The Ballistic test on Double-Layer Shaped Charge Liner fabricated by Kinetic Spray

Since shaped charge is a weapon that is traditionally intended to penetrate armor, the explosion performance of it was relatively less important and low. The liner, which is the core part of shaped charge, is generally formed as Cu because of good penetrability. The double-layer liner was designed to increase the explosive power of the shaped charge and to enhance the performance of the weapon through the explosion after penetration. Reactive Al and Al-Ni coating layers were successfully deposited on the cone-shaped Cu liner via kinetic spray to prepare a double-layer liner. A ballistic test was conducted to compare the explosive power between single Cu liner and double-layer liners. The explosion of the reactive coating layer was confirmed by a high-speed camera. Alumina and Intermetallic compound of Al-Ni, which are evidence of the explosion reaction, were investigated by EDAX, XRD. Al₂O₃ and AlNi were detected on 4th target plate, which means that an explosion occurred after penetration. The explosive power of the liners was compared by measuring the penetration area of target plate and the number of broken support bolts. The explosive power of double-layer liner was higher than that of the single liner.