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A lumped parameter equivalent circuit basis for calculating and allocating heat power sources in a transducer is presented along with experimental results. The simple model allows heat power calculations at resonance based on readily attainable parameters for transducers with uniform fields. Measured and finite element analysis of steady state thermal results are compared for the monopole mode of the single crystal driven modal transducer projector. The model serves as a physical and computational aid in the evaluation of piezoelectric transducer heating and may be used for evaluating highly coupled single crystal as well as ceramic piezoelectric transducers.


John L Butler, Alexander L Butler, Stephen C Butler. Thermal model for piezoelectric transducers (L). The Journal of the Acoustical Society of America. 2012 Oct;132(4):2161-4

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PMID: 23039410

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