Localized strain measurements using an integration method to process intensity reflection spectra from a chirped FBG

A. Nand; D. J. Kitcher; S. A. Wade; R. Jones; G. W. Baxter; S. F. Collins

doi:10.1117/12.738392

Localized strain measurements using an integration method to process intensity reflection spectra from a chirped FBG

A. Nand, D. J. Kitcher, S. A. Wade, R. Jones, G. W. Baxter, S. F. Collins

Mechanical & Aerospace Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

5 Citations (Scopus)

Abstract

A chirped fiber Bragg grating was used to measure the non-uniform strain profile of a notched aluminum specimen used to simulate a cracked structure. The specimen was subjected to tensile tests that produced regions of non-uniform strain near 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 did not require a disturbance hypothesis to be postulated. The strain profile results from this intragrating sensor were in reasonable agreement with predictions from modeling conducted using the finite element method.

Original language	English
Title of host publication	EWOFS 2007 Proceedings
Subtitle of host publication	Third European Workshop on Optical Fibre Sensors
DOIs	https://doi.org/10.1117/12.738392
Publication status	Published - 4 Dec 2007
Event	European Workshop on Optical Fibre Sensors 2007 - Napoli, Italy Duration: 4 Jul 2007 → 6 Jul 2007 Conference number: 3rd https://www.spiedigitallibrary.org/conference-proceedings-of-spie/6619.toc (Proceedings)

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	6619
ISSN (Print)	0277-786X

Conference

Conference	European Workshop on Optical Fibre Sensors 2007
Abbreviated title	EWOFS 2007
Country/Territory	Italy
City	Napoli
Period	4/07/07 → 6/07/07
Internet address	https://www.spiedigitallibrary.org/conference-proceedings-of-spie/6619.toc (Proceedings)

Keywords

Chirped fiber Bragg grating
Intragrating sensing
Strain measurement

Access to Document

10.1117/12.738392

Cite this

Nand, A., Kitcher, D. J., Wade, S. A., Jones, R., Baxter, G. W., & Collins, S. F. (2007). Localized strain measurements using an integration method to process intensity reflection spectra from a chirped FBG. In EWOFS 2007 Proceedings: Third European Workshop on Optical Fibre Sensors [661911] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6619). https://doi.org/10.1117/12.738392

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title = "Localized strain measurements using an integration method to process intensity reflection spectra from a chirped FBG",

abstract = "A chirped fiber Bragg grating was used to measure the non-uniform strain profile of a notched aluminum specimen used to simulate a cracked structure. The specimen was subjected to tensile tests that produced regions of non-uniform strain near 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 did not require a disturbance hypothesis to be postulated. The strain profile results from this intragrating sensor were in reasonable agreement with predictions from modeling conducted using the finite element method.",

keywords = "Chirped fiber Bragg grating, Intragrating sensing, Strain measurement",

author = "A. Nand and Kitcher, {D. J.} and Wade, {S. A.} and R. Jones and Baxter, {G. W.} and Collins, {S. F.}",

year = "2007",

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note = "European Workshop on Optical Fibre Sensors 2007, EWOFS 2007 ; Conference date: 04-07-2007 Through 06-07-2007",

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Nand, A, Kitcher, DJ, Wade, SA, Jones, R, Baxter, GW & Collins, SF 2007, Localized strain measurements using an integration method to process intensity reflection spectra from a chirped FBG. in EWOFS 2007 Proceedings: Third European Workshop on Optical Fibre Sensors., 661911, Proceedings of SPIE - The International Society for Optical Engineering, vol. 6619, European Workshop on Optical Fibre Sensors 2007, Napoli, Italy, 4/07/07. https://doi.org/10.1117/12.738392

Localized strain measurements using an integration method to process intensity reflection spectra from a chirped FBG. / Nand, A.; Kitcher, D. J.; Wade, S. A.; Jones, R.; Baxter, G. W.; Collins, S. F.

EWOFS 2007 Proceedings: Third European Workshop on Optical Fibre Sensors. 2007. 661911 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6619).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

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T1 - Localized strain measurements using an integration method to process intensity reflection spectra from a chirped FBG

AU - Nand, A.

AU - Kitcher, D. J.

AU - Wade, S. A.

AU - Jones, R.

AU - Baxter, G. W.

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N2 - A chirped fiber Bragg grating was used to measure the non-uniform strain profile of a notched aluminum specimen used to simulate a cracked structure. The specimen was subjected to tensile tests that produced regions of non-uniform strain near 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 did not require a disturbance hypothesis to be postulated. The strain profile results from this intragrating sensor were in reasonable agreement with predictions from modeling conducted using the finite element method.

AB - A chirped fiber Bragg grating was used to measure the non-uniform strain profile of a notched aluminum specimen used to simulate a cracked structure. The specimen was subjected to tensile tests that produced regions of non-uniform strain near 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 did not require a disturbance hypothesis to be postulated. The strain profile results from this intragrating sensor were in reasonable agreement with predictions from modeling conducted using the finite element method.

KW - Chirped fiber Bragg grating

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Nand A, Kitcher DJ, Wade SA, Jones R, Baxter GW, Collins SF. Localized strain measurements using an integration method to process intensity reflection spectra from a chirped FBG. In EWOFS 2007 Proceedings: Third European Workshop on Optical Fibre Sensors. 2007. 661911. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.738392

Localized strain measurements using an integration method to process intensity reflection spectra from a chirped FBG

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