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.
Highlights
In recent years, increasingly complex battlefield environments have created higher demands for the maneuverability of tanks and heavy armor, making lightweight and high-strength composite armor a research focus in the field of armored passive defense
Most of them are sandwiched between two layers of metal materials, or sandwiched between two layers of metal materials, which can improve the mobility of armored vehicles without reducing the defense capability of armor.Typical nonmetallic composite materials include rubber, ceramics, aramid fiber, and carbon fiber composite materials (Withers J C et al.,2011; Meffert and Milewski, 2002) Among these, carbon fiber composite materials are highly favored in the field of composite armor due to their excellent tensile properties
A penetration energy equation was obtained for the fragment penetration of carbon fiber target plates
Summary
Increasingly complex battlefield environments have created higher demands for the maneuverability of tanks and heavy armor, making lightweight and high-strength composite armor a research focus in the field of armored passive defense. Zhu et al (1992) and Morye et al (2000) studied the penetration process and perforation mechanism of fragments with different shapes impacting composite target plates. Pandya et al (2013) conducted ballistic impact tests on different hybrid composite materials to study the damage modes of the target plates. If the shear stress exceeded the shear strength of the target plate, the ply failed during shear, and those that did not fail experienced a tensile strain On this basis, Razali et al (2014) studied the relationship between the failure mode of the target plate and the energy absorption characteristics of the target plate. Through the study of the penetration effect of carbon fiber target, the damage characteristics of carbon fiber target are analyzed, and the change trend of damage effect with the impact velocity of fragments is studied. We conducted armor piercing tests using tungsten spheres of different diameters launched from a 14.5-mm ballistic gun and obtained good agreement between the test results and the calculated values
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