Piezoelectric Ceramic Chip for Ultrasonic transducer flow sensor
Material of Piezoelectric Ceramic Chip for Ultrasonic transducer flow sensor
Piezoelectric ceramics often involve the following five basic electromechanical coupling factors:
The planar electromechanical coupling coefficient KP is a parameter which reflects the polarization and electric excitation along the thickness direction of the thin disk and acts as the electric coupling effect when the radial stretching vibration occurs.
Transverse electromechanical coupling coefficient K31: a parameter reflecting the electromechanical coupling effect of the slender strip in the direction of thickness polarization and electrical excitation for length stretching vibration.
Longitudinal electromechanical coupling coefficient K33: a parameter reflecting the electromechanical coupling effect of the slender rod polarized and excited along the length direction.
The electromechanical coupling coefficient KT of thickness stretching is a parameter that reflects the electromechanical effect of polarization and excitation along the thickness direction of the thin sheet.
Thickness shear electromechanical coupling coefficient K15: reflects the rectangular plate polarization along the length direction, the direction of the exciting electric field is perpendicular to the polarization direction, for thickness shear vibration of the electrical coupling effect parameters.