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Ballistic Performance of Ceramic Targets against 25mm APDS-T Projectile

A. WEISS, A. BORENSTEIN, G. BEN-MELECH STAN, M. RAVID, N. SHAPIRA

Abstract


Tungsten based heavy alloys (WA), used as penetrators, constitute a major threat. An experimental and numerical investigation was performed to study the ballistic performance of alumina tile-based composite targets in an effort to generate data for certain high performance WA projectile. The experiments were conducted using tungsten-alloy projectiles of 25x137mmAPDS-T (M791) at a striking velocity of 1260 m/s. This heavy metal projectile has high strength and is relatively ductile. It is, therefore, difficult to apply on the projectile model structural cracking, breakage or fragmentation, even upon oblique impact that generates asymmetric forces. In order to find an effective mechanism that will defeat such projectiles, it is necessary to develop numerical models simulating the behavior of the projectile during the penetration process. The ceramic tiles used for this study were backed by 80 mm RHA steel blocks. The residual depth of penetration in the RHA block was used as a reference measure for the resistance of the ceramic targets to ballistic penetration. This study consists of three phases: the first examined the influence of confinement of the ceramic tiles on the ballistic performance. The second examined the efficacy of adding a cover plate. The third examined the effect of laminated structures on the effectiveness of ballistic ceramic tiles. In general, each of these configurations is known to be effective in enhancing the resistance of the ceramic target. For a reference to the simulations, several ceramic penetration theories which are available and published in the literature, Refs. [1]-[5], were used and discussed.


DOI
10.12783/ballistics2017/16975

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