Structure of giant magnetostrictive ultrasonic transducer

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (11) : 196-201.

LI Pengyang, LIU Qiang, LI Wei, ZHOU Xuan, WANG Limeng, WANG Quandai, YUAN Qilong

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Abstract

Here, in order to realize high-power and large amplitude ultrasonic vibration output, a new type of giant magneto-strictive ultrasonic transducer was designed.The shape of the transducer was a window structure.The dynamic analysis of the designed giant magneto-strictive transducer was performed with the finite element software ANSYS to verify the effectiveness of the design method.The software ansoft Maxwell was used to do magnetic analysis for window transducer and bar transducer, respectively.It was found that the magnetic circuit of window transducer is a closed one with less magnetic leakage.The impedance and amplitude of window transducer and bar transducer were measured, respectively.The results showed that resonant frequencies of the two transducers are basically the same, and the impedance of window transducer is much smaller than that of bar transducer; under the same driving voltage, the average amplitude of window transducer is about 1.5 times of that of bar transducer; window transducer has advantages of small impedance, compact structure and large output amplitude, it is a new development direction of giant magneto-strictive transducer in future.

Key words

giant magneto-strictive materials / ultrasonic transducer / window transducer / simulation analysis

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LI Pengyang, LIU Qiang, LI Wei, ZHOU Xuan, WANG Limeng, WANG Quandai, YUAN Qilong. Structure of giant magnetostrictive ultrasonic transducer[J]. Journal of Vibration and Shock, 2021, 40(11): 196-201

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