124 円孔を有するCFRP/チタン薄膜ハイブリッド積層板の損傷進展挙動

抄録

Tensile tests are conducted on open-hole specimens of these laminates that consist of CFRP and thin titanium films. The effects of three different patterns with various stacking sequence on mechanical behavior are evaluated by tensile tests. The hybrid laminates in which inner 0° layers are sandwiched by the titanium films have the highest tensile strength. From observations of just before fracture, the initiation and growth of cracks are found to be suppressed in the hybrid laminates where inner 0° plies are sandwiched by the titanium films compared to the other two hybrid specimens that have different stacking sequence. It has been found that the titanium layers that are inserted inner side of the laminate receive the tensile load as bridging effect then results in the suppressed crack initiation.