22 August 2014 Determination of Terfenol-D magnetostriction characteristics for sensor application using fiber Bragg grating
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Proceedings Volume 9286, Second International Conference on Applications of Optics and Photonics; 92863X (2014) https://doi.org/10.1117/12.2063445
Event: Second International Conference on Applications of Optics and Photonics, 2014, Aveiro, Portugal
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.
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Kleiton de Morais Sousa, Kleiton de Morais Sousa, Ricardo Zandonay, Ricardo Zandonay, Erlon Vagner da Silva, Erlon Vagner da Silva, Cicero Martelli, Cicero Martelli, Jean Carlos Cardozo da Silva, Jean Carlos Cardozo da Silva, } "Determination of Terfenol-D magnetostriction characteristics for sensor application using fiber Bragg grating", Proc. SPIE 9286, Second International Conference on Applications of Optics and Photonics, 92863X (22 August 2014); doi: 10.1117/12.2063445; https://doi.org/10.1117/12.2063445
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