Identification of material tensors for piezoceramic materials

A new iterative scheme for the exact reconstruction of piezoelectric material parameters from electric impedance measurements is proposed. It is based on finite element simulations of the full piezoelectric equations, combined with a Newton-conjugate gradient inversion scheme. Experiments for a thickness resonator demonstrate that this method is able to avoid (undesirable) inaccuracies occurring in conventional simplified model parameter estimation techniques.