High Pressure Hugoniot Data Obtained with a Manganin Piezoresistive Pressure Transducer
Final rept. 4 Jan-8 Oct 1968
ARO INC ARNOLD AFS TN
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The investigation was initiated to develop the capability of making Hugoniot solid equation-of-state measurements using a piezoresistive pressure transducer and a two-stage light-gas gun. A Manganin-epoxy transducer was successfully developed to measure pressures up to 350 kilobars when impacted by high velocity cylindrical projectiles of the material being tested. The calibration of the transducer was verified by two independent methods using materials for which the Hugoniot was known. Finally, the technique was used to determine Hugoniot data for tape-wound silica phenolic, carbon phenolic, and poco graphite in a pressure region where previous data did not exist. The technique wherein piezoresistive transducers are used in conjunction with two- stage light-gas guns is unique in its ability to provide high pressure Hugoniot data for this class of materilas at modest cost.
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