title: FEM-Based determination of real and complex elastic, dielectric, and piezoelectric moduli in piezoceramic materials.
abstract: We propose an enhanced iterative scheme for the precise reconstruction of piezoelectric material parameters from electric impedance and mechanical displacement measurements. It is based on finite-element simulations of the full three-dimensional piezoelectric equations, combined with an inexact Newton or nonlinear Landweber iterative inversion scheme. We apply our method to two piezoelectric materials and test its performance. For the first material, the manufacturer provides a full data set; for the second one, no material data set is available. For both cases, our inverse scheme, using electric impedance measurements as input data, performs well.
authors.affiliation: Department of Sensor Technology, University of Erlangen-Nuremberg, Germany. tom.lahmer@lse.eei.uni-erlangen.de
authors.forename: Tom
authors.initials: T
authors.lastname: Lahmer
authors.forename: Manfred
authors.initials: M
authors.lastname: Kaltenbacher
authors.forename: Barbara
authors.initials: B
authors.lastname: Kaltenbacher
authors.forename: Reinhard
authors.initials: R
authors.lastname: Lerch
authors.forename: Erich
authors.initials: E
authors.lastname: Leder