Penetration and perforation processes in metal targets at and above ballistic velocities

Experimental investigation of normal perforation of projectiles in metallic plates

“…A preliminary analysis of the ballistic problem (2] [3]. The main modifications to the previous analyses were the consideration of three rather than two stages for the perforation process and a more realistic description of plug formation and the associated shearing process.…”

“…High speed photographs were taken at different times after impact. Calculations based on the analysis of (1] were made for all the test conditions in this experimental program and also for a number of the experimental cases described in [3].…”

Towards Standardization in Terminal Ballistics Testing: Velocity Representation

“…This section is concluded by noting an appealing property of form (1) which is not preserved in the generalization to form (2).…”

“…Unhappily, such is not the case within the context of form (2) unless p is set at some fixed value. To be quite specific: suppose we are dealing with a target ensemble of two plates perforated by a *I i.e., g is Lebesgue measurable on (0, 1) and figir…”

“…Then we wjould like to say that y M a (X -vP)I/p and z = b (yq _ wq)I/q for some a, b, v, w, p and q. But the implied overall striking-residual connection is then z = ab [(xp _ vP)q/p -(w/a)q]l/q which does not conform to (2). This lack of closure under composition, while not stri ly an impairment to the present concern of supplying effective representations of velocity relationships, does preclude full matheinaiical consistency in the consideration of multiple plate targets.…”