Polypropylene foam behaviour under dynamic loadings: Strain rate, density and microstructure effects

Elasto-plastic stress and strain behaviour at notch roots under monotonic and cyclic loadings

Notch deformation behaviour under monotonic and cyclic loading conditions was investigated using circumferentially notched round bar and double-notched flat plate geometries, each with two different notch concentration factors. Notch strains for the double-notched plate geometry were measured with the use of miniature strain gauges bonded to specimens made of a vanadium-based microalloyed steel...

Microtomography on polypropylene foam under dynamic loading: 3D analysis of bead morphology evolution

A dynamic crash loading experiment is performed on a polypropylene foam used in composite sandwich structures for safety applications. Several interrupted shocks are conducted, in between which microtomographic acquisitions are made, showing the evolution of the sample during its compression. This data can help construct and validate predictive models, although, because this material is multisc...

Colloidal gels under shear: Strain rate effects

Attractive colloidal particles are trapped in metastable states such as colloidal gels at high attraction strengths and attractive glasses and high volume fractions. Under shear such states flow via a two step yielding process that relates to bond and cluster or cage breaking. We discuss the way the structural properties and related stress response are affected by the shear rate. At low rates c...

Dynamic Behaviour of Piers Under Waves and Earthquakes

Dynamic Behaviour of Piers Under Waves and Earthquakes