By Jerry C. LaSalvia, Soshu Kirihara, Sujanto Widjaja
Ceramic Engineering and technology court cases quantity 34, factor five - Advances in Ceramic Armor IX
A number of 14 papers from the yank Ceramic Society’s thirty seventh overseas convention on complex Ceramics and Composites, held in Daytona seashore, Florida, January 27-February 1, 2013.This factor contains papers provided within the Armor Ceramics Symposium on issues akin 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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Additional resources for Advances in Ceramic Armor IX: Ceramic Engineering and Science Proceedings, Volume 34 Issue 5
In fact, the ceramic in the perforated tiles is largely intact on the strike face with a localized damage zone and some minor cracks around the edges of the tiles. A close-up of the impact zone is provided in Figure 6. The solid tile shows a somewhat regular pattern of radial and ring cracking. The wide and medium spaced ceramics each show a random pattern of fissures, and the close spaced perforations limit the crack propagation on the surface significantly. It is clear from the figures that the perforations reduce cracking.
A. Wolffe, "A New Family of Reaction Bonded Ceramics for Armor Applications", Ceramic Armor Materials by Design, Ceramic Transactions, 134, J. W. McCauley et al. editors, (2002) 527-40. 12. M. K. Aghajanian, B. E. Schultz, K. Kremer, T. R. Holmes, F. S. Lyons, and J. Mears, "Tactical vehicle armor systems that utilize large, complex-shaped reaction bonded ceramic tiles," Ceramic Engineering and Science Proceedings, 26  (2005) 263-70. 13. P. G. Karandikar, S. Wong, G. Evans, and M. K. Aghajanian, "Optimization of reaction bonded B4C for personnel armor applications," Proceedings of Personal Armor Systems Symposium (PASS), (2010).
After 5 us the propagation of the black area slowed down. 5 us after impact and propagated at an average velocity of 12406 ±127 m/s. The last photograph in Figure 9 also shows spall fracture close to the right hand edge of the specimen. 20 • Advances in Ceramic Armor IX Edge-On Impact Investigation of Fracture Propagation in Boron Carbide Figure 9. Selection of 6 high-speed photographs from test at 1010 m/s; Test no. 13357 A compilation of all measured fracture front (damage) velocities, cone crack and single crack velocities is shown in Table II.