Piezoelectric film transducer sytem for bearings

Details Piezoelectric film transducer sytem for bearings Piezoelectric film transducer sytem for bearings

1995-11-14

1997-10-14

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

73660, 340682, 340683, G01M 1304

Patent

active

056774885

ABSTRACT:
An in-use rolling element bearing monitoring system which uses a piezoelectric film transducer on either a bearing, bearing support structure, or on a separate washer in close proximity to a bearing for monitoring bearing performance. One embodiment provides a bearing monitoring system for detecting and predicting bearing failure. Another embodiment provides a system configured for detecting rotational speed of a rolling element bearing. Each embodiment of the invention entails maintaining a piezoelectric film transducer in contiguous pressure wave responsive communication with a bearing for detecting bearing performance, and provides the system in a compact configuration for in-use operation on a variety of machinery and vehicle components heretofore previously not compatible.

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Cohen et al., Piezoelectric Effect in Oriented Polyvinylchloride and Polyvinylfluroide, Jan. 1971.

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