Study on the penetration protection of a fiber-reinforced composite structure with CNTs/GFP clip STF/3DKevlar

Study on the penetration protection of a fiber-reinforced composite structure with CNTs/GFP clip STF/3DKevlar

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A fiber-reinforced composite structure with carbon nanotubes-reinforced glass fiber panel (CNTs/GFP) clip and three-dimensional Kevlar fabric impregnated with shear thickening fluid (STF/3DKevlar) is proposed (CNTs/GFP-STF/3DKevlar).On this basis, the preparation, mechanical properties, and energy dissipation characteristics of CNTs/GFP, STF/3DKevlar, and their composite structures were studied.An experimental loading and testing system for a fragment penetration composite structure composed of a rainier fabrics first-stage light gas gun, a high-speed camera, a dynamic strain gauge, and a PVDF piezoelectric sensor is constructed.

According to the deformation process, the morphology of the target plate, and the results of industrial CT, it is concluded that the fabric structure and nanoparticle concentration play an active role in the mechanical and protective properties of the composite structure.Compared with the pure GFP-Kevlar composite structure, the energy dissipation of the reinforced composite structure is enhanced by the addition of CNTs, STF, and the 3D braided KEVLAR fabric, and the lowest kinetic energy consumption of bullets can be increased by 21.92% domeless quartz nails and the highest by 48.

23%.