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In situ health monitoring of piezoelectric sensorsAn in situ health monitoring apparatus may include an exciter circuit that applies a pulse to a piezoelectric transducer and a data processing system that determines the piezoelectric transducer's dynamic response to the first pulse. The dynamic response can be used to evaluate the operating range, health, and as-mounted resonance frequency of the transducer, as well as the strength of a coupling between the transducer and a structure and the health of the structure.
Document ID
20130013492
Acquisition Source
Headquarters
Document Type
Other - Patent
Authors
Jensen, Scott L.
Drouant, George J.
Date Acquired
August 27, 2013
Publication Date
March 19, 2013
Subject Category
Electronics And Electrical Engineering
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-8,401,820
Patent Application
US-Patent-Appl-SN-12/566,111

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