Precise Control Technique for Flatness of Flyer under Explosive Loading

Based on the effective charge length model, the flyer flatness under explosive loading is improved by increasing the thickness of the attenuation plate gradually along radial orientation. The experimental results show that the difference of shock wave front arrival time is less than 80 ns within a range of 80 mm. The area, which is suitable for setting multiple samples in shock compression experiments, is enlarged by about four times than before. Measurements on shock Hugoniot data of tantalum and sound velocities of copper were performed by using the developed explosive loading technique. The obtained experimental data are all in excellent agreement with previously published results, showing that the new explosive loading technique can be used for multi-physics parameter measurements in shock compression experiments.