Dynamic instabilities in crack propagation and solid frictions

Objective

Crack propagation and stick-slip dynamics arising from solid friction w be experimentally studied from the point of view of nonlinear science. Two setups are now available: a system for measuring several physical magnitudes in the cracking of brittle materials, and a device for monitoring velocity and torque of two surfaces rubbing against each other.
Dynamical properties of cracks (such as propagation velocity, surface profiles and sound emission) will be studied in order to find correlations among them, and their influence in the development of the instability. Experiments on solid friction should help to explain complex statistics of the system, such as the amplitude distribution of events, in terms of simple dynamics.
In both cases, direct comparison with existing theoretical results will be possible. It has been suggested that crack propagation is a case of directed percolation, and predictions from numerical models of stick-slip dynamics are already available.

Programme(s)

• FP4-TMR - Specific research and technological development programme in the field of the training and mobility of researchers, 1994-1998

Topic(s)

• 0302 - Post-doctoral research training grants
• TP09 - Condensed Matter - Mechanical and Thermal Properties

Call for proposal

Data not available

Funding Scheme

RGI - Research grants (individual fellowships)

Coordinator

ECOLE NORMALE SUPERIEURE DE LYON

Address

Allée D'italie 46 Ura 1325 Cnrs
69364 Lyon
France

Participants (1)

Not available

Spain