Tungsten Fragment

Tungsten alloy fragmentation control has included providing grooves on either the external or internal surfaces of the wall of the case or a liner inserted into the case. The grooves create stress concentrations that cause the case to fracture along the grooves forming fragments. While these devices have demonstrated the ability to create fragments, they are not completely satisfactory for several reasons. One prior approach to inducing tungsten alloy fragmentation control to an integral warhead and missile structure has been to include grooves on either the external or internal wall surfaces of the structure to delineate fragments or projectiles in a combined warhead and missile structure. Explosives are installed in proximity to the grooves. When the explosives are detonated, the grooves create stress concentrations that cause the structure to fracture along the grooves, forming fragments. Still another approach is the dual-wall naturally fragmenting (and combination natural fragmenting and scored wall) warhead. While these types of warheads have provided somewhat of an improvement over single-wall naturally fragmenting warheads, current dual-wall designs generally require thermal conditioning manufacturing methods to mate walls together with tight circumferential tolerances.

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