Experimental Identification of Material Properties of Piezoelectric Patch Transducer

Zuzana Lašová; Robert Zemcik

doi:10.4028/www.scientific.net/AMM.486.205

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 486Experimental Identification of Material Properties...

Experimental Identification of Material Properties of Piezoelectric Patch Transducer

Abstract:

This work is focused on identification of material properties of piezoelectric patch transducers used e.g. for structural health monitoring before attaching to the substrate structure. Two experimental methods were concerned. At first two piezoelectric patches were supplied with a pair of collocated strain gauge rosettes. Both transducers were actuated with the same periodical signal. Significant difference in the results for two transducers was found, however it was claimed to be within tolerance by the producer. As an alternative method a measurement in an optical microscope was chosen. The patch was clamped at one side and actuated by a voltage signal. The displacement of the free end was captured by the microscope and processed in a graphical editor. Finally, a finite element model of the transducer was created and its material data were obtained by calibration with experimental data.

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Periodical:

Applied Mechanics and Materials (Volume 486)

Pages:

205-210

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.486.205

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Online since:

December 2013

Authors:

Zuzana Lašová*, Robert Zemcik

Keywords:

Optical Microscopy, Piezoelectric Materials, Smart Materials, Strain Gauges

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