PSI - Issue 18

Natalia Kosheleva et al. / Procedia Structural Integrity 18 (2019) 129–134 Author name / Structural Integrity Procedia 00 (2019) 000–000

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Fig. 6. Image of the internal structure of a CFRP with a woven reinforcement scheme and embedded optical fiber

The study of the obtained images hasn’t show any visually noticable effect of embedded optical fiber on the microstructure of the CFRP. 4. Conclusions In the paper, a cross-sectional images of a polymer composite material (GFRP and CFRP) with an embedded optical fiber with different types of surface treatments was studied. It is noted that when the examined surface is polished, the internal structure of the sample is more clearly visible. The study showed that the optical fiber embedded into the structure of two types of composite materials (glass-fiber reinforced plastic and carbon fiber-reinforced plastic) with a woven reinforcement scheme does not cause the formation of a technological defect - a resin pocket and practically does not affect the microstructure of the composite material. Acknowledgements The research was supported by RFBR (project No. 17-41-590684 r_ural_a). References Al-Shawk, A., Tanabi, H., Sabuncuoglu, B., 2018. Investigation of Stress Distributions in the Resin Rich Region and Failure Behavior in Glass Fiber Composites with Microvascular Channels under Tensile Loading. Composite Structures 192, 101–14. Lammens, N., et al. 2015. Finite Element Prediction of Resin Pocket Geometry around Embedded Optical Fiber Sensors in Prepreg Composites. Composite Structures 132, 825–32. Matveenko, V.P., Kosheleva, N.A., Shardakov, I.N., Voronkov, A.A.., 2018. Temperature and Strain Registration by Fibre-Optic Strain Sensor in the Polymer Composite Materials Manufacturing. International Journal of Smart and Nano Materials 9(2), 99–110. Di Sante, R., 2015. Fibre Optic Sensors for Structural Health Monitoring of Aircraft Composite Structures: Recent Advances and Applications. Sensors 15(8), 18666–713. Shivakumar, K., Emmanwori, L., 2004. Mechanics of Failure of Composite Laminates with an Embedded Fiber Optic Sensor. Journal of Composite Materials 38(8), 669–80. Silva, José M.A., Devezas, Tessaleno C., Silva, AbíLio P., Ferreira, José A.M.. 2005. Mechanical Characterization of Composites with Embedded Optical Fibers. Journal of Composite Materials 39(14), 1261–81.