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Prediction of the reflected spectra from chirped fibre Bragg gratings embedded within cracked crossply laminates

Prediction of the reflected spectra from chirped fibre Bragg gratings embedded within cracked crossply laminates
Prediction of the reflected spectra from chirped fibre Bragg gratings embedded within cracked crossply laminates
Matrix cracking damage is a generic type of damage that develops under load in the off-axis plies of laminated composites and is generally the precursor of more serious damage mechanisms, particularly delamination. Hence, it is important to identify and if possible locate this type of damage. Chirped fibre Bragg grating sensors have been embedded in a transparent glass fibre reinforced plastic crossply laminate and changes to the reflected spectra as a consequence of crack development have been studied. An approximately sinusoidal variation of the intensity of the reflected spectrum occurs at the position of the crack, enabling both crack development and crack position to be identified. A simulation of a reflected spectrum, incorporating a stress transfer model to predict the strains and an optical model to predict the reflected spectrum, is in reasonable agreement with the experimental results.
matrix cracking damage, composite laminates, chirped fibreBragg grating
0957-0233
1609-1614
Palaniappan, J.
b5cef093-6621-4904-9b47-1ad11c954139
Wang, H.
d23f04f1-a300-4744-bd98-2df77c7047df
Ogin, S.L.
6067d51e-8785-4e60-96a6-05038f6a0d31
Thorne, A.
0b4e3808-7cba-412a-8c16-5b327705bac0
Reed, G.T.
ca08dd60-c072-4d7d-b254-75714d570139
Tjin, S.C.
2986cfba-d4ac-4c64-95d3-84093745a566
McCartney, L.N.
fc1815f6-491f-4444-8d4e-ca5e73b9ce87
Palaniappan, J.
b5cef093-6621-4904-9b47-1ad11c954139
Wang, H.
d23f04f1-a300-4744-bd98-2df77c7047df
Ogin, S.L.
6067d51e-8785-4e60-96a6-05038f6a0d31
Thorne, A.
0b4e3808-7cba-412a-8c16-5b327705bac0
Reed, G.T.
ca08dd60-c072-4d7d-b254-75714d570139
Tjin, S.C.
2986cfba-d4ac-4c64-95d3-84093745a566
McCartney, L.N.
fc1815f6-491f-4444-8d4e-ca5e73b9ce87

Palaniappan, J., Wang, H., Ogin, S.L., Thorne, A., Reed, G.T., Tjin, S.C. and McCartney, L.N. (2006) Prediction of the reflected spectra from chirped fibre Bragg gratings embedded within cracked crossply laminates. Measurement Science and Technology, 17 (6), 1609-1614. (doi:10.1088/0957-0233/17/6/044).

Record type: Article

Abstract

Matrix cracking damage is a generic type of damage that develops under load in the off-axis plies of laminated composites and is generally the precursor of more serious damage mechanisms, particularly delamination. Hence, it is important to identify and if possible locate this type of damage. Chirped fibre Bragg grating sensors have been embedded in a transparent glass fibre reinforced plastic crossply laminate and changes to the reflected spectra as a consequence of crack development have been studied. An approximately sinusoidal variation of the intensity of the reflected spectrum occurs at the position of the crack, enabling both crack development and crack position to be identified. A simulation of a reflected spectrum, incorporating a stress transfer model to predict the strains and an optical model to predict the reflected spectrum, is in reasonable agreement with the experimental results.

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More information

Published date: June 2006
Keywords: matrix cracking damage, composite laminates, chirped fibreBragg grating
Organisations: Optoelectronics Research Centre, Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 50270
URI: https://eprints.soton.ac.uk/id/eprint/50270
ISSN: 0957-0233
PURE UUID: 59ab3f79-690e-48e5-9f63-ec0819496441

Catalogue record

Date deposited: 07 Feb 2008
Last modified: 22 Oct 2018 16:32

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