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Assessment of layered ceramic armor structure in laboratory tests against armor compact copper projectiles

: Behner, Thilo; Heine, Andreas; Wickert, Matthias

Ames, R. ; National Defense Industrial Association -NDIA-; International Ballistics Society -IBS-:
28th International Symposium on Ballistics 2014. Proceedings. Vol.2: Terminal Ballistics, Vulnerability & Survivability : Atlanta, Georgia, September 22-26, 2014
Lancaster, Pa.: DEStech Publications, 2014
ISBN: 978-1-60595-149-2
International Symposium on Ballistics <28, 2014, Atlanta/Ga.>
Fraunhofer EMI ()

A layered armor structure consisting of a buffer layer, a ceramic tile, and a supporting medium has been investigated in laboratory tests with compact copper projectiles. Buffer layer and supporting structure are made from a lightweight material. The approach followed makes use of the specific properties of ceramic materials, especially the possibility for projectile dwell, and avoids at the same time large extra weight due to confining frames, stiff backings, or buffer layers from metallic materials. As a result a setup is derived that allows stopping a model threat of 300 kg/m2 reference penetration into rolled homogeneous armor with three material layers of 94 kg/m2 weight and negligible residual penetration into a steel sheet placed at distance behind the layered target. Although the specific properties of the ceramics are not fully exploited, still total mass efficiencies above 3 are possible in laboratory tests. The implied basic mechanisms of projectile-target interaction were analyzed with the help of a high-speed camera.