Body Armor

Description

Angle of Incidence - The angle between the line of flight of the bullet and the perpendicular to the front surface of the backing material fixture. Armor Carrier - A component of the armor sample or armor panel whose primary purpose is to retain the ballistic panel and provide a means of supporting and securing the armor garment to the user. These carriers are not generally ballistic resistant. Armor Panel - The portion of an armor sample that generally consists of an external carrier and its internal ballistic protective component(s) (e.g., the front and back panels). Armor Sample - One complete armor garment comprised of a single wraparound-style jacket, or a set (two) of front and back armor panels. Backface Signature (BFS) - The depth of the depression made in the backing material, created by a non-penetrating projectile impact, measured from the plane defined by the front edge of the backing material fixture. For armor tested on built-up or curved backing material, the BFS is measured from the plane defined by the top edges of the depression or crater formed by the impact. Backing Material - A homogenous block of non-hardening, oil base modeling clay, placed in contact with the back of the armor panel during ballistic testing. Backing Material Fixture - A box fixture containing the backing material, typically comprised of a rigid frame constructed of wood or metal with a removable wooden back. The wooden back is not used during Ballistic Limit testing. Baseline Ballistic Limit - The experimentally derived, statistically calculated impact velocity at which a projectile is expected to completely penetrate an armor component (sample, panel or ballistic panel) 50% of the time (V50). This velocity is also the velocity at which a projectile is expected to be stopped by the armor 50% of the time. Ballistic Panel - The protective component of an armor sample or panel, primarily consisting of ballistic-resistant materials, usually enclosed in a nonremovable cover. The ballistic panel is normally retained within the armor sample or panel by a separate fabric carrier, and may be removable from the carrier.

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