Weldable metal composites and methods

摘要

The present invention is directed to an improved laminated, sound damping resistance weldable composite and a method for its manufacture. The metal composite structure ( 10 ) features two metal members ( 12 )( 14 ) sandwiching a viscoelastic layer ( 26 ) where the viscoelastic layer entrains electrically conductive particles ( 28 ). Barrier elements ( 32 ) ( 34 ) are disposed between the metal members and the viscoelastic layer to inhibit and/or prevent contaminant migration into the metal from the viscoelastic layer and/or conductive particles during welding.