期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 36, 期 2, 页码 176-180出版社
IOP Publishing Ltd
DOI: 10.1088/0022-3727/36/2/317
关键词
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An iterative, automated method for characterization of piezoelectric specimens of a rectangular bar in the longitudinal extensional mode has been developed. The complex materials constants (dielectric constants, elastic compliance coefficients and piezoelectric constants) of piezoelectric specimens with various Q were accurately determined. A new method to estimate the appropriate initial values of the complex materials constants for a nonlinear iteration process has been presented. This nonlinear iterative fitting procedure was carried out for the experimental admittance spectra Y = G + j B for various specimens with high (4600) or low (50) Q values and the validity of the method was verified.
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