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Design of polarization-maintaining FBGs using polyimide films to improve strain-temperature sensing in CFRP laminates

Design of polarization-maintaining FBGs using polyimide films to improve strain-temperature sensing in CFRP laminates
Design of polarization-maintaining FBGs using polyimide films to improve strain-temperature sensing in CFRP laminates
Uniform Fiber Bragg Grating sensors based on Polarization-Maintaining fibers are designed for simultaneous longitudinal strain and temperature measurement of Carbon Fiber Reinforced Polymer laminates. Panda, Bow tie and Pseudo-rectangle optical fiber shape sections are investigated employing three different embedding methods, for each optical fiber. The simulation accurately takes into account that the fibers are embedded in unidirectional Carbon Fiber Reinforced Polymer and covered between two adhesive polyimide films. An exhaustive, accurate and robust investigation of the mechanisms originating Bragg wavelength shift is developed by considering a complete multiphysical model including: the propagation modes and their interaction, the birefringence, the optomechanical and thermal behaviour of both the optical fiber and the embedding composite material. For the first time, the use of polyimide films is proposed to obtain an increase of temperature sensor sensitivity, reducing the stress-transfer, due to thermal expansion, between the composite laminate and the sensing element. The designed Fiber Bragg Grating sensors are compared and their potential application, for simultaneous strain and temperature measurement of Carbon Fiber Reinforced Polymer is discussed.
Modeling, fiber gratings, sensors, theory and design
1943-0655
Annunziato, A.
e6e33703-92b1-4cf0-9b9f-5e577feb0edc
Anelli, F.
8f1d4063-6cf6-41c0-bbec-991a934bfb39
Gates, J.C.
b71e31a1-8caa-477e-8556-b64f6cae0dc2
Holmes, C.
16306bb8-8a46-4fd7-bb19-a146758e5263
Prudenzano, F.
a650c97a-97ca-4791-b93f-dbd9ac693048
Annunziato, A.
e6e33703-92b1-4cf0-9b9f-5e577feb0edc
Anelli, F.
8f1d4063-6cf6-41c0-bbec-991a934bfb39
Gates, J.C.
b71e31a1-8caa-477e-8556-b64f6cae0dc2
Holmes, C.
16306bb8-8a46-4fd7-bb19-a146758e5263
Prudenzano, F.
a650c97a-97ca-4791-b93f-dbd9ac693048

Annunziato, A., Anelli, F., Gates, J.C., Holmes, C. and Prudenzano, F. (2021) Design of polarization-maintaining FBGs using polyimide films to improve strain-temperature sensing in CFRP laminates. IEEE Photonics Journal, 13 (2), [9366969]. (doi:10.1109/JPHOT.2021.3063172).

Record type: Article

Abstract

Uniform Fiber Bragg Grating sensors based on Polarization-Maintaining fibers are designed for simultaneous longitudinal strain and temperature measurement of Carbon Fiber Reinforced Polymer laminates. Panda, Bow tie and Pseudo-rectangle optical fiber shape sections are investigated employing three different embedding methods, for each optical fiber. The simulation accurately takes into account that the fibers are embedded in unidirectional Carbon Fiber Reinforced Polymer and covered between two adhesive polyimide films. An exhaustive, accurate and robust investigation of the mechanisms originating Bragg wavelength shift is developed by considering a complete multiphysical model including: the propagation modes and their interaction, the birefringence, the optomechanical and thermal behaviour of both the optical fiber and the embedding composite material. For the first time, the use of polyimide films is proposed to obtain an increase of temperature sensor sensitivity, reducing the stress-transfer, due to thermal expansion, between the composite laminate and the sensing element. The designed Fiber Bragg Grating sensors are compared and their potential application, for simultaneous strain and temperature measurement of Carbon Fiber Reinforced Polymer is discussed.

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Accepted/In Press date: 26 February 2021
Published date: 2 March 2021
Additional Information: Funding Information: This research has been partially developed within the projects: POR FESR-FSE 2014-2020 Innonetwork ?Sinach ? Integrated systems for mininvasive surgical navigation? ? n. BLNGWP7; PON R&I 2014-2020 ?New Satellites Generation components - NSG? ? Cod. Id. ARS01_01215 NSG; MIUR PNR 2015-2020 ?Agricolture Green & Digital ? AGREED?, n. ARS01_00254; H2020-ICT-37-2020 ?Photonic Accurate and Portable Sensor Systems Exploiting Photo-Acoustic and Photo-Thermal Based Spectroscopy for Real-Time Outdoor Air Pollution Monitoring - PASSEPARTOUT ?, n. 101016956; EPSRC ?Roll-2-Roll -R2R? manufacture of multilayer planar optics?, EP/V053213/1. Publisher Copyright: © 2009-2012 IEEE. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
Keywords: Modeling, fiber gratings, sensors, theory and design

Identifiers

Local EPrints ID: 453520
URI: http://eprints.soton.ac.uk/id/eprint/453520
ISSN: 1943-0655
PURE UUID: d18722a4-0c4e-42d7-a478-096e2324e63e
ORCID for J.C. Gates: ORCID iD orcid.org/0000-0001-8671-5987
ORCID for C. Holmes: ORCID iD orcid.org/0000-0001-9021-3760

Catalogue record

Date deposited: 18 Jan 2022 18:10
Last modified: 17 Mar 2024 03:08

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Contributors

Author: A. Annunziato
Author: F. Anelli
Author: J.C. Gates ORCID iD
Author: C. Holmes ORCID iD
Author: F. Prudenzano

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