Localized Strain Measurements Using an Integration Method to Process Intensity Reflection Spectra from a Chirped FBG

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Nand, Anbhawa, Kitcher, Daniel J, Wade, Scott A, Jones, Rhys, Baxter, Gregory W and Collins, Stephen F (2007) Localized Strain Measurements Using an Integration Method to Process Intensity Reflection Spectra from a Chirped FBG. In: 3rd European Workshop on Optical Fibre Sensors ( Proceedings SPIE Vol. 6619). SPIE Digital Library, pp. 661911-1.

Abstract

A chirped fiber Bragg grating was used to measure the non-uniform strain profile of a notched aluminum specimen usedto simulate a cracked structure. The specimen was subjected to tensile tests that produced regions of non-uniform strainnear the notches. Analysis of power reflectance spectra from the grating, through the use of an integration method,enabled the strain profile near the notches to be determined. Unlike other intragrating sensing methods, this method didnot require a disturbance hypothesis to be postulated. The strain profile results from this intragrating sensor were inreasonable agreement with predictions from modeling conducted using the finite element method.

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Item type Book Section
URI https://vuir.vu.edu.au/id/eprint/2075
DOI https://doi.org/10.1117/12.738392
Official URL http://dx.doi.org/10.1117/12.738392
ISBN 9780819467614
Subjects Historical > FOR Classification > 0907 Environmental Engineering
Historical > Faculty/School/Research Centre/Department > Centre for Telecommunications and Micro-Electronics (CTME)
Historical > SEO Classification > 8615 Instrumentation
Keywords ResPubID: 14119, Intragrating sensing, chirped fiber, Bragg grating, strain measurement
Citations in Scopus 5 - View on Scopus
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