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A calibration method of mechanical strains from a temperature-compensating FBG sensor

Authors
Choi, Nak-SamJung, Dal-Woo
Issue Date
May-2008
Publisher
World Scientific Publishing Co
Keywords
temperature-compensating double FBG sensor; mechanical strain; heating rate; strain retardation factor
Citation
Modern Physics Letters B, v.22, no.11, pp 1111 - 1115
Pages
5
Indexed
SCIE
SCOPUS
Journal Title
Modern Physics Letters B
Volume
22
Number
11
Start Page
1111
End Page
1115
URI
https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/42470
DOI
10.1142/S0217984908015929
ISSN
0217-9849
1793-6640
Abstract
The sensitivity of a temperature-compensating fiber Bragg grating (FBG) sensor which has different FBGs in one fiber line was analyzed for the real time measurement of mechanical normal strain in structures. Measurement of mechanical strains of the aluminum beam surface by the double FBG sensor was performed under various heating rates and temperature range. The results were compared with those of an electrical resistance strain gage. A considerable delay in the strain measurement by the double FBG sensor during the heating process was shown, which could be quantified for the strain compensation by the introduction of a strain retardation factor to the FBG sensor.
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COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF MECHANICAL ENGINEERING > 1. Journal Articles

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