Abstract
We measure the stress and particle velocity histories of Lagrangian points in a plane initiation wave in PBX-9404 explosive. Stress histories calculated from velocity histories agree well with experiment and indicate that both types of gauges record faithfully in reactive flow. The inverse calculation is more difficult since errors accumulate in the computation. We describe and compare two computational methods: pathline and direct analysis. Our results show that a complete gauge analysis should use multiple bare velocity gauges, companion experiments with single insulated stress gauges and pathline analysis.
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