By Jerry C. LaSalvia, Soshu Kirihara, Sujanto Widjaja
Ceramic Engineering and technology complaints quantity 34, factor five - Advances in Ceramic Armor IX
A selection of 14 papers from the yank Ceramic Society’s thirty seventh foreign convention on complicated Ceramics and Composites, held in Daytona seashore, Florida, January 27-February 1, 2013.This factor comprises 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 info for Advances in Ceramic Armor IX: Ceramic Engineering and Science Proceedings, Volume 34 Issue 5
Advances in Ceramic Armor IX • 23 Edge-On Impact Investigation of Fracture Propagation in Boron Carbide REFERENCES 1 D. S. J. D. C. Chhabildas, Dynamic behavior of boron carbide, J. Appl. E. Grady, Dynamic equation of state and strength of boron carbide, Cer. Eng. Sei. J. C. S. Burkins, Analysis of Shatter Gap Phenomenon in a Boron Carbide/Composite Laminate Armor System, Proceedings of 20th Int. Symp. C. W. J. Hemker, Shock-Induced Localized Amorphization in Boron Carbide, Science, Vol. 299, pp.
The numerical model is shown in figure 7 below. Simulation Results and Discussion The simulations were performed at impact velocity of 835 m/sec and pre-stress levels of 0, 200, and 400 MPa. Figure 7 demonstrates the process of the WC projectile penetration into 7 mm thick tiles with no prestress and with prestress of 400 MPa. The 2-D axisymmetric model lacks the ability to simulate the radial cracks of the alumina. Therefore the experimentally observed effect of the lateral prestress on the change in failure modes of alumina tiles (figure 6) cannot be observed in such a simulation.
The experimental DOP results, lateral stress measurements, 31 Effect of Prestressing on the Ballistic Performance of Alumina Ceramics and damage appearances will then be presented, followed by the numerical model and simulation results. 62x51 mm armor piercing (AP), tungstencarbide (WC) cored projectile, (Level III, STANAG 4569)8 on monolithic alumina tiles at different levels of prestress. The projectile's components, including the sharply conical core, are displayed in figure 1. The projectile core's hardness was measured to be 1345±10HV, which is nearly the same as that measured for the alumina test tiles (see table 1).
Advances in Ceramic Armor IX: Ceramic Engineering and Science Proceedings, Volume 34 Issue 5 by Jerry C. LaSalvia, Soshu Kirihara, Sujanto Widjaja