Experimental research on tungsten alloy spherical fragments penetrating into carbon fiber target plate

Abstract

A ballistic projectile launching device was used to study the penetration behaviors of tungsten alloy spherical fragments of various diameters into carbon fiber composite target plates of different thicknesses. Based on the ballistic test results, we obtained the relationship between ultimate penetration velocity, target plate thickness, and fragment diameter as well as the relationship between the fragment penetration energy and fragment incident velocity. Using dimensional analysis, we obtained a formula relating the incident fragment velocity and the fragment penetration energy, which showed good agreement with the experimental values. We also analyzed the main fracture mode and the energy absorption mechanism of the carbon composite target plate under high-velocity impacts of tungsten alloy spheres and investigated the experimental damage modes of the target plate at different fragment velocities during the ballistic impact.

Study on Bulge State of PCrNi3MoV Target Plates Penetrated by Square Fragments

“…In the early twentieth century, Buckingham proposed that every law of physics could be expressed by several dimensionless quantities. Bridgman referred to this as the π theorem, which became an important method in dimensional analysis [10].…”

“…In the study of the fragment penetration in a finite-thickness target plate, the ultimate penetration velocity is usually used to characterize the penetration ability of fragments into the target plate. In 2021, Hong et al [10] used the dimensional analysis method to study the relationship between the target penetration energy required by the fragment and the fragment velocity when the tungsten alloy fragment completely penetrates the carbon fiber target plate, and established the corresponding prediction formula. When studying the penetration problem of an infinite-thickness plate or when the fragments are not able to penetrate through the target plate, the penetration depth is used to characterize the penetration performance.…”