Impact Behaviour of Sandwich GFRP-Foam-GFRP Composites

Abstract

The object ive of this study is to investigate the impact behaviors of sandwich structures. These sandwich structures are made of cross -plied E-g lass fibre reinforced plastic (GFRP) co mposite faces with polyurethane foam core. GFRP co mposites are used to combine the upper face and the lower face through the core in stitched sandwich structures. Three impact conditions are considered, such as the Izod impact, Charpy impact and weight drop impact. The results show that weight drop impact energy is h igher than the Izod and Charpy impact energy, where as dynamic fracture toughness of charpy impact energy is more than the izod and weight drop impact energy due to geometry of impactor and specimen.