![]() used a composite material reinforced with a metallic foam embedded in a polymer matrix of epoxy resin. In order to prevent this effect, Ji et al. One of the crucial problems in the design of sandwich panels is their delamination during impact, which results in loss of material consistency. The authors noticed increased adhesiveness between aluminium and epoxy resin as well as an increase in energy absorption by IPC foam with the addition of silane. In order to increase the adhesion between the open cell aluminium preform and the polymer, some of the preforms were coated with silane. They have obtained IPC foam by infiltrating an open-celled aluminium foam with an uncured epoxy resin containing glass microspheres. investigated the energy absorption of IPC foam (interpenetrating phase composites). Another work is devoted to the main problems of dynamic loading of sandwich structures. Other ballistic resistance tests concerned polyurethane foams with aluminium cladding, in which the authors tested resistance to firing with cylindrical and conical projectiles in the 170–240 m The authors proved the ability of the tested material to absorb ballistic energy. The produced metal foams in combination with the ceramic fluid were tested under ballistic loading using 7.62 × 51 mm M80 and 7.62 × 63 mm M2 projectiles. tested metallic foams produced by powder metallurgy method based on 2 mm hollow steel balls and steel powder with 44 μm particle size, which was a matrix material. Metallic composite foams are light, porous, high-strength materials that can absorb significant amounts of energy. The topic of metallic foams as layers in composite armour, including their ballistic effectiveness, was described, among others, in the works of Garcia-Avila et al. Also, the authors of this work took up the subject of layered composites as ballistic shields. Complex solutions using metals, ceramics, and polymers have been described in several publications. Multi-layered ballistic shields are used both for personal and object protection. For personal protection, it is common to use composites reinforced with Kevlar or Twaron aramid fabrics as well as those based on ultra-high molecular weight polyethylene fibres of the Dyneema or Spectra type. In recent years, hybrid composite materials have become increasingly popular, entering the trend of seeking new solutions as ballistic barriers (shields) or kinetic energy absorbers. Performed simulation supports the detailed analysis of the impact energy dissipation for each of the samples.Ĭontinuous development of firearms has led to a search for modern solutions and materials for the personal protection of life and strategic military facilities. Metallic foams are proven to have only a remote influence on the impact load, while, when filled with polyurethane resin, they show resistance to the overshoot. The obtained results from numerical analyses are verified with experimental results. In the simulation of deformations of viscoplastic bodies, the Lagrange and Smoothed Particle Hydrodynamic (SPH) methods are applied. In order to accurately reproduce the foam structure, a computed microtomography (CT) system is used. Next, a numerical simulation in the ABAQUS environment is performed. The ballistic resistance of modern hybrid materials to direct firing of a 5.56 × 45 mm SS109 projectile and during quasi-static piercing test is examined. The main objective of this study is to test the energy absorption capacity of Zn-Al alloys filled with various polymer materials (epoxy resin, polyurethane resin and silicone). ![]() In recent years, hybrid composite materials are of increasing interest during the search for new materials to be used as ballistic barriers (shields) and kinetic energy absorbers. ![]()
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