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Proceedings 2018, 2(8), 374; https://doi.org/10.3390/ICEM18-05195

Characterization of the Modal Parameters of Composite Laminates Using Innovative Ultrathin Polymer Waveguide Sensor Foils

1
Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 903, B-9052 Zwijnaarde, Belgium
2
Centre for Microsystems Technology, Ghent University and IMEC, Technologiepark 15, B-9052 Zwijnaarde, Belgium
Presented at the 18th International Conference on Experimental Mechanics, Brussels, Belgium, 1–5 July 2018.
*
Authors to whom correspondence should be addressed.
Published: 4 May 2018
PDF [841 KB, uploaded 1 June 2018]

Abstract

The use of composite materials, like glass- and carbon- fiber reinforced polymers, is expected to increase exponentially in the coming years. Consequently, in order to monitor the structural health of these materials, the development of new sensing devices is rapidly accelerating. For this purpose, our research groups have recently developed new ultra-thin polymer waveguide sensors which can be exploited to measure both uniaxial and multiaxial strains occurring in composite components. These sensing foils are manufactured by creating Bragg gratings in waveguides realized in flat polymeric substrates, which makes their placement and alignment easier compared to traditional fiber optic sensors. Moreover, using a non-straight waveguide it is possible to spatially multiplex the sensing gratings in such a way that an optical strain rosette can be created. This paper investigates the suitability of the proposed polymer waveguide sensors for the estimation of the modal parameters of composite components.
Keywords: bragg gratings; composite materials; polymer sensor foils; strain based modal analysis bragg gratings; composite materials; polymer sensor foils; strain based modal analysis
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Lamberti, A.; Paepegem, W.V.; Missinne, J. Characterization of the Modal Parameters of Composite Laminates Using Innovative Ultrathin Polymer Waveguide Sensor Foils. Proceedings 2018, 2, 374.

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