3M 4014 Damping Aluminum Foam Sheet

3M™ Damping Aluminum Foam Sheet 4014 is an open-cell polyurethane foam with an aluminum constraining layer on one side and a pressure sensitive adhesive on the opposite side to facilitate attachment to the surface of the vibrating panel. The adhesive is protected by an easy-release liner.

How it works: Strain energy from the vibrating panel is introduced into the viscoelastic foam. The strain in the foam is in shear as a result of the aluminum constraining layer. The viscous portion of the response of viscoelastic foam results in mechanical energy being dissipated to negligible heat. This energy dissipation results in (1) attenuated amplitudes of vibration when systems are being continuously excited at frequencies which match their natural frequencies, or (2) more rapid decay in systems that are freely oscillating at their natural frequencies as a result of a momentary excitation such as an impact.

Applications: Reduce resonant noise, vibration and fatigue in metal, plastic panels and support structures, almost anywhere plastic or metal contact with materials that can result in potentially damaging vibration