High-Rate Mechanical Response and SEM Morphology of EX99 Gun Propellants

Report No. ARL-TR-2463
Authors: Michael G. Leadore and Robert J. Lieb
Date/Pages: April 2001; 42 pages
Abstract: Two lots of EX99 gun propellants from the Naval Surface Warfare Center (NSWC) were tested in uniaxial compression to an end strain of ~60%. The materials were preconditioned at test temperatures of 21 degrees, 50 degrees, and -20 degrees C while at ambient pressure. The stress at failure, strain at failure, compressive modulus, failure modulus, incremental energy density (IED), and the fracture assessment values (FAV) were recorded for each test. These materials were also evaluated for microstructure using a scanning electron microscope (SEM).
Distribution: Approved for public release
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Last Update / Reviewed: April 1, 2001