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US 5,969,251 AGranted
Methods for determining damping characteristics
AssigneeUnisys Corporation
InventorMichael N. Tranquilla
Life of this patent
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Abstract
A method of determining damping coefficients for a resilient web, involving: stretching a prescribed length of the web between a pair of pulleys mounted on a frame; attaching a prescribed test mass M.sub.0 upon this length at a prescribed distance L.sub.1 from one pulley; shaking the frame at resonance frequency f.sub.R, and the while deriving resonance-amplitude; and using the foregoing to determine web damping coefficients.
Claims12
A method of determining damping coefficients for a web comprising:
- stretching said web with at least one pulley mounted on test apparatus;
- attaching a prescribed test mass M on said web at a prescribed distance L.sub.1 from one said pulley;
- shaking said apparatus controllably at resonance frequency, while deriving resonance-amplitude at several different values of said distance and using the foregoing to determine damping coefficients.
A method of determining damping coefficients for a resilient web, involving:
- stretching a prescribed length of the web between a pair of pulleys mounted on a frame;
- attaching a prescribed test mass M.sub.0 upon said length at a prescribed distance L.sub.1 from one pulley;
- shaking the frame at resonance frequency f.sub.R, and meanwhile deriving resonance-amplitude;
- and using the foregoing to determine web damping coefficients.
1 more element
Dependencies are inferred from the claim text.