Abstract
This study aims to design optimum partial reinforcement with curvilinear fibers to maximize natural frequencies of laminated composites. The test specimens are fabricated by the tailored fiber placement machine and VaRTM method, where two kinds of test specimens are prepared based on the optimum design obtained by the numerical calculation. The first one has the fiber shapes which reproduces the curvilinear partial reinforcement shape, and the other has the approximated fiber shapes by the straight segment. The numerical results indicate that the laminates with curvilinear partial reinforcements have higher natural frequencies than those without reinforcements. The experimental results successfully validate the numerical results, and it is conformed that there is an advantage for the laminate with curvilinear patricidal reinforcement over those with approximated straight reinforcement.
