Explosive blast shield for buildings
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsAlyssa A. Littlestone, Philip J. Dudt
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Abstract
A composite shield comprises a panel including an outer thin metallic strike surface layer, a highly strain rate hardening polymer layer and an inner structural armor plate layer. The structural armor plate layer has a multiplicity of traversing ports. The traversing ports have sufficient lateral area to allow deformation of the thin metallic strike surface layer and highly strain rate hardening polymer layer through the structural armor plate layer on the occurrence of explosive blast.
Claims9
A laminar blast shield panel including abutting layers consisting essential of:
- (a.) a ductile strike layer including a metallic strike surface layer having a thickness of 0.001 to 0.25 inches;
- (b.) a structural armor plate layer having an array of traversing ports, each traversing port having sufficient lateral area to allow deformation of the ductile strike layer through the structural armor plate layer.
A laminar blast shield panel consisting essentially of:
- (a.) a ductile strike layer including in sequence:
- (i.) a metallic strike surface layer having a thickness of 0.001 to 0.25 inches,
- (ii.) a confined, highly strain rate hardening polymer layer having a thickness of 0.005 to 0.25 inches, and
- wherein in the highly strain rate hardening polymer layer, the polymer is characterized in hardening at strain rates of 1,000/second and greater, and
- (iii.) a second metallic layer having a thickness of 0.001 to 0.25 inches;
- (b.) an abutting structural ballistic armor plate layer having an array of traversing ports there through, each traversing port having a diameter of 0.25 to 2 inches.
Dependencies are inferred from the claim text.