4014 Damping Aluminium Foil Sheets are designed for damping resonant vibrations in thin sheet metal, resulting in attenuated resonant amplitudes and consequent noise reduction.

4014 is a polyurethane foam with an aluminium constraining layer on one side and a pressure sensitive on the other side to facilitate attachment to the surface of the vibrating panel.

The adhesive is protected by an easy release paper liner.

Strain energy from the panel is introduced into the viscoelastic foam.

The strain in the foam is in shear results in mechanical energy being dissipated to negligible heat.

This energy dissipation results in attenuated amplitudes of vibration when systems are being continuously excited at frequencies which match their natural frequencies, or more rapid decay in systems that are freely oscillating at their natural frequencies as a result of a momentary excitation such as an impact.

Tape 4014 is frequently used to reduce sound vibration in aircraft galleys.