Impact spallation experiments - Fracture patterns and spall velocities

Details Impact spallation experiments - Fracture patterns and spall velocities Impact spallation experiments - Fracture patterns and spall velocities

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...87..140p&link_type=abstract

Icarus (ISSN 0019-1035), vol. 87, Sept. 1990, p. 140-155.

Computer Science

32

Hypervelocity Impact, Impact Damage, Meteorite Collisions, Meteorite Craters, Planetary Evolution, Spallation, Asteroids, Meteoritic Composition

Scientific paper

The spall velocities produced by nine experimental impacts of 1 to 6.5 km/sec into San Marcos gabbro targets, using projectiles of Fe, Al, Pb, and basalt of various sizes, have been measured in conjunction with fragment-velocity high-speed filmings of the events. A detailed comparison is made between measured spall velocities and those predicted by the model of Melosh (1984), with a view to the compatibility of small-scale results and large planetary impacts. Attention is also given to the patterns of internal fracture generated by impact within the targets.

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