This article deals with the issue of the ballistic resistance of composite panels, which were made of paraaramid fiber. For the shooting tests was used Twaron CT 747 with epoxy matrix LG 700. This material is used for soft and hard ballistic protection. The composite panels were impacted by the missile 5.56 x 45 mm NATO FMJ M139 and by the missile 5.56 x 45 mm NATO FMJ SS109. To provide the required ballistic resistance in accordance with the US STANDARD NIJ 0101.06, the composite panels were impacted by the missile 7.62 x 51 mm NATO FMJ M80. The ballistic resistance of composite panels was verified through shooting tests in the experimental ballistics laboratory. Based on the ballistic tests, we monitored the extent of the damage, the spread of cracks and delamination of layers, which allowed the evaluation of the damage of these panels. The result of the shooting tests was the determination of limit thicknesses, in which the panels will not be penetrated. These results provide essential aspects for the development of new composite armor.
In this study, the ballistic resistance of composite panels made of solid fabrics was investigated. In the experimental part, the materials Twaron CT 747 TH110 impregnated with thermoplastic resin and Twaron CT 747 impregnated with thermoset resin were examined. The ballistic resistance of the composite panels was tested in the reduced version according to the NATO AEP-55 STANAG 4569 standard, protection level 1. The manufactured composite panels were tested by the rifle cartridges 7.62 x 51 mm FMJ M80. The high-speed camera was used to observe the impact of the missiles into the panel. As part of the evaluation of the experiment, the damage ranges of these panels were identified. The composite panel made of Twaron CT 747 TH110 impregnated with thermoplastic resin absorbed more energy of the impacting missiles than the panel made of Twaron CT 747 impregnated with thermoset resin. The results show that the panel made of Twaron CT 747 TH110 impregnated with thermoplastic resin, which was composed of 90 layers was not penetrated by the missile 7.62 mm M80 and complies with NATO AEP-55 STANAG 4569, protection level 1.
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