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Proceedings Paper

Determination of Terfenol-D magnetostriction characteristics for sensor application using fiber Bragg grating
Author(s): Kleiton de Morais Sousa; Ricardo Zandonay; Erlon Vagner da Silva; Cicero Martelli; Jean Carlos Cardozo da Silva
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Paper Abstract

Electric current sensor based on magnetostriction phenomenon has been reported in several papers. In common these previous papers used a fiber Bragg grating (FBG) to determine the strain of the magnetostrictive material. However, magnetostriction sensors present few disadvantages often neglected, such as the temperature dependence of magnetostriction. In this paper a Terfenol-D rod (a giant magnetostrictive material-GMM) is used for tests. For simultaneous measurement of temperature and strain two multiplexed FBGs are used. The first test presents unipolar characteristics of Terfenol-D magnetostriction. Other test determines the Terfenol-D response for different temperatures. The Terfenol-D sensitivity increase when the temperature increases, however the saturation of the material occurs in small field values. The characteristics presented in this paper must be taken into account in the development of magnetostrictive sensors and its limitations.

Paper Details

Date Published: 22 August 2014
PDF: 4 pages
Proc. SPIE 9286, Second International Conference on Applications of Optics and Photonics, 92863X (22 August 2014);
Show Author Affiliations
Kleiton de Morais Sousa, Univ. Tecnológica Federal do Paraná (Brazil)
Ricardo Zandonay, CPqD - Ctr. de Pesquisa e Desenvolvimento em Telecomunicações (Brazil)
Erlon Vagner da Silva, Tractebel Energia (Brazil)
Cicero Martelli, Univ. Tecnológica Federal do Paraná (Brazil)
Jean Carlos Cardozo da Silva, Univ. Tecnológica Federal do Paraná (Brazil)

Published in SPIE Proceedings Vol. 9286:
Second International Conference on Applications of Optics and Photonics
Manuel Filipe P. C. Martins Costa; Rogério Nunes Nogueira, Editor(s)

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