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Microcraters formed in glass by low density projectilesMicrocraters were produced in soda-lime glass by the impact of low density projectiles of polystyrene (p = 1.06 g/cu cm) with masses between 0.7 and 62 picograms and velocities between 2 and 14 km/s. The morphology of the craters depended on the velocity and the angle of incidence of the projectiles and these are discussed in detail. It was found that the transitions in morphology of the craters formed by polystyrene spheres occurred at higher velocities than they did for more dense projectiles.
Document ID
19720005848
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Mandeville, J.-C. (ONERA Paris, United States)
Vedder, J. F. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
September 2, 2013
Publication Date
January 1, 1971
Subject Category
Materials, Nonmetallic
Report/Patent Number
NASA-TM-X-67469
Accession Number
72N13497
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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