Investigation of the Curing Residual Stress in Gr/Epoxy Laminated Composites by Using Embedded Fiber Bragg Grating Sensor

Abstract:

The curing monitoring of the polymeric composite materials has attracted wide interests recently. In order to improve the performance of Gr/Epoxy composites, monitoring the curing process is a demand, especially for the characterization of residual stress after manufacture. The main objective of current research is to explore the application potential of embedded fiber Bragg grating (FBG) to monitor the characterization of the curing process in a Graphite/Epoxy composite. The changes in the shape of the optical spectra, intensity attenuation as well as wavelength shifts in the optical fiber sensors were utilized to assess the curing development and residual stress measurement. The residual stress yielding during curing process was analyzed and presented systematically in this paper.

• Periodical: Advanced Materials Research (Volumes 287-290)
• Pages: 357-363
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.287-290.357
• Online since: July 2011
• Authors: Chia Chin Chiang
• Keywords: Composite, Curing, Fiber Bragg Grating (FBG), Optical Fiber Sensor (OFS)

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