Ammunition size is usually expressed in terms of calibre, which is the diameter of the projectile as measured in millimetres or inches.
The impact resistance of the C/C composites is affected by the diameter of the projectile, the temperature and thickness of the C/C laminates and - more importantly – by the impact velocity.
The investigation was performed experimentally using a custom-made gas gun rig, and by using Finite Element and developing a phenomenological analytical model to predict the residual velocity and ballistic limit equations for the case in which the diameter of the projectile is close or smaller to the honeycomb cell length.
Find a suitably-sized drill bit matching the diameter of the projectile or a pre-drilled piece of piping.
Furthermore, the less the mass of the impactor or the greater the diameter of the flat projectile, the greater the ballistic limit of GLARE.
Further, effect of incident ballistic impact velocity on contact duration and residual velocity, effect of projectile diameter and mass on ballistic limit velocity and effect of target thickness on ballistic limit velocity and contact duration are studied.
The results were compared with experimental data and good correlation was observed for a range of projectile masses and diameters, as well as composite thicknesses.
The three target diameters were D= 1.83, 1.37, and 0.91, so the ratios of the target diameters to the projectile diameter were D/d= 24, 18, and 12.
The residual velocity of projectile and the scabbing diameters on the rear surface of SFRC target predicted by proposed method show well agreement with the experimental results.
From the data set for 23 impact craters, damage equations have been obtained which give the crater depth (diameter) in terms of the dependence on impact velocity, projectile diameter and projectile density.
