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Integration and evaluation of a meander-shaped fibre-optical sensor in GFRP coupons

Andreas Janetzko-Preisler, Friedrich Wolf-Monheim, Dominik Kaiser, Ralph Wojtczyk, Athanasios Dafnis, Kai-Uwe Schröder, Wolfgang David, Paul Zandbergen
2021 10th EASN International Conference on Innovation in Aviation & Space to the Satisfaction of the European Citizens (10th EASN 2020) 2nd-5th September 2020 10th EASN International Conference on "Innovation in Aviation & Space to the Satisfaction of the European Citizens"  

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Fibre-reinforced plastics are attracting more and more attention also in non-aviation sectors. The possible formation of internal damage and its difficult detection thus simultaneously increases the need for structural health monitoring. In this case especially fibreoptical sensors possess an enormous potential. In the previous work the use of a meandershaped sensor layout was proposed, utilizing strain in longitudinal direction for loads monitoring and distinct measuring sections in
more » ... direction for structural health monitoring. In the present work, the proposed meander-shaped sensor layout is integrated inside unidirectional coupons using tailored fibre placement. Further samples without a sensor and samples with a straight sensor-fibre were also manufactured as a reference. The influence of the sensor on the static strength and stiffness is then examined in a test campaign using a three-point bending setup. In addition, the functionality of the meander-shaped sensor layout is validated.
doi:10.18154/rwth-2021-01524 fatcat:z2xojspz5bdszinktelj5w57zq
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Andreas Janetzko-Preisler, Friedrich Wolf-Monheim, Dominik Kaiser, Ralph Wojtczyk, Athanasios Dafnis, Kai-Uwe Schröder, Wolfgang David, Paul Zandbergen. "Integration and evaluation of a meander-shaped fibre-optical sensor in GFRP coupons." 10th EASN International Conference on Innovation in Aviation & Space to the Satisfaction of the European Citizens (10th EASN 2020) 2nd-5th September 2020 10th EASN International Conference on "Innovation in Aviation & Space to the Satisfaction of the European Citizens" (2021) 1