Active-passive hybrid constrained layer for structural damping augmentation

摘要

The invention is a method and apparatus for surface damping augmentation. The apparatus of the present invention includes a viscoelastic material, a hybrid constraining layer mechanically connected to the viscoelastic material and having an active material and a passive material, and the active material mechanically connected to the passive material. The method provides for selecting an active constraining material, selecting a passive constraining material, forming a hybrid constraining layer from the active constraining material and the passive constraining material, and mechanically connecting the hybrid constraining layer to a viscoelastic material.