擬似等方性カーボン/エポキシ積層板の落錘衝撃損傷進展

概要

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Damage growth in carbon/epoxy composite laminates was studied using an instrumented falling weight impact machine. Two kinds of quasi-isotropic (45°/0°/-45°/90°)_<2s> laminates were used in order to investigate the effects of resin toughness and fiber strength. After impact at various energy levels, the thermal deply technique was applied to investigate the three-dimensional distribution of damage such as fiber breakage and delamination. In each kind of laminate, the absorbed impact energy was found to be a linear function of both the main crack area with fiber breakage and the total delamination area. Thus, the absorbed energies per unit area due to fiber breakage, and due to delamination could be determined independently. The differences between two kinds of laminates suggested that the increase in interlaminar fracture toughness increases the energy absorbing capability due to delamination, while it decreases the capability due to fiber breakage.
一般社団法人日本機械学会の論文
1995-10-25