Article ID Journal Published Year Pages File Type
1477570 Journal of the European Ceramic Society 2008 6 Pages PDF
Abstract

An iterative method for characterization of piezoelectric ceramics of a disk in radial vibrational mode has been developed. The complex materials constants (dielectric constants, elastic compliance coefficients and piezoelectric constants) of piezoelectric ceramics with various mechanical quality factor (Q  ) were accurately determined. An explicit procedure for estimating the appropriate initial values of the complex materials constants for a nonlinear iteration process has been presented. The present nonlinear iterative fitting procedure was carried out for the experimental admittance spectra Y=G+jBY=G+jB for various specimens with moderate (667) or low (29) Q values and the validity of the method was verified.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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