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Workshop

Depinning transition in material failure, Barkhausen effect and contact line motion

  • Laurent R. Ponson (California Institute of Technology, Pasadena, USA)
G3 10 (Lecture hall)

Abstract

The motion of an elastic manifold in a random medium is involved in many physical situations. If the driving force is increased, the interplay between elasticity and disorder results in a transition from a stable manifold pinned by the defects to a propagating one, also referred to as a depinning transition.

Here, we show how the theoretical concepts associated with such a transition can be applied to describe the behavior of three different systems: the propagation of cracks in heterogeneous materials, the motion of ferromagnetic domain walls leading to the Barkhausen effect and the motion of contact lines of liquids on solid substrates.

Katja Bieling

Max Planck Institute for Mathematics in the Sciences Contact via Mail

Patrick Dondl

Max-Planck-Institut für Mathematik in den Naturwissenschaften

Stephan Luckhaus

Universität Leipzig

Max von Renesse

Technische Universität Berlin