Perforation of Aluminum Armor Plates with Fragment-Simulating Projectiles
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Experiments with fragment-simulating projectiles (FSP) and aluminum plates are conducted to evaluate the performance of various aluminum alloys and plate thicknesses to resist perforation against fragments. Ballistic-limit velocity data for several aluminum alloys and plate thicknesses are presented in several US Army Research Laboratory (ARL) reports. In this study, we present additional ballistic-limit data for plates thinner than the plates reported by ARL. In addition, we present an equation that predicts the ballistic-limit velocity for fragment-simulating projectiles (FSP) that perforate aluminum armor plates. The ballistic-limit equation is presented in terms of dimensionless parameters so that the geometric and material problem scales are identified. Predictions and data from two different fragment-simulating projectiles and two different strength aluminum alloys show the range of plate thicknesses for reasonable model predictions.
KeywordsFragment-simulating projectiles Aluminum armor plates Scaling law
This material is based upon work supported in part by the U. S. Army Research Laboratory and the U. S. Army Research Office under Grant Number W911NF1710241. The authors would also like to thank Denver Gallardy of the U.S. Army Research Laboratory (Aberdeen Proving Ground, MD) for his comments and insightful discussions.
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