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

Nand, Anbhawa and Kitcher, Daniel J and Wade, Scott A and Jones, Rhys and 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.

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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.

Item Type: Book Section
ISBN: 9780819467614
Uncontrolled Keywords: ResPubID: 14119, Intragrating sensing, chirped fiber, Bragg grating, strain measurement
Subjects: FOR Classification > 0907 Environmental Engineering
Faculty/School/Research Centre/Department > Centre for Telecommunications and Micro-Electronics (CTME)
SEO Classification > 8615 Instrumentation
Depositing User: VUIR
Date Deposited: 13 Jan 2010 04:37
Last Modified: 24 Oct 2017 06:27
URI: http://vuir.vu.edu.au/id/eprint/2075
DOI: 10.1117/12.738392
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Citations in Scopus: 2 - View on Scopus

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