Spall Strength of Tungsten Carbide

Report No. ARL-TR-3335
Authors: Dattatraya P. Dandekar
Date/Pages: September 2004; 28 pages
Abstract: Spall strength of a hot-pressed tungsten carbide manufactured by Cercom Inc., referred to as CER-WC, is determined by performing plane shock wave experiments as a function of shock-induced compressive stress and its duration. Shock-induced stress varied between 3.5 and 24 GPa. The duration of shock-induced stress, i.e., pulse width, ranged from 0.35 to 1.13 μs. These experiments showed that CER-WC retained substantial spall strength to 24 GPa, i.e., around 3x the value of the Hugoniot elastic limit. Spall strength of CER-WC was not significantly influenced by the pulse-width of shock-induced compression. Spall strength of CER-WC decreased from a value of 2.06 ± 0.04 to 1.22 ± 0.38 GPa as shock-induced stress increased from 3.4 to 24 GPa.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2004