Characteristics Analysis And Optimum Design Of Rare Earth Giant Magnetostrictive Transducer

Rare earth giant magnetostrictive transducer is the ultrasonic generator for non-destructive testing. Its performance has important influence on the testing result.The vibration frequency and magnetic distribution of the transducer have been computed with the finite element method. The initial stress, electrical parameters and geometric dimensions have been optimized, which provides a theoretical guidance for the design of magnetostrictive transducer.Equivalent circuit method is a classical method used to calculate vertical vibration of piezoelectric transducer. Equivalent circuit method and Fourier Transform are used to calculate and analyze a GMM transducer in this research. On the basis of this research, a software package is developed for a GMM transducer design and optimization. After some structural and material parameters are inputted, characteristics of the transducer include data and curve will be given. A GMM transducer is optimized according to the software.A GMM transducer is developed is this research. The frequency response of the transducer and the real-time ultrasonic waveform of the transducer are measured. Compared with the experimental results, the calculated results are proved to be correct.