The algorithm for experimental determination of physical and mechanical constants of piezoceramic materials

The final goal of mathematical modeling of physical condition of vibrating piezoelectric elements consists in qualitative and quantitative description of characteristics and parameters of existing electrical and elastic fields. It is evident that it is not possible to obtain meaningful and reliable quantitative estimates of physical condition parameters of piezoelectric (piezoceramic) elements without reliable data on the values of the materials of physical and mechanical constants. Noncontradictory algorithm for experimental determination of material constants of piezoelectric ceramics, which allows to obtain reliable values of at least three modules of elasticity, two elements of the matrix of piezoelectric coefficients and one element of the matrix of dielectric constants, is offered. For the first time in the practice of measurement of piezoceramic material constants the question of the determination of frequency dependence of energy losses level in a volume of oscillating piezoceramics is raised and resolved

thin disk, piezoelectric ceramics, electrical impedance, physical and mechanical constants