Recent progress in micromechanics-based approaches to ductile fracture

Lecture by Professor T. Pardoen of the Université catholique de Louvain, Belgium, discussing progress on the characterisation and modelling of void nucleation, and new non-local version of an extended Gurson model with shear and tensile coalescence yield surfaces.
There are many interesting observations, including the fact that void nucleation on particles becomes more difficult at small particle sizes. The initial porosity has a large effect on the final fracture strain.

[@luisfredericopdick3866]

initial voids in the Al AA6xxx could be produced by polishing (artifact)?

[@bhadeshia123]

I suppose the sample can be electropolished in the event of a doubt.

[@luisfredericopdick3866]

@@bhadeshia123 On AA2024 m precipitates more easily fracture and detach during polishing. By Supermartensitic steels, to observe pitting nucleation on TiN inclusions after cold work, we have polished by sputtering.