Abstract
Static FOD characteristics of hybrid composites with non-woven carbon tissue (NWCT) are investigated under contact loading condition with steel ball as the indentor. The hybrid composites are made by stacking NWCT- and CFRP-prepregs. Four kinds of composites are studied; i.e. CFRP composites ([0_5/90_5/0_5] and [0_3/90_3/0_3/90_3/0_3]) and hybrid composites ([0_5//90_5//0_5] and [0_3//90_3//0_3//90_3//0_3]). The symbol " // " means that the NWCT-prepreg is located at an interface between CFRP-layers. The NWCT-prepreg has short fibers, discretely distributed with in-plane random orientation. The objective of this investigation is to study the effect of the NWCT due to indentation loads in order to fundamentally understand the impact damage mechanics of hybrid composites. The fracture surfaces of the specimens observed by deplying process and microscope, and the fracture mechanism was discussed.
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