Dynamic delamination in a glass fiber composite and interfacial fracture in a bi-material

Dynamic delamination experiments were performed on the specimens made of unidirectional glass fiber composites in Mode I and Mode II. Crack propagation history was analyzed using a high speed camera synchronized with electrical circuit device. The results showed that the dynamic fracture toughness was increased with increasing loading rate in Mode I and Mode II fracture experiments. The loading rate and surface topography effects on energy dissipation during dynamic fracture of an aluminum/epoxy interface were also experimentally investigated. The results indicated that surface morphology significantly affect the energy dissipation during the dynamic fracture of the interface.