Abstract
The effect of the impact angle of projectiles on the crater shape and ejecta in thick aluminum alloy targets was investigated in hypervelocity impacts. When polycarbonate projectiles and aluminum alloy 6061-T6 target were used, the impact angle of the projectiles clearly affected the crater shape, as expected. The impact angle also affected the ejecta mass, ejecta size and scatter angle. However, the effect at 15 ∘ and 22.5 ∘ was not great. When the impact angles were 30 ∘ and 45 ∘ , the effect was clearly confirmed. The impact angle clearly affected the axial ratio of ejecta fragments, c / a .
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