Ultrafast imaging of granular impacts, dynamics and wave propagation phenomena

The ultrafast imaging with fields-of-view (FoVs) up to 12 x 8 mm2 now possible at ID19 enables study of phenomena propagating at up to a few 100’s-1000’s m/s. This opens exciting possibilities to study the mechanisms of impacts, wave propagation and dissipation mechanisms in (saturated) granular media and how these are affected by the granular structure, packing, confinement and the interstitial fluid. In this experiment we will use MHz radiography to study impacts into granular beds to investigate these dynamic phenomena (including wave and force propagation, compaction and dilation and viscous effects).