ABSTRACT
To try and solve how best to protect people from flying projectiles, it is useful to have an understanding of how projectiles penetrate materials and structures. Penetration processes are affected by material properties of the penetrator and the target, the impact velocity and the geometry of the incoming projectile. Furthermore, it is found that how a projectile penetrates a target is frequently divided into two fundamental processes: sub-hydrodynamic – where the strength of the material is of great importance, and hydrodynamic, where the material strength takes a lesser role. These will now be reviewed in this chapter.
