John Molnar

US Patent:

54731224, Dec 5, 1995

Filed:

Jan 4, 1993

Appl. No.:

8/000087

Inventors:

Srinivas Kodiyalam - Schenectady NY
Clyde V. Stahle - Downingtown PA
Dennis H. Hill - Pottstown PA
John D. Molnar - Langhorne PA
John A. Chionchio - Hatboro PA

Assignee:

Martin Marietta Corporation - East Windsor NJ

International Classification:

F16F 700

US Classification:

181207

Abstract:

A passive damping mechanism for a panel member in which a bonding layer is disposed on each side of the panel, a damping layer is disposed on each of the two bonding layers, and a constraining layer is disposed on each of the two damping layers. Each of the above-mentioned layers is coextensive with the respective panel surfaces to which it is attached. The bonding layers are preferably made of an aramid fiber material. The damping layers are preferably made of a viscoelastic material. The constraining layers are preferably made of an aluminum-graphite metal matrix composite material. In addition, the coefficient of thermal expansion of each bonding layer should match well with that of each constraining layer.