Effect of Aluminum Reinforcement on the Dynamic Fragmentation of SiC Ceramics

Abstract : The threat of small to medium calibre armor piercing projectiles requires efficient protections that can be achieved by using bilayered configurations. They consist in a front face made of a hard material and a backing made of a ductile material. These solutions are among the most interesting in terms of mass efficiency. To design such bilayered concepts, one needs to understand and model fragmentation of the ceramic during the first microseconds after impact. This cracking pattern may significantly reduce the multi-hit capability of the armor. A new material made of porous silicon carbide infiltrated with aluminium is considered. The presence of an aluminum skeleton may improve the residual strength after impact. The present study deals a comparison of fragmentation properties of this new material with those of porous silicon carbide. Quasi-static experiments and edge-on-impact tests are performed. The role of aluminum is discussed. An anisotropic damage model coupled with a fragmentation study is used to analyze the experimental observations.
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Submitted on : Monday, September 20, 2004 - 5:50:18 PM
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Pascal Forquin, Lisa Tran, Pierre-François Louvigné, Laurent Rota, François Hild. Effect of Aluminum Reinforcement on the Dynamic Fragmentation of SiC Ceramics. International Journal of Impact Engineering, Elsevier, 2003, 28, pp.1061-1076. ⟨10.1016/S0734-743X(03)00034-4⟩. ⟨hal-00002909⟩

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