Multiplexed fibre optic sensors for monitoring resin infusion, flow, and cure in composite material processing

Edmon Chehura; Renata Jarzebinska; Elisabete F. R. Da Costa; Alexandros A. Skordos; Stephen W. James; Ivana K. Partridge; Ralph P. Tatam

doi:10.1117/12.2012214

23 April 2013 Multiplexed fibre optic sensors for monitoring resin infusion, flow, and cure in composite material processing

Edmon Chehura, Renata Jarzebinska, Elisabete F. R. Da Costa, Alexandros A. Skordos, Stephen W. James, Ivana K. Partridge, Ralph P. Tatam

Author Affiliations +

Proceedings Volume 8693, Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2013; 86930F (2013) https://doi.org/10.1117/12.2012214
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2013, San Diego, California, United States

Abstract

The infusion, flow and cure of RTM6 resin in a carbon fibre reinforced composite preform have been monitored using a variety of multiplexed fibre optic sensors. Optical fibre Fresnel sensors and tilted fibre Bragg grating (TFBG) sensors were configured to monitor resin infusion/flow in-plane of the component. The results obtained from the different sensors were in good agreement with visual observations. The degree of cure was monitored by Fresnel sensors via a measurement of the refractive index of the resin which was converted to degree of cure using a calibration determined from Differential Scanning Calorimetry. Fibre Bragg grating sensors fabricated in highly linearly birefringent fibre were used to monitor the development of transverse strain during the cure process, revealing through-thickness material shrinkage of about 712 με and residual strain of 223 με. An alternative approach to infusion monitoring, based on an array of multiplexed tapered optical fibre sensors interrogated using optical frequency domain reflectometry, was also investigated in a separate carbon fibre preform that was infused with RTM6 resin.

Citation Download Citation

Edmon Chehura, Renata Jarzebinska, Elisabete F. R. Da Costa, Alexandros A. Skordos, Stephen W. James, Ivana K. Partridge, and Ralph P. Tatam "Multiplexed fibre optic sensors for monitoring resin infusion, flow, and cure in composite material processing", Proc. SPIE 8693, Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2013, 86930F (23 April 2013); https://doi.org/10.1117/12.2012214

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