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Velocity Interferometry For Time-Resolved High-Velocity Measurements

In the early days of shock wave investigations of the dynamic high-pressure properties of solid materials, the shock wave diagnostics consisted primarily of measurements of the shock velocity and the peak particle velocity in the shocked specimen. By the decade of the 1960's, however, it was already well recognized that the measurement of time-resolved particle velocity history or stress history, as opposed to only peak values, could provide valuable additional information concerning such material properties as phase changes, yield strengths, and rate effects.1