Arbitrary strain and temperature distribution sensing using two FBG pairs

Hsu Chih Cheng, Yu-Lung Lo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We use two pairs of FBGs to perform simultaneous strain and temperature field measurements. The first pair of FBGs, comprising one uniform FBG and one chirped FBG, measures the strain and temperature fields, while the second pair of FBGs, also comprising one uniform FBG and one chirped FBG, measures the temperature field only. A genetic algorithm is applied to reconstruct the arbitrary strain and temperature distribution profiles simultaneously from the measured reflection intensity spectra of the four FBGs. Also, we include the reflection power attenuation factors into the genetic algorithm and make this approach more useful in practical. Several strain distributions along the fiber Bragg gratings are reconstructed numerically. The proposed measurement method is suitable for many smart structure-monitoring applications.

Original languageEnglish
Title of host publicationProceedings of the SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007
Pages1685-1694
Number of pages10
Publication statusPublished - 2007 Nov 19
EventSEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007 - Springfield, MA, United States
Duration: 2007 Jun 32007 Jun 6

Publication series

NameProceedings of the SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007
Volume3

Other

OtherSEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007
CountryUnited States
CitySpringfield, MA
Period07-06-0307-06-06

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All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

Cheng, H. C., & Lo, Y-L. (2007). Arbitrary strain and temperature distribution sensing using two FBG pairs. In Proceedings of the SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007 (pp. 1685-1694). (Proceedings of the SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007; Vol. 3).