Open Access Open Access  Restricted Access Subscription or Fee Access

Fragment-Simulating Impacts into Aluminum Plates

TERESA FRAS, , REAS KLAVZAR, THOMAS WOLF

Abstract


40 mm-thick AA7020-T651 (AlZn4.5Mg1, 3.4335) plates are tested during impacts with fragment-simulating projectiles accelerated to the impact velocity close to 1100 m/s. The penetrator/target interaction is verified based on impacts of not only standardized 20 mm fragment-simulating projectiles (FSPs) but also blunt, quasi-conical and hemi-spherical projectiles, since the projectile’s nose shape influences its perforation capacity. Depending on the nose shape, different failure modes are observed in the aluminum plates. Analysis of material deformations and changes in its microstructure is presented aiming to obtain better understating of ballistic properties of plates considered as thick (regarding the ratio of projectile diameter/plate thickness) under impact of artillery shell fragments.

Full Text:

PDF