A Magnetostrictive Transducer Design

  • G. A. Steel
  • J. R. Oswin
Conference paper


A magnetostrictive sonar transducer operating at 1350 Hz is described. The device is a small double-ended piston containing three terfenoi rods in independent magnetic circuits. The paper presents detailed aspects of the design and a summary of test results. An important observation is the effect of heat on terfenoi, which causes changes in elastic modulus and hence resonant frequency. Experience with this device allows a course to be set for future studies, both into material properties and associated transducer designs.


Resonant Frequency Leakage Flux Rare Earth Material Power Handling Capability Transducer Design 
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  1. 12.1
    K.C.Pitman, A.Branwood, and A.R.Pierce, “Device Oriented Measurements of Terfenol Materials,” Proceedings of Second International Conference on Giant Magnetrostrictive and Amorphous Alloys for Sensors and Actuators. October 1988.Google Scholar
  2. 12.2
    Mu-metal Alloys Publication TP11–576, Telecon Metals Ltd, Crawley, Sussex.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1991

Authors and Affiliations

  • G. A. Steel
    • 1
  • J. R. Oswin
    • 1
  1. 1.British Aerospace (Dynamics) LtdFilton, BristolUK

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