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Design parameter evaluation of a metal recoated Fiber Bragg Grating sensors for measurement of cryogenic temperature or stress in superconducting devices

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Title Design parameter evaluation of a metal recoated Fiber Bragg Grating sensors for measurement of cryogenic temperature or stress in superconducting devices
 
Creator RAJINIKUMAR, R
SUSSER, M
NARAYANKHEDKAR, KG
KRIEG, G
ATREY, MD
 
Subject temperature sensors
thermal stress
metal coatings
sensitivity
superconducting device
 
Description There are plenty of complex physical phenomena which remain to be studied and verified experimentally for building an optimized superconducting magnet. The main problem for experimental validations is due to the unavailability of suitable sensors. This paper proposes a Fiber Bragg Gratings (FBG) sensor for this purpose which allows access to the local temperature/stress state. To measure the low temperature (20 K), FBG can be recoated with materials having high thermal expansion coefficient (HTCE). This can induce a thermal stress for a temperature change, which in turn increases the sensitivity of the sensor. The performance of such sensors has been experimentally studied and reported in earlier paper [Rajinikumar R. Suesser M, Narayankhedkar KG, Krieg G, Atrey MD. Performance evaluation of metallic coated Fiber Bragg Grating sensors for sensing cryogenic temperature. Cryogenics 2008;48:142-7]. This paper aims at evaluation and determination of different design parameters like coating materials, coating thickness, grating period and the grating length for design of better performance FBG sensor for low temperature/stress measurements. (C) 2009
 
Publisher ELSEVIER SCI LTD
 
Date 2011-07-22T00:03:17Z
2011-12-26T12:52:13Z
2011-12-27T05:39:17Z
2011-07-22T00:03:17Z
2011-12-26T12:52:13Z
2011-12-27T05:39:17Z
2009
 
Type Article
 
Identifier CRYOGENICS, 49(5), 202-209
0011-2275
http://dx.doi.org/10.1016/j.cryogenics.2009.01.005
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6040
http://hdl.handle.net/10054/6040
 
Language en