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Miniature multiplexed fibre-grating-array sensor for the interrogation of localised strain patterns during crack growth studies upon hybrid laminate panels

Miniature multiplexed fibre-grating-array sensor for the interrogation of localised strain patterns during crack growth studies upon hybrid laminate panels
Miniature multiplexed fibre-grating-array sensor for the interrogation of localised strain patterns during crack growth studies upon hybrid laminate panels
As part of a project to optimise hybrid laminates for resistance to fatigue failure, arrays of fibre Bragg gratings are being used to monitor small-scale strain perturbations in composite materials. A remote multiplexed sensing system with 40 remote sensing sites using fibre optic technology, has been developed to monitor the strain field developed across the composite lamina of a hybrid laminate in the vicinity of a fatigue crack. Developed primarily for fatigue-critical aerospace applications, i.e. fuselage and lower wing skins, the hybrid laminates are orthotropic materials having lower density and higher strength than a simple alloy monolith without reinforcement. Fatigue crack growth in hybrid laminates is a complex process that involves a combination of delamination and fibre bridging. The fibre optic system has been applied to the problem of characterising delamination zone development about a fatigue crack, initiated at a through-thickness fastener hole.
263-270
The International Society for Optical Engineering
Dakin, J.P.
04891b9b-5fb5-4245-879e-9e7361adf904
Austin, T.S.P.
97c7f52a-2535-4fde-b3dc-2150e81ca30f
Gregson, P.J.
ddc3b65d-18fb-4c11-9fa1-feb7e9cbe9fe
Guerrier, D.J.
1811e8eb-dbbb-489c-be4a-ea2ba39c7ba4
Trundle, K.J.
8aea015e-9e61-44c1-979b-dae574bc1a07
Dakin, John P.
Kersey, Alan D.
Paul, Dilip K.
Dakin, J.P.
04891b9b-5fb5-4245-879e-9e7361adf904
Austin, T.S.P.
97c7f52a-2535-4fde-b3dc-2150e81ca30f
Gregson, P.J.
ddc3b65d-18fb-4c11-9fa1-feb7e9cbe9fe
Guerrier, D.J.
1811e8eb-dbbb-489c-be4a-ea2ba39c7ba4
Trundle, K.J.
8aea015e-9e61-44c1-979b-dae574bc1a07
Dakin, John P.
Kersey, Alan D.
Paul, Dilip K.

Dakin, J.P., Austin, T.S.P., Gregson, P.J., Guerrier, D.J. and Trundle, K.J. (1998) Miniature multiplexed fibre-grating-array sensor for the interrogation of localised strain patterns during crack growth studies upon hybrid laminate panels. Dakin, John P., Kersey, Alan D. and Paul, Dilip K. (eds.) In Fiber Optic and Laser Sensors and Applications; Including Distributed and Multiplexed Fiber Optic Sensors VII. vol. 3541, The International Society for Optical Engineering. pp. 263-270 . (doi:10.1117/12.339100).

Record type: Conference or Workshop Item (Paper)

Abstract

As part of a project to optimise hybrid laminates for resistance to fatigue failure, arrays of fibre Bragg gratings are being used to monitor small-scale strain perturbations in composite materials. A remote multiplexed sensing system with 40 remote sensing sites using fibre optic technology, has been developed to monitor the strain field developed across the composite lamina of a hybrid laminate in the vicinity of a fatigue crack. Developed primarily for fatigue-critical aerospace applications, i.e. fuselage and lower wing skins, the hybrid laminates are orthotropic materials having lower density and higher strength than a simple alloy monolith without reinforcement. Fatigue crack growth in hybrid laminates is a complex process that involves a combination of delamination and fibre bridging. The fibre optic system has been applied to the problem of characterising delamination zone development about a fatigue crack, initiated at a through-thickness fastener hole.

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Published date: 1998
Venue - Dates: Fiber Optic and Laser Sensors and Applications; Including Distributed and Multiplexed Fiber Optic Sensors VII, United States, 1998-11-02 - 1998-11-05

Identifiers

Local EPrints ID: 76609
URI: https://eprints.soton.ac.uk/id/eprint/76609
PURE UUID: 597ccd8a-eed4-4f83-9757-bfd79d5e44ed

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:39

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Contributors

Author: J.P. Dakin
Author: T.S.P. Austin
Author: P.J. Gregson
Author: D.J. Guerrier
Author: K.J. Trundle
Editor: John P. Dakin
Editor: Alan D. Kersey
Editor: Dilip K. Paul

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