Abstract
It was reported recently that the most important function of a polymeric backing plate in multilayered ballistic armor system (MBAS) is capturing the post-impact debris coming from fragmented front ceramic tile. Following this discovery, conventional Kevlar™ fabric was replaced in this study with a 30vol.% ramie fabric – reinforced epoxy composite and underwent ballistic tests with 7.62mm ammunition. Multiple tests with a clay witness (simulating a personal body) revealed a 10–20% smaller depth of indentation made by penetrating projectiles in MBAS equipped with a novel ramie – epoxy composite backing plate as compared to Kevlar™ fabric. The massive capturing of ceramic fragments was observed for both the Kevlar™ fabric and ramie – epoxy composite, although the novel composite dissipated 3 times more energy during the process. Impedance-matching analysis corroborates the ballistic performance results. The 95% cost reduction indicates a substantial economic advantage of the ramie – epoxy composite over Kevlar™.
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