By L. Franks
Papers from the yank Ceramic Society's thirty first overseas convention on complex Ceramics and Composites, held in Daytona seashore, Florida, January 21-26, 2007. issues contain obvious ceramics for effect resistance, safety opposed to mine blast and fragments, demanding situations dealing with ceramic armor brands, novel fabric innovations and improvement of legitimate armor layout and characterization instruments to foretell functionality for air and floor cars in addition to the person soldier.
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Additional info for Advances in Ceramic Armor III: Ceramic Engineering and Science Proceedings
5 shows a close correlation of these two parameters covering all oxide and nonoxide armor ceramics with most different grain sizes. densities. and Young's moduli (only U'Cbased hard metals with a metallic binder phase are clearly outside of this correlation, the inclusion of g l m . ~into a general correlation depends on the assumption of a linear relationship). With this general correspondence of HEL and hardness it appears justified to discuss major influences on the ballistic strength on the basis of the more easily measured static niacrohardness.
I’D. Dandekar, ”Shock Response of Boron Carbide,” ARL-TR-2456. Army Research Laboratory, Aberdeen Proving Ground, Aberdeen; MD, (200 1). I%. Subhash, “Dynamic Indentation Testing,” ASM Hand Book, 8, 5 19 - 529 (2000). ”P. H. Geubelle and J. S. Baylor, “Impact-induced delamination of composites: a 2D simulation,” Composites Part B 29B. 589-602 (1 998). “S. Maiti, P. H. Geubelle, “A cohesive model for fatigue failure of polymers,“ Engij7eering Frucrure Mechanics 72 691-708 (2005). Advances in Ceramic Armor I l l 43 Static and Dynamic Indentation Response of Fine Grained Boron Carbide I0 T.
Microstructural analysis was later performed on the specimens to identify the influence of strain rate on indentation induced crack patterns. A 2-'D plane strain numerical framework based a novel generalized cohesive element method in conjunction with the conventional cohesive volumetric finite element (CVFE) m0de1"~'~has been developed to simulate the observed fracture behavior and gain further insight. 2. EXPERIMENTAL Boron carbide powder with 800 nm particles was used as the starting material, see Fig.
Advances in Ceramic Armor III: Ceramic Engineering and Science Proceedings by L. Franks