Fragment tests after MIL-STD 2105 B

Explosively formed projectiles (EFP) charges with 16g liner mass will be ve ry suitable for the fragment impact tests of the MIL-STD-2105 B. They achie ve the required velocity of 2530 m/s with about 80 g HE. 3 to 5 EFP generat ors can be fired simultaneously with less than +/- 1 mus jitter or with any intended time differences. The fragments can be very accurately aimed to t he wanted hit position on the test item. These low cost devices do not resu lt in cubic fragments with 12.6mm side length; they are hemispherically sha ped. However, depending on side-on, edge-on or tip-on impacts, cubic fragme nts have more than a factor of 2 threshold velocity differences. Therefore much more reliable results with a spherical or hemispherical fragment shape on the impact will be achieved.