Magnetic actuator based on giant magnetostrictive material Terfenol-D with strain and temperature monitoring using FBG optical sensor

被引：60

作者：

Garcia-Miquel, H. ^{[1
,2
]}

Barrera, D. ^{[1
]}

Amat, R. ^{[1
]}

Kurlyandskaya, G. V. ^{[3
,4
]}

Sales, S. ^{[1
]}

机构：

[1] Univ Politecn Valencia, ITEAM Res Inst, E-46022 Valencia, Spain

[2] Univ Politecn Valencia, Dept Elect Engn, E-46022 Valencia, Spain

[3] Univ Basque Country UPV EHU, Dept Elect & Elect, Bilbao 48080, Spain

[4] Ural Fed Univ, Ekaterinburg 620000, Russia

来源：

MEASUREMENT | 2016年 / 80卷

关键词：

Magneto optic sensors; Magnetic optic actuator; Magnetostriction; Fiber Bragg grating; Terfenol-D; Fiber optic; CURRENT TRANSDUCER; FIELD SENSOR;

D O I：

10.1016/j.measurement.2015.11.035

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have designed a temperature and strain monitoring system for a magnetic actuator based on the giant magnetostrictive material Terfenol-D (Tb0.3Dy0.7Fe1.92) with Fiber Bragg grating (FBG) sensors. Magneto-elastic properties of Terfenol-D depend on magnetization, stress pre-history, and temperature. In order to simultaneously monitor these effects, we have implemented a system based on a cylindrical Terfenol-D rod monitored with four FBGs that allows making the appropriate compensations on the strain measurement due to temperature drift. We have measured the magnetostriction in the axial and the transverse directions for the Terfenol-D rod with two perpendicular FBGs, and calculated the Poisson ratio. An additional mechanical system for strain amplification has been designed in order to increase sensitivity, by a factor of 4, in the strain measurement with the FBG sensor. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：201 / 206

页数：6

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