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In this paper, each parameter affecting the performance of spherical ultrasonic transducer is simulated by a reasonable finite element model (FEM), and optimal design parameters are obtained for a 50MHz spherical ultrasonic transducer. Simulation results show that the ceramic thickness of spherical ultrasonic transducer is calculated to be 40.9um and the center frequency is 50MHz; The radius for spherical...
A cylindrical transducer based on PZT-5H/epoxy 2–2 piezoelectric composite with 40 elements is designed and fabricated in this paper. The prepared PZT-5H/epoxy 2–2 piezoelectric composite shows a single thickness mode, low acoustical impedance (25.8MRayls) and high electromechanical coupling coefficient (0.72). A pulse-echo method is utilized to test the performance of the cylindrical transducer....
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