Internally damped rotatable storage article
AssigneeMinnesota Mining and Manufacturing Company
InventorsDonald T. Landin, Jeffrey W. McCutcheon
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Abstract
The present invention provides a method for internally damping a rotatable storage article which is subject to resonant vibrations. More specifically, the present invention provides a method of improving the damping properties of a rotatable storage article by introducing a viscoelastic material as an inner layer(s) of the rotatable storage article. The invention also provides the damped rotatable storage articles themselves.
Claims33
An internally damped rotatable storage article having at least one layer of vibration damping material contained therein, comprising a viscoelastic material, said vibration damping material having a loss factor of at least about 0.01 and a storage modulus of at least about 6.9.times.10.sup.3 Pascals, wherein the thickness of each of said layer(s) ranges from about 0.002 mm to about 0.5 mm, and wherein the vibration damping is improved by at least about 10% in at least 1 vibrational mode.
A method of improving the viscoelastic damping characteristics of a rotatable storage article comprising providing at least one layer of vibration damping material within the rotatable storage article, each vibration damping material layer comprising a viscoelastic material, said vibration damping material having a loss factor of at least about 0.01 and a storage modulus of at least about 6.9.times.10.sup.3 Pascals, wherein the thickness of each of said layer(s) ranges from about 0.002 mm to about 0.5 mm, and wherein the vibration damping is improved by at least about 10% in at least 1 vibrational mode.
Dependencies are inferred from the claim text.