A18-a4 - Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed Langevin Transducer
- 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)
- O. Friesen, L. Claes, B. Henning, C. Scheidemann, T. Hemsel - Paderborn University, Paderborn (Germany)
- Pages
- 138 - 141
- DOI
- 10.5162/Ultrasonic2025/A18-a4
- ISBN
- 978-3-910600-08-9
- Price
- free
Abstract
In this study, the stress-dependency of piezoelectric material parameters is investigated. A finite element model is developed to analyse the electrical impedance response of a mechanically pre-stressed Langevin transducer. The experimental data indicate a single dominant resonance, which limits the estimation of piezoceramic material parameters under different mechanical stresses. In addressing this issue, a sensitivity analysis is employed to identify the parameters with the greatest influence on the resonance. Based on this, a subset of the stress-dependent material parameters of the piezoelectric components can be identified in an inverse procedure.