TY JOUR TI Investigating constant determination techniques of polarized piezoceramics KW piezoelectric ceramics KW constant determination KW resonance-antiresonance technique KW losses KW finite-element method KW ANSYS program KW perturbation method. JO Vestnik of Don State Technical University AU Madorskiy, V.. AU Mitko, V.. PY 2014 IS 14 PB Don state technical University