Experimental studies on the effect of size and shape of holes on damage and microstructure of high hardness armour steel plates under ballistic impact

Analysis of ASB assisted failure in a high strength steel under high loading rate

“…1 and 2. The observation of the notch lip of the plate impacted at 156 m/s revealed the presence of adiabatic shear bands -adiabatic shear bands were also observed in an armor steel (with a close chemical composition) after impact by a 7.62 mm projectile, see [4] and [5], and in explosively welded steel-aluminum plates after ballistic impact, see [6]. Adiabatic shear banding is a process of localized deformation occurring under high loading rate involving (quasi) adiabatic conditions and mostly resulting from the competition between strain hardening and thermal softening, see e.g.…”

Optimization of high hardness perforated steel armor plates using finite element and response surface methods

“…They also concluded that the perforation diameter is crucial for ballistic performance. In the experimental studies of Mishra et al [8,9], they found that the performance of an armor plate can be dramatically enhanced by drilling regular pattern 4 of holes. In a recent study, Balos et al [10] examined ballistic performance of perforated plates made of austempered ductile iron.…”

The Effect of Bad Heat Treatment Technology on Failure Mode of Armor Steel Sheet under EN1522 Ballistic Test

“…Armor steel is such grade of steel, which is distinguished by its high strength and energy absorbing properties, offering many armor applications for personnel, military and non-military vehicles. Failure modes of this grade of steel were well analyzed in different occasions [1]. Four root causes were well mentioned in different occasions:…”