Experimental Observations on Dynamic Response of Selected Transparent Armor Materials
ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
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Structural transparent material systems are critical for many military and civilian applications. Transparent armor systems can consist of a wide variety of glass laminate assemblies with polymeric bonding interfaces and backing as well as the inclusion of polycrystalline ceramic AlON, spinel and single crystals sapphire as front facing materials. Over the last 20 years as the threats have escalated and become more varied, the challenges for rapidly developing optimized threat specific transparent armor packages have become extremely complex. Ultimate failure of structural ceramics in impact events is a function of the temporal and spatial interaction of the macrostresses at the macro-, micro- and nano-structural scale, including elastic and inelastic plastic deformation, crack nucleation, damage evolution and resulting failure from the macro-scale top down andor from the nano-scale bottom up. In order to accelerate the development of validated design and predictive performance models, a systematic series of experimental investigations have been carried out on various non-crystalline ceramics glass, single crystal sapphire and polycrystalline ceramics AlON.
- Ceramics, Refractories and Glass