Abstract
This study discusses about the influence of the velocity of small projectile and the structure of lamination on the fracture of out-of-plane impact plate laminated with CFRP and ceramics layer. A small projectile was launched from the test device at 300 and 860 m/s of the velocity condition at low and high-speed tests, respectively. Impact release of compressed He gas and explosion of gunpowder were applied to the low and high-speed test machine, respectively. CFRP plates were fabricated with [0/90]43s or [0/90]32s prepreg with epoxy matrix, while some types of SiC plates were sandwiched between the CFRP plates. The difference of absorbed energies of the ceramic parts during the impact of high velocity condition was calculated by the proposed model in a reference, when the thickness of the ceramic layer was changed The test results, at first, showed that improved shooting machine was necessary to investigate the fracture behavior of the specimen under high-velocity conditions, because fracture behavior of CFRP plate depended on the condition of impact velocity of the small projectile. It was effective to sandwich the thick ceramic layer between CFRP layers in the laminate to increase the absorb energy of the ceramic part during impact.
