Piezoelectric Impedance Sensor-Based Structural Health Monitoring for Critical Members of Civil Infrastructures

Abstract:

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This paper presents novel structural health monitoring techniques for critical members of civil structures using electro-mechanical impedance sensors. The basic concept of this technique is to monitor critical locations of a structure for changes in structural impedance that would indicate imminent damage. In this paper, principal hardware and software issues on this topic are reviewed. An active sensing node incorporating on-board microprocessor and radio frequency telemetry is introduced in a sense of tailoring wireless sensing technology to the impedance method. A data compression algorithm using a principal component analysis is embedded into the on-board chip of the active sensing node. Finally, a method for compensating the temperature effects on the impedance measurements using cross-correlation analysis with effective frequency shifts is presented.

Info:

Periodical:

Edited by:

Pietro VINCENZINI and Fabio CASCIATI

Pages:

395-400

DOI:

10.4028/www.scientific.net/AST.56.395

Citation:

C. B. Yun and S. H. Park, "Piezoelectric Impedance Sensor-Based Structural Health Monitoring for Critical Members of Civil Infrastructures", Advances in Science and Technology, Vol. 56, pp. 395-400, 2008

Online since:

September 2008

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Price:

$35.00

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