Dynamics of multi layered fragment separation by explosion

• Individual spherical fragment projection angle and velocity recorded in the experiments.
• Spatial dispersion analyzed for single, double and triple layered fragment configurations.
• Observed fragment deformations explained using shock theory.
• Fragments in contact with explosive disperse more than outer layer fragments.

Spatial dispersion of a Fragment Generator Warhead (FGW), in terms of projection angle and velocity, is essential to focus the maximum number of fragments on the target missile for effective neutralization. The authors carried out experiments to study the fragment dispersion in single, double and triple layered FGW configurations with tungsten alloy fragments. The projection angle and velocity are estimated by capturing the fragments in straw boards panel and correlating their position on the FGW. The paper presents the explanation of the phenomenon of fragment dispersion and deformation using one dimensional shock theory.