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US 5,256,223 AGranted
Fiber enhancement of viscoelastic damping polymers
AssigneeCenter for Innovative Technology
InventorsThomas E. Alberts, Yung Chen
Life of this patent
Estimating the term…
Abstract
A Viscoelastic medium with fibers dispersed throughout eliminates the need for a constraining layer, thus reducing the size and weight of a damping treatment.
Claims10
An apparatus for damping structural noise and vibration, consisting essentially of:
- a viscoelastic polymer having length, width and height dimensions defining a volume and having at least one surface securable to a structure;
- and
- a plurality of non-woven, spaced apart fibers uniformly distributed in-situ throughout said volume defined by said viscoelastic polymer with respect to said height dimension, said fibers being sized to induce strain in said viscoelastic polymer, said fibers being of a length which requires several of said fibers to span said length dimension of said viscoelastic polymer.
A method of damping structural noise and vibration, comprising the steps of:
- determining a fiber length for a damping tape which is comprised of a viscoelastic polymer with a plurality of spaced apart fibers uniformly distributed throughout said viscoelastic polymer which will provide a desired damping response for a particular frequency of vibration;
- and
- applying said damping tape having said fiber length determined to produce said desired damping response to a structure.
A method of damping structural noise and vibration, comprising the steps of:
- determining a fiber spacing for a damping tape which is comprised of a vescoelastic polymer with a plurality of spaced apart fibers uniformly distributed throughout said viscoelastic polymer which will provide a desired damping response for a particular frequency of vibration;
- and
- applying said damping tape having said fiber spacing determined to produce said desired damping response to a structure.
A method of damping structural noise and vibration, comprising the steps of:
- determining a volume fraction of fibers for a damping tape which is comprised of a viscoelastic polymer with a plurality of spaced apart fibers uniformly distributed throughout said viscoelastic polymer which will provide a desired damping response for a particular frequency of vibration;
- and
- applying said damping tape having said volume fraction of fibers determined to produce said desired damping response to a structure.
Dependencies are inferred from the claim text.