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The results of catastrophic disruption experiments on static and rotating targets are reported. The experiments used cement spheres of diameter 10cm as the targets. Impacts were by mm sized stainless steel spheres at speeds of between 1 and 7.75km s−1. Energy densities (Q) in the targets ranged from 7 to 2613Jkg−1. The experiments covered both the cratering and catastrophic disruption regimes. For...
The variation of impact crater size in rock has been investigated as a function of target temperature in the range 150 K – 1150 K. Three rock types were used: limestone, sandstone and basalt. A total of thirty impacts were observed, at a typical impact speed of 5 km s-1 with a 0.8 mm diameter stainless steel spherical projectile. The three rocks behaved in two ways. The craters in limestone and sandstone...
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