A18-a6 - Estimation of third order elastic constants of piezoceramics using DC biased impedance measurements
- Event
- 2025 ICU PADERBORN - 9th International Congress on Ultrasonics
2025-09-21 - 2025-09-25
Paderborn - Band
- Lectures
- Chapter
- A18-a - Nonlinear Properties of Piezoelectric Ceramics (FOR 5208)
- Author(s)
- L. Claes, J. Hölscher, O. Friesen, B. Henning, C. Scheidemann, T. Hemsel - Paderborn University, Paderborn (Germany)
- Pages
- 142 - 145
- DOI
- 10.5162/Ultrasonic2025/A18-a6
- ISBN
- 978-3-910600-08-9
- Price
- free
Abstract
Third order elastic constants of piezoceramics are estimated from electrical impedance measurements by leveraging the dependence of material parameters on a DC bias voltage induced constant mechanical strain. Linear (second order) piezoelectric material parameters are determined for the biased and non-biased sample by solving an inverse problem matching the frequency-dependent electrical impedance of the sample with the output of a simulation model. Estimates for third order elastic constants are derived from these results, enabling simulations with the estimated parameters and thus a comparison with observations.