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A system model is used, describing the voltage-to-voltage transfer functionfor an ultrasonic transmit-receive transducer pair based on simulations using afinite element model for piezoelectric transducers (FEMP). The piezoelectricceramic elements used in this work are cylindrical Pz27 disks vibratingradially in air at room temperature and 1 atm, over a frequency range up to 300kHz. Comparisons are made between measurements and simulations. Effects ofuncertainties in alignment are examined, together with comparisons with priorwork.

Characterization of ultrasound transmit-receive measurement systems in  air: Comparison with prior work on piezoelectric elements in radial mode  vibration