Speaker
Mikko Alava
(Helsinki University of Technology)
Description
The irreversible yielding in materials has usually been
described in the terms of rheology, but recent advances in
from glasses to plasticity mediated by topological defects
are starting to show this century-old picture to be wrong.
In this talk I will discuss three issues: what happens during
the deformation of crystalline solids, which is related to
collective dislocation dynamics, how such phenomena are
indeed more universal and easy to see during creep deformation,
and thirdly some ongoing work on the internal dynamics of
complex suspension flows. These are often thixotropic, and
exhibit aging.
