The Qualification of Target Materials Using the Integral Theory of Impact

摘要

A series of impact tests was conducted in the A.R.A.P. Impact Facility on a wide range of target materials. The penetration data obtained from these tests were used in conjunction with the simple code of the A.R.A.P. Integral Theory of Impact to evaluate two characteristic properties for each target material. One of these properties, E*p, represents the energy absorbed by the target during plastic deformation; the other, E*e is the elastic energy absorbed by the target. Knowledge of these two parameters is essential if one is to rationally design either a more effective armor system or a better penetrator. Coincident with the test program, a theory has been developed which relates these two properties to fundamental material properties which can be measured in static tests. This theory accounts for both strain-rate effects and material property changes due to shear heating. Because it clearly identifies the properties which most influence material response the theory can be used to identify candidate armor (or penetrator) materials. (Author)