期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：300
期号：2
页码：1-6
DOI：10.1088/1755-1315/300/2/022001
出版社：IOP Publishing
摘要：The erbium-dysprosium-iron magnetostrictive alloy is used as the acoustic generator of ultrasonic detection transducer. According to the characteristics of the magnetostrictive alloy, the alternating magnetic field is generated by the altering current of the coil around the magnetostrictive rod the circuit system. As the magnetic field changes, the magnetostrictive rod will produce stretching deformation along the axial direction, which drive the radiation plate vibrate and generate ultrasonic wave. The TbDy-Fe detection transducer has the advantages of simple structure, fast response and large output power so that can be used in various field of industrial detection.
