US 11,877,389 B2
Additively manufactured energetic material anti-tamper feature and implementation
Mark Andrew Schoelen, Dallas, TX (US); Thomas Michael Deppert, Gilbert, AZ (US); and Reginald Bean, Center Point, IA (US)
Assigned to ROCKWELL COLLINS, INC., Cedar Rapids, IA (US)
Filed by Rockwell Collins, Inc., Cedar Rapids, IA (US)
Filed on Dec. 14, 2020, as Appl. No. 17/120,574.
Prior Publication US 2022/0192012 A1, Jun. 16, 2022
Int. Cl. G06F 21/86 (2013.01); H05K 1/02 (2006.01); C06B 33/00 (2006.01); C06C 15/00 (2006.01); H01L 23/00 (2006.01)
CPC H05K 1/0275 (2013.01) [C06B 33/00 (2013.01); C06C 15/00 (2013.01); G06F 21/86 (2013.01); H01L 23/573 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for forming an anti-tamper feature on an apparatus, the method comprising:
depositing, by an additive manufacturing method, a layer of an energetic material on a surface of a substrate, the layer having a thickness of about 1 micrometer to about 10 millimeters;
wherein a reaction of the energetic material is exothermic and at least partially fractures the substrate after the reaction is initiated;
wherein the additive manufacturing method is a direct write method, an aerosol jet method, or a fused filament fabrication method.