Arbitrary strain distribution measurement using a genetic algorithm approach and two fiber bragg grating intensity spectra

Hsu Chih Cheng, Yu-Lung Lo

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

This paper proposes and verifies a simple, convenient, and low cost method to inversely measure arbitrary strain distributions by applying a genetic algorithm approach to analyze the reflection intensity spectra of two fiber Bragg gratings (FBGs). The proposed method involves bonding one uniform FBG and one chirped FBG to the same location of the structure of interest such that they both encounter the same strain field. The arbitrary strain distribution within the fiber gratings is then determined inversely from the two Bragg intensity spectra by means of a genetic algorithm population-based optimization process. The proposed measurement method is suitable for many smart structure-monitoring applications.

Original languageEnglish
Pages (from-to)323-332
Number of pages10
JournalOptics Communications
Volume239
Issue number4-6
DOIs
Publication statusPublished - 2004 Sep 15

Fingerprint

strain distribution
Fiber Bragg gratings
genetic algorithms
Bragg gratings
Genetic algorithms
fibers
Intelligent structures
costs
smart structures
encounters
Fibers
Monitoring
gratings
optimization
Costs

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

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Arbitrary strain distribution measurement using a genetic algorithm approach and two fiber bragg grating intensity spectra. / Cheng, Hsu Chih; Lo, Yu-Lung.

In: Optics Communications, Vol. 239, No. 4-6, 15.09.2004, p. 323-332.

Research output: Contribution to journalArticle

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