Piezoelectric material characterization by acoustic methods

Two characterization methods of piezoelectric materials
based on acoustic measurements are presented. Their main objective is to
identify the entire set of electromechanical properties of piezoelectric
materials from a single sample. In order to characterize new materials like
single-crystals with small dimensions, the first section of the paper presents
an identiffication protocol based on the study of the resonance spectra of
parallelepipeds. The second characterization method is performed by means of the
measurement of the transmission coefficients of plane waves propagating through
an immersed plate. It is is suitable for the determination of the properties of
bulk piezoelectric ceramics.