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- W611646369 abstract "The report discusses hypervelocity impact on rock targets using a light-gas gun with Zelux projectiles (solid and water-filled). The specific energies for rock breakage range from 120 to 260 joules/cc (1,400 to 3,200 ft-lb/cu in.) for Indiana limestone, and from 80 to 120 joules/cc (900 to 1,500 ft-lb/cu in.) for Milford Pink granite. Rock descriptions and strength properties are included. Previous work on basalt by Gault (NASA) and Moore (USGS) is included. The specific energies compared to specific energies incurred by other potential drilling techniques indicates that high velocity solid impact is a potential method to increase drilling rates. A potential method is developed to calculate hydrodynamic crater volumes for given impact energies. The general problem is outlined whereby the strong shocks generating the hydrodynamic crater can be extended to include spall and fracture effects. (Author)" @default.
- W611646369 created "2016-06-24" @default.
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- W611646369 date "1969-01-22" @default.
- W611646369 modified "2023-09-26" @default.
- W611646369 title "ROCK BREAKAGE BY LIGHT-GAS GUN PROJECTILES" @default.
- W611646369 hasPublicationYear "1969" @default.
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