Ballistic Properties of Zylon for Application to Firearm Projectile Protection
Interim rept. Aug 2001-Apr 2002
CALIFORNIA UNIV BERKELEY DEPT OF MECHANICAL ENGINEERING
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In recent years, a para-phenylene benzobisoxazolc fiber, Zylon registered trademark of the Toyobo Company, has surfaced as a potential candidate for body armor to possibly replace Kevlar registered trademark of DuPont. Zylons effectiveness depends on its ballistic properties as well as its mass in comparison with Kevlar. The present extended investigation focuses on determining the ballistic limit and the V50 velocity for 10, 20, and 30 stitched plies of Zylon using standard North Atlantic Treaty Organization 9-mm nonrotating strikers. This report concentrates specifically on the ballistic limit of 10-ply Zylon, as well as the effect that impact location has on perforation. It was also discovered that many other factors affect the ballistic performance, including slip of the fabric in the holder, the preparation of the shell, and the amount of fiber damage present. These aspects will be considered when evaluating Zylons performance and determining whether or not it is indeed superior to Kevlar for applications in body armor and personnel protection. The first instance of perforation for 10-ply Zylon occurred at an initial velocity of 341.4 ms, and the highest initial velocity for a ricochet was 566.2 ms.
- Protective Equipment