Structural Component that Will Fragment into Particles of Selected Geometry and Reactivity

Abstract

An embodiment in accordance with the present invention provides a method for creating and consolidating fragments and a useable structure formed from said consolidated fragments. The method includes swaging a metal powder into a first consolidated structure. The consolidated structure is ground to form particles and the particles are sifted to select those with a predetermined diameter. The particles having the predetermined diameter can then be swaged into a second consolidated structure. The resultant second consolidated structure is therefore configured to fragment controllably. The second consolidated structure can also be formed from reactive metal laminates such that the structure also has chemical energy.

What is claimed is: 
     
         1 . A method for forming a structural component that will fragment into particles of selected geometry and reactivity comprising:
 swaging a metal powder into a consolidated structure;   grinding the consolidated structure into particles;   sifting the particles to select particles for use having a predetermined diameter;   swaging the particles having the predetermined diameter into the structural component that will fragment into particles of selected geometry and reactivity.   
     
     
         2 . The method  claim 1  wherein the metal powder is configured to impart the particles with the selected reactivity. 
     
     
         3 . The method of  claim 1  wherein the consolidated structure takes the form of a rod. 
     
     
         4 . The method of  claim 1  wherein the structural component takes the form of a tube. 
     
     
         5 . The method of  claim 1  wherein swaging the structural component further comprises reducing a cross-sectional area of the structural component by half. 
     
     
         6 . The method of  claim 1  wherein the predetermined diameter is between approximately 1 mm to approximately 2.3 mm. 
     
     
         7 . The method of  claim 1  further comprising using a rotating die for swaging the metal powder. 
     
     
         8 . The method of  claim 7  wherein the rotating die further comprises a progression of dies. 
     
     
         9 . The method of  claim 1  further comprising using a rotating die for swaging the particles having the predetermined diameter. 
     
     
         10 . The method of  claim 9  wherein the rotating die further comprises a progression of dies. 
     
     
         11 . The method of  claim 1  wherein the metal powder comprises at least one of Al, Ni, Mg, and W. 
     
     
         12 . The method of  claim 1  further comprising packing the metal powder into a tube before swaging. 
     
     
         13 . The method of  claim 12  further comprising removing the tube after swaging. 
     
     
         14 . The method of  claim 12  wherein the tube comprises a steel tube. 
     
     
         15 . The method of  claim 1  wherein the metal powder comprises at least in part a metal fuel taking the form of Ti, Zr, or AlMg. 
     
     
         16 . A consolidated structure comprising:
 an elongate tube having a wall and a first end and a second end, said wall defining an elongate lumen extending from the first end to the second end;   wherein said wall is formed from particles having a predetermined diameter;   wherein said particles are swaged to form the elongate tube; and   wherein said particles are formed by swaging metal powder into a consolidated rod and grinding said consolidated rod into said particles.   
     
     
         17 . The structure of  claim 16  wherein the metal powder is configured to impart the particles with the selected reactivity. 
     
     
         18 . The structure of  claim 16  wherein swaging the elongate tube further comprises reducing a cross-sectional area of a wall of the structural component by half. 
     
     
         19 . The structure of  claim 16  wherein the predetermined diameter is between approximately 1 mm to approximately 2.3 mm. 
     
     
         20 . The structure of  claim 16  wherein the metal powder comprises at least one of Al, Mg, W, or Ni.