Accession Number:

AD0707837

Title:

AN INVESTIGATION OF PERFORATION MECHANICS IN THIN ALUMINUM PLATES

Descriptive Note:

Master's thesis

Corporate Author:

AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s):

Report Date:

1970-06-01

Pagination or Media Count:

78.0

Abstract:

The Nishiwaki theory of penetration was investigated for seven projectile shapes against three thicknesses of 6061-T6 aluminum target material. The projectiles were fired from a 50 caliber gun at impact velocities near 500 msec. Initial velocities and projectile velocity losses were measured by flash x-rays and chronographs. The same projectile shapes were also used to perforate identical targets quasi-statically with a laboratory universal testing machine. This provided the empirical information necessary to the application of the Nishiwaki theory. The basic Nishiwaki equations were found to be inaccurate for most projectile shapes. A modification of this theory was investigated and found to be accurate in predicting projectile velocity losses to within 8 msec at impact velocities near 500 msec. Additional proposed penetration models are presented but not investigated. Author

Subject Categories:

  • Aircraft
  • Metallurgy and Metallography
  • Ballistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE