Carbon fiber reinforced aluminum laminates (CARALL) were fabricated by stacking CFRP laminate, adhesive film and A17075 plate. The mechanical properties of CARALL and its components were investigated as a function of size in circular holes. Theoretical approach to analyzing mechanical behaviors near the circular hole notch was carried out to compare with experimental results. The FEM analysis was also performed to investigate the stress distribution on the vicinity of circular hole notch. It was found that the adhesive bonding of A17075 prevented the abrupt strength reduction of CFRP. From the considerations of modified point stress failure criterion, the predicted result was well consistent with the experimental one. The relaxation of stress concentration in the case of CARALL can be sufficiently explained from the simulated results by the FEM analysis.
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