A6.2 - Inverse Method for Determining Material Parameters of Piezoceramics and Passive Materials
- AMA Conferences 2015
2015-05-19 - 2015-05-21
- Proceedings SENSOR 2015
- A6 - Material Characterization
- M. Weiß, J. Ilg, S. Rupitsch, R. Lerch - Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen (Germany)
- 136 - 141
We present an Inverse Method for determining material parameters of piezoceramics as well as passive materials (e.g., metals, glasses, plastics, composites). The Inverse Method is based on the minimization of the deviation between measurements and simulation results by an optimization algorithm. In doing so, material parameters are identified via an iterative adjustment of the simulation parameters. Contrary to common characterization methods, the Inverse Method is qualified to identify all material parameters of piezoceramics (i.e., tensors of elasticity, permittivity and piezoelectric coupling) through measured electrical impedances of only two test samples. Furthermore, the Inverse Method is applied for determining frequency dependent material parameters (e.g., tensor of elasticity, damping factor) of passive materials by forced vibration testing. We show results for a characterized piezoelectric material and a passive material.