Patent ID: 7794808
Filing Date: 2010-09-14
Classification: B29C,B29K,B32B,F41H,Y10S,Y10T

Abstract:
1. A laminar composite structure comprising three adjacent layers, said three adjacent layers being a structural first layer, a highly strain-rate-sensitive elastomeric second layer and a structural third layer, said highly strain-rate-sensitive elastomeric second layer confined between said structural first layer and said structural third layer, said highly strain-rate-sensitive elastomeric second layer made of an elastomer selected from the group consisting of polyurethane, polyurea and a mixture thereof and characterized by a Young's modulus in the range of approximately 700-1000 psi at 100% strain, said highly strain-rate-sensitive elastomeric intermediate layer further characterized by high strain-rate-sensitivity hardening in the strain rate range of approximately 10 3 /second-10 6 /second in association with a ballistic and/or explosive event.