An impact technique to accelerate flier plates to velocities over 12 km/s |
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Authors: | L. C. Chhabildas J. E. Dunn W. D. Reinhart J. M. Miller |
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Affiliation: | * Sandia National Laboratories, Albuquerque, New Mexico 87185, USA ** University of Nebraska, Lincoln, Nebraska, 68588, USA |
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Abstract: | Very high pressure and acceleration is necessary to launch flier plates to hypervelocities. In addition, the high pressure loading must be uniform, structured, and shockless, i.e., time-dependent to prevent the flier plate from either fracturing or melting. In this paper, a novel technique is described which allows the use of 100 GPa megabar loading pressures and 109-g acceleration to launch intact flier plates to velocities of 12.2 km/s. The technique has been used to launch nominally 1-mm thick aluminum, magnesium, and titanium alloy plates to velocities over 10 km/s, and 0.5-mm thick aluminum and titanium alloy plates to velocities of 12.2 km/s. |
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