CRATERING PRODUCED IN METALS BY HIGHVELOCITY IMPACT
Abstract
Steel spheres having a diameter of 3/16 inch (0.476 cm) were accelerated with a 220 or 243 caliber smooth-bore gun up to velocities of 2.5 kilometers per second. The area, volume, and depth of the resulting craters were measured and plotted as a function of either the initial impact energy or momentum of the projectile. The crater volume was a linear function of the projectile energy. A relationship existed between the volume per unit energy and the static shear and compressive yield strengths. A plot of crater area versus projectile momentum had two linear segments. A region of negative slope for penetration versus projectile momentum was found for aluminum, lead, and magnesium targets. The other targets did not have this region. Partridge, VanFleet, and Whited (PB-128 423; 'Crater formation in metallic targets'. Journal of Applied Physics, 29:1332-1336 (1958)) presented data for many of the same targets impacted with spheres of the same material as the target. Comparisons were made between their data and the data obtained using steel spheres for the projectile. Correlation between the data was excellent in most cases.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 31, 1959
- Accession Number
- AD0609641
Entities
People
- D. K. Johnson
- E. P. Palmer
- E. T. Cannon
- Richard W. Grow
Organizations
- University of Utah