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The propagation of fragment clouds in a pressurized steel container with PMMA (polymethylmethacrylate) side-windows was investigated. The fragment clouds were generated by hypervelocity impact of aluminum projectiles on 1 mm thick AlMg3 plates. Projectile diameters ranged from 2.0 mm to 4.4 mm. At impact velocities of around 7 km s -1 , kinetic energies varied between 269 J and 2950 J...
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