TY  - JOUR
U1  - Wissenschaftlicher Artikel
A1  - Wellendorf, Axel
A1  - von Damnitz, Lukas
A1  - Nuri, Abdul Wahab
A1  - Anders, Denis
A1  - Trampnau, Sebastian
T1  - Determination of the Temperature-Dependent Resonance Behavior of Ultrasonic Transducers Using the Finite-Element Method
JF  - Journal of Vibration Engineering & Technologies
N2  - Purpose Langevin transducers are ultrasonic transducers that convert electrical into mechanical energy through the piezoelectric effect. This class of transducers achieves the highest efficiency in their mechanical resonance. Studies have shown that the resonant frequency changes with temperature. The aim of this contribution is to reproduce this temperature-dependence resonance frequency as accurately as possible with FEM simulations. Methods Therefore, the temperature-dependent resonance behavior of Langevin transducers is examined experimentally. A FEM model is created on the basis of temperature-dependent measured material coefficients. Using parameter correlations and optimization algorithms, the FEM model is fitted and validated by experimental results. Six variants of Langevin transducers are examined in the range from 30 °C to 80 °C with resonance frequencies between 34 and 38 kHz. They differ in three geometries and two materials. Results The experimental results show that the resonance frequencies decrease with increasing temperatures by 5.0–19.4 Hz/°C, depending on the material and geometry. As decisive parameters for the model fitting of the FEM results, three function-dependent stiffness coefficients of the piezoelectric material PZT8 and the Young’s moduli of the metallic materials are determined by parameter correlation. Conclusion Through the targeted fitting of these function-dependent parameters, the calculation of the resonance frequencies of Langevin transducers can be qualitatively and quantitatively improved, independent of shape and material.
KW  - Temperatur
KW  - Ultrasonic
KW  - Piezoelectric
KW  - Finite-element method
KW  - Langevin transducer
KW  - Temperature
KW  - Model fit
KW  - Engineering
Y1  - 2023
UN  - https://nbn-resolving.org/urn:nbn:de:hbz:832-epub4-27671
SN  - 2523-3920
SS  - 2523-3920
SN  - 2523-3939
SS  - 2523-3939
U6  - https://doi.org/10.1007/s42417-023-00906-8
DO  - https://doi.org/10.1007/s42417-023-00906-8
VL  - 12
IS  - 2
SP  - 1277
EP  - 1290
S1  - 14
PB  - Springer Nature Singapore
ER  -