Previous work on the drop weight impact behaviour of polymer composite sandwich beams subject to three point bending has been concerned with beams with polymeric cores (Divinycell H100, H200) and pre-preg UD glass epoxy skins (SP Systems SE84) laid up in a cross ply form [
]. In the work, a mass of 1.49 kg was dropped from a height of 2 metres giving an impact velocity of 5.9 m/s and an impact energy of 26 J. The beam span was 200mm and the core depth was 10mm. The impact energy was enough to cause failure of the upper skin, and some progressive collapse of the core. The failure of the upper skin was due to in-plane compression.