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Proceedings Paper

A fiber-optic epoxy cure monitoring technique by using a wavelength-swept laser
Author(s): Hyunjin Kim; Dae-gil Kim; Umesh Sampath; Minho Song
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Paper Abstract

An epoxy cure monitoring system has been constructed by combining fiber grating sensors and Fresnel reflection monitoring. The sensors measure strain and refractive index variations during the curing process, indicating the onset of gelification, the progress, and the end of curing. We used a wavelength-swept laser source to address both types of sensors. The signals from different sensors could be easily separated, resulting in simple optical setup and increased efficiency. The fiber grating sensors are demodulated by a spectrometer. The output fluctuation in the Fresnel reflection was compensated by referencing it with the tapped output of light source.

Paper Details

Date Published: 1 July 2015
PDF: 4 pages
Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 96553V (1 July 2015); doi: 10.1117/12.2184446
Show Author Affiliations
Hyunjin Kim, Chonbuk National Univ. (Korea, Republic of)
Dae-gil Kim, Chonbuk National Univ. (Korea, Republic of)
Umesh Sampath, Chonbuk National Univ. (Korea, Republic of)
Minho Song, Chonbuk National Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 9655:
Fifth Asia-Pacific Optical Sensors Conference
Byoungho Lee; Sang-Bae Lee; Yunjiang Rao, Editor(s)

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