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Shock and Vibration
Volume 2015 (2015), Article ID 478045, 9 pages
Research Article

Investigation of Effect on Vibrational Behavior of Giant Magnetostrictive Transducers

1Faculty of Engineering, Tarbiat Modares University, Jalale-Ale-Ahmad Highway, P.O. Box 14115/143, Tehran, Iran
2College of Engineering, Sultan Qaboos University, P.O. Box 33, Al-Khod, 123 Muscat, Oman
3Department of Mechanics, Politecnico di Milano, Via La Masa 1, 20156 Milano, Italy

Received 19 November 2014; Accepted 26 January 2015

Academic Editor: Alicia Gonzalez-Buelga

Copyright © 2015 M. Sheykholeslami et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Resonant magnetostrictive transducers are used for generating vibrations in the sonic and ultrasonic range of frequency. As the mechanical properties of magnetostrictive materials change according to different operating conditions (i.e., temperature, mechanical prestress, and magnetic bias), the vibrational behavior of the transducer changes too. effect is the change in the Young modulus of the ferromagnetic material and it has to be considered as it leads to changes in the dynamics of the transducer. This paper deals with the study of such effect from both theoretical and experimental point of view. effect on behavior of the transducer based on Terfenol-D is analytically described as a function of different operating conditions focusing on effects on resonance frequency, mode shape, and moreover experimentally the quality factor. Results of resonance frequency prediction have been validated with experiments and good agreement has been seen.