Multidirectional Peak Pressure Gauge for Strong Shock Waves

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Abstract
A gauge using a spherical Lucite shell as the active element has been developed to measure peak pressures in strong shock waves. The instrument is insensitive to orientation, simple in design, and relatively easy to construct. The gauge tested is useful in the ranges of 46 to 110 and 180 to 220 kbar. Theory and characteristics of operation are discussed and calibration results are presented. The gauge was designed to measure shocks from an underground nuclear explosion, but the principle has wider applications. Methods for extending the usable pressure range of the gauge by impedance mismatching techniques are discussed briefly.
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