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
Descriptors:
Subject Categories:
- Aircraft
- Metallurgy and Metallography
- Ballistics