Journal
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS
Volume 9, Issue 6, Pages S60-S65Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1464-4258/9/6/S09
Keywords
optical fibre sensor; refractive index; cure monitoring; fibre gratings
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Funding
- EPSRC [EP/D059011/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/D059011/1] Funding Source: researchfish
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The use of fibre grating refractometers as a means of monitoring the cure of a UV- cured epoxy resin is presented. The wavelength shift of the attenuation bands of a long period grating and the spectral response of a tilted fibre Bragg grating sensor were measured simultaneously during the cure of the resin and compared with measurements made using a fibre optic Fresnel- based refractometer. The results showed a good correlation ( 6 x 10(-3) rius) and illustrate the potential of the techniques for non-invasive composite material cure monitoring.
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