Electrical admittance of piezoelectric parallelepipeds: application to tensorial characterization of piezoceramics

摘要: This work deals with the characterization of functional properties, including determination mechanical and electrical losses, piezoelectric materials using only one sample measurement. First, natural resonant frequencies a parallelepiped are calculated admittance is determined from calculations charge quantity on both electrodes parallelepiped. A first validation model performed comparison Mason's model. Results reported for PMN-34.5PT ceramic cube good agreement found between experimental measurements their modeling. The properties then extracted.