Abstract
The focus of this paper is to present experimental and numerical investigations on the effect of fibre orientation on ballistic resistance and energy absorption capacity of glass fibre reinforced polymer (GFRP) panels. Experiments were conducted on three different GFRP laminates made of woven fabric with cross ply, angle ply and combination of cross ply and angle ply (hybrid) with dimensions of 140 mm ×140 mm ×1 mm (thick) subjected to projectile impact with 12 mm spherical projectile using single-stage gas gun setup. In each case of cross ply, angle ply and hybrid composite laminates, six experiments with nearly same velocities (52, 55, 58, 62.5, 65 and 68 m/s) were conducted and the experiments exhibited denting and perforation. The numerical analysis was carried out using LSDYNA non-linear finite-element code considering strain rate effects based on Cowper-Symonds relation. The residual velocity, ballistic limit, energy absorption capacity and damage area of GFRP laminates obtained from numerical analysis is compared with experimental results.
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