Rare earth ultrasonic transducer technique research.

Transducer is the necessary and most important part in the maxonics. New applications demand for new transducer, and the renovation of the transducer will open a new field for the application of the maxonics. The important method to develop new transducer is to find and develop new material. The rare earth giant magnetostrictive material Terfenol-D is a new functional material with good performance. In this paper, the rare earth ultrasonic transducer was analyzed theoretically and devised in four-port method and FEM software ANSYS. A rare earth ultrasonic transducer and the transducer with the half wave horn are developed, whose performance has shown unique advantage compared with the piezoelectric transducer.