Chemical Engineering

Advances in Ceramic Armor IV (Ceramic Engineering and by Lisa Prokurat Franks, Tatsuki Ohji, Andrew Wereszczak

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By Lisa Prokurat Franks, Tatsuki Ohji, Andrew Wereszczak

This quantity offers a one-stop source, compiling present examine on ceramic armor and addressing the demanding situations dealing with armor brands. it's a selection of papers from the yankee Ceramic Society s thirty second overseas convention on complicated Ceramics and Composites, January 27-February 1, 2008. issues comprise novel fabrics ideas for either automobile and physique armors, obvious ceramics for influence resistance, and extra. it is a important, up to date source for researchers in undefined, executive, or academia who're operating with ceramic armor.

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Extra info for Advances in Ceramic Armor IV (Ceramic Engineering and Science Proceedings, Vol. 29, No. 6)

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6 MHz. Advances in Ceramic Armor IV . , different pummel ratings, see Tebles I and 11. Based upon the results shown in Figures 6 and 7. 6 MHz. The general arrangement of the experimental setup consisted of a pulser-receiver, a pair of piezoelectric angle-beam transducers and adjustable wedges, a filter, one analog-to-digital board and waveform storage software, see Figure 1. Both the sending transducer and the receiving transducer were located on the same side of the laminated glass specimen. A holding fixture was used to maintain an adjustable fixed separation distance between the sending and receiving transducers, and to allow the transducers to be moved as one unit.

Advances in Ceramic Armor IV Adhesive Bond Evaluation in Laminated Safety Glass Using Guided Wave Attenuation where "h" is the thickness of the PVB layer, kp is the complex wave number, and &p and T ~ j are p the reflection and transmission coeficients, respectively. The subscript GP means that the wave travels from the glass layer into the PVB layer, and vice versa for the subscript PG. The reflection and transmission coefficients can then be expressed as: RPG , ,z - Z p h z & +~' p b = Tp(, 9 = 1- 4 , r - Ri,p = -Rw, - T(,r = 1+ 1 , r (5) where ZS,",, and Zpb are the acoustic impedances for the glass plates and the PVB interlayer.

Fragment shapes and sizes in the tunnel surrounding embedded projectiles suggest penetration occurs by comminution of material at the nose of the advancing projectile and subsequent flow of the fine fragments out of the projectile path into more coarsely fragmented tunnel material. The observations and measurements are being used to develop a physics-based model that enables computational simulations of glass penetration scenarios and design of transparent armor. INTRODUCTION A goal of the Army is to reduce the weight of vehicle windows while meeting ballistic performance requirements.

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