By Jerry C. LaSalvia, Soshu Kirihara, Sujanto Widjaja
Ceramic Engineering and technological know-how complaints quantity 34, factor five - Advances in Ceramic Armor IX
A selection of 14 papers from the yankee Ceramic Society’s thirty seventh foreign convention on complicated Ceramics and Composites, held in Daytona seashore, Florida, January 27-February 1, 2013.This factor contains papers provided within the Armor Ceramics Symposium on themes corresponding to production; High-Rate Real-Time Characterization; Microstructural layout; Nondestructive Characterization; and Phenomenology and Mechanics of Ceramics Subjected to Ballistic Impact.
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Extra resources for Advances in Ceramic Armor IX: Ceramic Engineering and Science Proceedings, Volume 34 Issue 5
Doherty^ M Cubed Technologies, Inc. S. Army Research Laboratory Materials & Manufacturing Science Division RDRL-WMM-F APG, Maryland 21005-5069 ABSTRACT Due to their favorable properties, such as high hardness, high stiffness, low density, and multiphase toughening, reactively bonded silicon carbide and boron carbide composites have been used broadly in the armor segment of the ceramic market. The process itself is also favorable when compared with hot-pressing and sintering in that shape complexity is easier to produce.
Static and dynamic mechanical properties of the alumina are shown below in table 1. 2 The tiles were square and had nominal area of 100x100 sq. mm, with thickness in the range of 5, 6, or 7 mm. The back face of the tile was machined to a flatness to ensure complete contact with front face of the aluminum backing block, thus reducing the possibility of tensile failure and minimizing the possibility of stress wave reflections. Table I. Mechanical properties of alumina test tiles. 6 GPa Tensile (spall) strength, osp 32 • Advances in Ceramic Armor IX Effect of Prestressing on the Ballistic Performance of Alumina Ceramics In addition, the edges of tiles were machined to flatness and perpendicularity with adjoining edges to ensure a precise fit in the confinement device and prevent bending/shearing stresses during application of prestress.
Soc. 79, 579-84 (1996). 7 D. Sherman, Quasi-Static and Dynamic Ballistic Damage Mechanisms in Confined Ceramic Tiles, J. Phys IV France 7, 1021 -26 ( 1997). *STANAG 4569: Protection Levels for Occupants of Armoured Vehicles, Edition 2 (NATO Standardization Organisation, Brussels, 2011. 9 D. Sherman, Impact Failure Mechanisms in Alumina Tiles on Finite Thickness Support and the Effect of Confinement, Int. J. Impact Engng 24, 313-28 (2000). 10 W. H. Johnson, G. R. Cook, A Constitutive Model and Data for Metals Subjected to Large Strains, High Strain Rates, and High Temperatures, Proceedings of the 7th International Symposium on Ballistics , The Hague, 1983.
Advances in Ceramic Armor IX: Ceramic Engineering and Science Proceedings, Volume 34 Issue 5 by Jerry C. LaSalvia, Soshu Kirihara, Sujanto Widjaja