Inverse piezoelectric material parameter characterization using a single disc-shaped specimen Feldmann, Nadine Schulze, Veronika Claes, Leander Jurgelucks, Benjamin Walther, Andrea Henning, Bernd The increasingly simulation-driven design process of ultrasonic transducers requires several reliable parameters for the description of the material behaviour. Exact results can only be achieved when a single specimen is used in the identification process, which typically is prone to the problem of low sensitivities to certain material parameters and thus high uncertainties. Therefore, a custom electrode topology for increased sensitivity is proposed for a piezoceramic disc. The thereupon conducted measurements of the electric impedance can be used as a starting point for an inverse approach where an equivalent simulation model is used to identify fitting material parameters. An optimisation strategy based on a preliminary sensitivity analysis is presented that leads to a good agreement between measurement and simulation. Furthermore, the proposed measurement procedure is able to evaluate the quality of the simulation model. Hence, different frequency-dependent damping models are presented and evaluated. 2020 info:eu-repo/semantics/article doc-type:article text http://purl.org/coar/resource_type/c_6501 https://ris.uni-paderborn.de/record/19313 Feldmann N, Schulze V, Claes L, Jurgelucks B, Walther A, Henning B. Inverse piezoelectric material parameter characterization using a single disc-shaped specimen. <i>tm - Technisches Messen</i>. Published online 2020:50-55. doi:<a href="https://doi.org/10.1515/teme-2020-0012">10.1515/teme-2020-0012</a> eng info:eu-repo/semantics/altIdentifier/doi/10.1515/teme-2020-0012 info:eu-repo/semantics/altIdentifier/issn/2196-7113 info:eu-repo/semantics/altIdentifier/issn/0171-8096 info:eu-repo/semantics/closedAccess