EOS Data of Ti‐6Al‐4V to Impact Velocities of 10.4 km/s on a Three‐Stage Gun
- Conference date: 24-29 June 2001
- Location: Atlanta, Georgia (USA)
Experiments were conducted to acquire Hugoniot data for Ti6‐Al‐4V at compressive stresses up to 250 GPa for use as a standard material on the three‐stage gun at Sandia. Ti‐6Al‐4V was chosen over several other standards because in previous work on the three‐stage gun it was most readily launched intact and flat. In each experiment, a graded‐density launch plate travelling at 6.3 or 6.7 km/s launches a Ti‐6Al‐4V flier plate to 9.8 or 10.4 km/s. The flier impacts a stationary target disk of Ti‐6Al‐4V. Shorting pins and optical fibers imbedded in the target serve as time‐of‐arrival sensors to determine the shock velocity. These also permit quantification of the bow and tilt of the flier plate, which are found to be comparable to shots on two‐stage guns. Corrections are made for the temperature of the flier in order to calculate the stress and particle velocity behind the shock.
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