Results 211 to 220 of about 42,367 (255)
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Empirical Ballistic Limit Velocity Model for Bi-Layer Ceramic–Metal Armor
International Journal of Protective Structures, 2015An empirical model to estimate the ballistic velocity limit (BLV) of bi-layer ceramic–metal armor materials, considering momentum and energy balance during impact process, is proposed. Three ceramic materials as front layer, namely: alumina (Al2O3 96%) boron carbide (B4C) and silicon carbide (SiC) and three materials as backing layer, namely ...
Ahmad Serjouei +3 more
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Two-scale modeling of high-velocity fragment GFRP penetration for assessment of ballistic limit
International Journal of Impact Engineering, 2017Abstract The present paper deals with the ballistic testing and numerical modeling problems of fragment penetration of glass fabric/epoxy-phenolic (GFRP) laminates. Two laminates of different thickness (1.95 and 3.90 mm) were subjected to ballistic impact of 6.35 mm dia steel sphere as a fragment simulator at different velocities to get ballistic ...
M.V. Zhikharev, S.B. Sapozhnikov
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International Journal of Impact Engineering, 2012
Abstract This paper presents an experimental and numerical study to estimate ballistic limit velocity, V 50 , of plain-weave hybrid S2-glass-IM7 graphite fibers/toughened SC-79 resin composite beams. The tests were conducted on hybrid S2-glass-IM7 graphite fibers/toughened SC-79 resin and non-hybrid S2 glass-fiber/toughened SC-79 resin composites ...
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Abstract This paper presents an experimental and numerical study to estimate ballistic limit velocity, V 50 , of plain-weave hybrid S2-glass-IM7 graphite fibers/toughened SC-79 resin composite beams. The tests were conducted on hybrid S2-glass-IM7 graphite fibers/toughened SC-79 resin and non-hybrid S2 glass-fiber/toughened SC-79 resin composites ...
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Whipple shield ballistic limit at impact velocities higher than 7Km/s
International Journal of Impact Engineering, 2001Abstract The Whipple bumper shield was the first system developed to protect space structures against Meteoroids and Orbital Debris (M/OD), and it is still extensively adopted. In particular, Whipple shields are used to protect several elements of the International Space Station, although the most exposed areas to the M/OD environment are shielded by
D. PALMIERI, M. FARAUD, MARCHETTI, Mario
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Numerical Investigation on Ballistic Limit Velocity of Armour Materials
International Journal of Current Engineering and Technology, 2018The Threats to public security and premises security are on the rise because of increasing terrorism and violence. Safety of individual is a matter of concern, hence there is need to develop bullet resistant solutions for soldiers, tanks, and other military vehicles.
Suresh Periyasamy +2 more
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The limit velocity and limit displacement of nanotwin-strengthened metals under ballistic impact
Acta Mechanica, 2017A new category of structural metals with high strength and good ductility is coarse-grained metals strengthened by nanotwinned (NT) regions. This unique combination makes them particularly suitable for applications in bulletproof targets. The extent of this improvement, however, depends on the volume fraction of the NT regions and multiple other ...
Q. D. Ouyang +4 more
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Estimation of Ballistic Limit Velocities for Woven Composite Beams
Volume 11: Mechanics of Solids, Structures and Fluids, 2009This paper presents an experimental and numerical study to estimate ballistic limit velocity, V50, of plain-weave hybrid S2 glass-IM7 graphite fibers/toughened SC-79 resin (cured at 177°C) composite beams. The tests were conducted on hybrid S2 glass-IM7 graphite fibers/toughened SC-79 resin and nonhybrid S2 glass-fiber/toughened SC-79 resin composites ...
E. Sevkat +3 more
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Ballistic limit velocity for long rods from ordinance velocity through hypervelocity impact
International Journal of Impact Engineering, 1999The ballistic limit velocity for long rods impacting targets of finite thickness is explored in a range from ordnance velocity though hypervelocity impact. While several formulas have existed for some time, notable ones of Recht and Ipson, Woodward and de Morton, and Lambert are limited because they either relate primarily to only short rods, bullets ...
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Ballistic limit velocity of empty rectangular metal columns under a blunt projectile penetration
The Journal of Defense Modeling and Simulation: Applications, Methodology, Technology, 2015This paper studies the ballistic limit velocity of empty rectangular columns under a blunt projectile penetration, theoretically and numerically. The deformation mechanism of the empty column is considered as plugging. The projectile is assumed to be a flat-ended cylinder without deformation.
Abbas Niknejad, Amin Zareei
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International Journal of Impact Engineering, 2003
Abstract The study of materials under dynamic external loads requires the knowledge of their dynamic response or else their deformation behavior under quickly varying loads (Impact dynamics, Wiley, New York, 1976; High velocity impact dynamics, Wiley, New York, 1990).
DI SCIUVA, Marco, FROLA C., SALVANO S.
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Abstract The study of materials under dynamic external loads requires the knowledge of their dynamic response or else their deformation behavior under quickly varying loads (Impact dynamics, Wiley, New York, 1976; High velocity impact dynamics, Wiley, New York, 1990).
DI SCIUVA, Marco, FROLA C., SALVANO S.
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