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26 April 1996 Power limitations in acoustic transducer due to PZT material nonlinearities
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Abstract
The characterization work is an important step when studying a piezoelectric materials, it allows to link the mechanical characteristics to the electrical ones. Nevertheless for high excitation levels, significant changes in piezoelectric properties occur. They result in a performance limitations for high power transducers. A better understanding of this nonlinear behavior is needed to optimize heavy duty transducers. We chose to study a symmetrical Langevin transducer close to its resonance frequency, so under high stress and strain, and we elaborated a transducer model based on nonlinear piezoelectric constitutive equations. Simulation results fit nicely with experimental data. Moreover, introduction of nonlinear terms leads to a new explanation of the dissipated power in heavy duty transducers and correlation between model and experiments gives an estimation of the nonlinear parameters.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Nathalie Aurelle, Daniel Guyomar, and Lucien Eyraud "Power limitations in acoustic transducer due to PZT material nonlinearities", Proc. SPIE 2779, 3rd International Conference on Intelligent Materials and 3rd European Conference on Smart Structures and Materials, (26 April 1996); https://doi.org/10.1117/12.237184
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