Self-heating phenomenon of piezoelectric elements excited by a tone-burst electric field

Haoran Shi, Zhaojiang Chen, Xi Chen, Shiqing Liu, Wenwu Cao

Research output: Contribution to journalArticlepeer-review

Abstract

Tone-burst excitation is often used for ultrasonic transducers of specific operation modes or for overcoming transducer overheating problems associated with continuous wave (CW) excitation. In this study, a theoretical model for the self-heating phenomenon of a piezoelectric disc element is established to estimate the temperature rise induced by a tone-burst electric field. An analytical solution for the temperature rise of the piezoelectric element is obtained by using Laplace transform method. Numerical simulations and experimental measurements are performed to investigate the influence of different excitation parameters on the temperature rise. By comparing the experimental results with the simulation results, the temperature-rise difference between tone-burst and CW excitations is quantified, and the validity of the theoretical model is verified. Furthermore, a multiparameter estimation method is proposed for the heat convection coefficient and dielectric properties under high-field operating conditions. These results are useful in both optimization of heat dissipation performance and characterization of high-power ultrasonic transducers.

Original languageEnglish (US)
Article number106562
JournalUltrasonics
Volume117
DOIs
StatePublished - Dec 2021

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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