Definitions for "Shot peening"
Keywords:  peen, fatigue, bombarded, blast, stress
When a material is bombarded with small, round steel shot (i.e. bb's, buckshot) at high velocities, it is termed shot peening. This process will increase the resistance to fatigue failure by adding dislocations and hardening the surface, which is where a crack may begin due to surface flaws.
A cold-working process in which the material surface is peened to induce compressive stresses and thereby improve fatigue life.
A process whereby hard, small, spherical objects (such as metallic shots) are propelled against a metallic surface for the purpose of cleaning or descaling that surface.