Abstract: A barrier for reduction of a shock wave. The barrier has a spatially graded structure in which a density of the structure varies across a thickness thereof. The graded structure includes a polymer having hollow containers dispersed in the polymer to provide the density of the graded structure. The barrier can be included in at least one of 1) an explosive device, 2) a war head, 3) a demolition charge, and 4) an explosive containment. These devices have an exterior housing and at least one partitioned segment inside the housing with the partitioned segment including the barrier for reduction of the shock wave. Partitioned sections of the explosive devices are selectively or in total detonated.

Abstract: An armor and a system for projectile neutralization. The armor has at least one serrated plate or louvered plate system. The serrated plate has a base, recessed lands, raised lands, and columnar projections extending from the recessed lands to the raised lands to form serrations on the serrated plate. The louvered plate system has a series of angled plates, a base, a top and a support structure connecting the louvered plates with the base and the top. The system has a serrated or louvered armor plate configured to reduce a kinetic energy of the projectile and re-orient the projectile upon rupture through the armor plate, and has a projectile-receptor configured to capture the projectile after rupture through the armor plate. Projectiles which impact on the serrated or louvered plate system have a kinetic energy thereof reduced and become re-oriented upon rupture through the serrated or louvered plate system.