The development of high-energy weapons could increase the velocity of projectiles to well over 1000 m/s. The nature of the injuries caused by the ballistic impact of projectiles at velocities much faster than 1000 m/s is unclear. This study characterizes the mechanical and biochemical alterations caused by high-speed ballistic impact generated by spherical steel ball to the hind limbs of the pi...

We explore electrically injected, spin-polarized transport in a ballistic two-dimensional electron gas. We augment the Büttiker-Landauer picture with a simple, but realistic model for spin-selective contacts to describe multimode reservoir-to-reservoir transport of ballistic spin-1/2 particles. Clear and unambiguous signatures of spin transport are established in this regime, for the simplest m...

Ballistic simulation of the spray sprinkler for self-propelled irrigation machines requires the incorporation of the effect of the jet impact with the deflecting plate. The kinetic energy losses produced by the jet impact with the spray plate were experimentally characterized for different nozzle sizes and two working pressures for fixed spray plate sprinklers (FSPS). A technique of low speed p...

[1] Measurements of Eulerian flow velocity obtained within the swash zone on a relatively steep beach face (gradient 1:23) are compared with an extended ballistic swash model. The model only requires a friction factor, beach slope and terminal bore velocity as input. The following model predictions matched well with observations: (1) The maximum Eulerian flow velocity is the shoreline velocity ...

Abstract In order to study the impact resistance of polyurea coating, a 12.7mm ballistic gun was used launch an load target plate, then velocity fragments before and after penetrating plate measured, limit specific absorption energy were calculated. At same time, combining with coating failure morphology, analyses anti-penetration effect protective under unit areal density. The research shows t...

In this study, we investigate double-laminated glass plates under ballistic impact through experimental tests and numerical simulations. The are used to determine the limit velocity curve for laminated targets, create a basis comparison with We tested two different pane configurations: (1) one plate, (2) layers of separated by an airgap. finite element simulations that employed higher order ele...

Mechanical behavior of Ultra-High Molecular Weight Polyethylene (UHMWPE) under high-velocity impact is critical for the design soft armor vests. Several types UHMWPE are available with different mechanical properties. However, no validated methodology has been published in literature to analyze influence stacking sequence combining materials maximize ballistic limit. In this work, a combined ex...

The effective equation describing the transport of passive tracers in nonsolenoidal velocity fields is determined, assuming that the velocity field U(r,t) is a function of both position r and time t, albeit remaining locally random. Assuming a strong separation of scales and applying the method of homogenization, we find a Fickian constitutive relation for the coarse-grained particle flux, as t...