Non-shock mechanical loading can induce reaction of explosive materials, and may result in the failure of munitions to perform as intended in impact scenarios. To characterize the ability of Air Force explosive materials to successfully withstand impact conditions, the High Explosive Survivability Test (HEST) was developed. The lab-scale experiment applies a combined axial load and shear/friction condition to a 2 lb. charge of explosive via a gas gun launch driven 40 lb. projectile. The test is conducted over a span of projectile velocities to determine the likelihood of a prompt and significant impact-induced reaction of the explosive. The mechanical loading conditions are then determined via modeling and simulation to characterize the impact survivability of the explosive. In this work, we characterize multiple explosives and present lessons learned in the development and utilization of this impact survivability test.
Distribution Statement A: Approved for public release. Distribution unlimited (AFRL-2021-4289)