, ArXiv
Published version: Physical Review Letters, 88 (7), 075509.

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