title: Improved calculations of the electromechanical properties of tangentially poled stripe-electroded piezoelectric bars and cylinders with nonuniform electric fields.
abstract: Tangentially polarized stripe-electroded piezoelectric elements are often used to achieve the longitudinal piezoelectric effect without using segmented parts bonded together, however the electromechanical properties are not fully realized due to the nonuniform electric field and polarization in the element. The effective electromechanical coupling coefficient k(3'3eff), piezoelectric modulus d(3'3eff), elastic constant s(3'3eff)(E), and relative dielectric constant ε(3'3eff)(T) (where the prime denotes the nonuniform polarization) for tangentially polarized stripe-electroded bars and hollow cylinders are calculated using the energy method for the nonuniform electric field. A finite difference method is used to analyze the electric field under the assumption that the piezoelement is fully polarized. Results are compared with a piecewise linear field model and experimental results on representative piezoelements.
authors.affiliation: Advanced Technology & Manufacturing Center, Department of Electrical and Computer Engineering, University of Massachusetts Dartmouth, 151 Martine Street, Fall River, Massachusetts 02723, USA.
authors.forename: Sairajan
authors.initials: S
authors.lastname: Sarangapani
authors.forename: David A
authors.initials: DA
authors.lastname: Brown
mesh_terms: D055119:Elastic Modulus; D004560:Electricity; D004581:Electronics / Q000295:instrumentation*; D004867:Equipment Design; D016014:Linear Models; D008962:Models, Theoretical; D015203:Reproducibility of Results; D014159:Transducers; D014732:Vibration