Next Article in Journal
A Novel Sensing Method and Sensing Algorithm Development for a Ubiquitous Network
Next Article in Special Issue
Integrated LTCC Pressure/Flow/Temperature Multisensor for Compressed Air Diagnostics
Previous Article in Journal
The Structure of Ca2+ Sensor Case16 Reveals the Mechanism of Reaction to Low Ca2+ Concentrations
Sensors 2010, 10(9), 8119-8128; doi:10.3390/s100908119
Article

A Magnetostrictive Composite-Fiber Bragg Grating Sensor

1
,
1,* , 1
,
2
 and
2
1 Department of Mechanical Engineering, Pontifical Catholic University of Rio de Janeiro, Rua Marquês de São Vicente 225, Gávea 22453-900, Rio de Janeiro, RJ, Brazil 2 Department of Physics, Pontifical Catholic University of Rio de Janeiro, Rua Marquês de São Vicente 225, Gávea 22453-900, Rio de Janeiro, RJ, Brazil
* Author to whom correspondence should be addressed.
Received: 10 July 2010 / Revised: 30 July 2010 / Accepted: 15 August 2010 / Published: 30 August 2010
(This article belongs to the Special Issue Advanced Embedded Sensors)
View Full-Text   |   Download PDF [805 KB, uploaded 21 June 2014]   |   Browse Figures
SciFeed

Abstract

This paper presents a light and compact optical fiber Bragg Grating sensor for DC and AC magnetic field measurements. The fiber is coated by a thick layer of a magnetostrictive composite consisting of particles of Terfenol-D dispersed in a polymeric matrix. Among the different compositions for the coating that were tested, the best magnetostrictive response was obtained using an epoxy resin as binder and a 30% volume fraction of Terfenol-D particles with sizes ranging from 212 to 300 µm. The effect of a compressive preload in the sensor was also investigated. The achieved resolution was 0.4 mT without a preload or 0.3 mT with a compressive pre-stress of 8.6 MPa. The sensor was tested at magnetic fields of up to 750 mT under static conditions. Dynamic measurements were conducted with a magnetic unbalanced four-pole rotor
Keywords: magnetic field sensor; fiber Bragg grating; magnetostrictive composite magnetic field sensor; fiber Bragg grating; magnetostrictive composite
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote |
RIS
MDPI and ACS Style

Quintero, S.M.M.; Braga, A.M.B.; Weber, H.I.; Bruno, A.C.; Araújo, J.F.D.F. A Magnetostrictive Composite-Fiber Bragg Grating Sensor. Sensors 2010, 10, 8119-8128.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert