Abstarct: In this thesis, a combined numerical and experimental analysis of high velocity impact and penetration into the ceramic/composite targets has been performed. The target is composed by an alumina plate and a fiberglass/epoxy composite made by hand lay-up process in four different thicknesses. In experiments, high velocity impact tests were performed by the gas gun and conical steel projectiles and the residual velocity, erosion and weight of the projectiles after impact, penetration mechanism, ceramic failure, the deformation and rapturing of composite laxyer and the ballistic limit velocity were studied and analyzed. In the numerical part of this thesis, baxsed on the experimental results for velocities, the penetration process was modeled by the Ls-dyna finite element software and the quantities of residual velocity of the projectile, ballistic limit velocity and specific ballistic energy were calculated. Then the residual velocity in terms of impact velocity was presented for different thicknesses, as well the ballistic limit velocity curve was determined versus the ceramic and composite laxyer thicknesses. After verifying the numerical model with the experimental results and achiving a valid model in simulation, the penetration process was modeled for two common projectiles namely AK-47 (7.62 mm Caliber) and Beretta (9 mm Caliber). The results showed that near the ballistic limit, the reduction rate of exit velocity in comparison with impact velocity is higher and in higher velocities than the ballistic limit, by increasing the impact velocity the variation rate reduced. Also, in lower thicknesses of ceramic laxyers for Beretta projectile, increasing the thickness of composite has no effect on the ballistic limit velocity. Moreover, in lower ceramic thicknesses, increasing the composite thickness in higher velocities has very little effect on the variation of projectile velocity but with decreasing the projectile velocity in the vicinity of the ballistic limit, these changes will increase.