Shape memory polymer composites (SMPCs) have the potential for many applications in aerospace, spanning from self-repairing of structures to self-deploying of antennas, solar sails, or functional devices (e.g. for grabbing small space debris). In all these cases, it may be essential to have information about their configuration at different stages of shape recovery. In this study, the strain history of a prepreg carbon fibre system, cured with a shape memory polymer (SMP) interlayer, is monitored through a Fibre Bragg Grating (FBG), a fibre optic sensor device. SMPC has been manufactured by using traditional technologies for aerospace. After manufacturing cylindrical shape samples, an external fibre optic system is added to the composite structure; this system is especially suited for high temperatures which are necessary for SMP recovery and composite softening. Sensor functionality is checked before and after each strain history path. Optic fibre arrangement is optimized to avoid unwanted breakings whereas strains are limited by fibre collapsing, i.e. within nominal 2% of deformation. Dynamic information about shape recovery gives fundamental insights about strain evolution during time as well as its spatial distribution.

Quadrini, F., Santo, L., Ciminello, M., Concilio, A., Volponi, R., & Spena, P. (2016). Shape memory polymeric composites sensing by optic fibre Bragg gratings: A very first approach. In AIP Conf. Proc. (pp.020090). American Institute of Physics Inc. [10.1063/1.4949665].

Shape memory polymeric composites sensing by optic fibre Bragg gratings: A very first approach

QUADRINI, FABRIZIO;SANTO, LOREDANA;
2016

Abstract

Shape memory polymer composites (SMPCs) have the potential for many applications in aerospace, spanning from self-repairing of structures to self-deploying of antennas, solar sails, or functional devices (e.g. for grabbing small space debris). In all these cases, it may be essential to have information about their configuration at different stages of shape recovery. In this study, the strain history of a prepreg carbon fibre system, cured with a shape memory polymer (SMP) interlayer, is monitored through a Fibre Bragg Grating (FBG), a fibre optic sensor device. SMPC has been manufactured by using traditional technologies for aerospace. After manufacturing cylindrical shape samples, an external fibre optic system is added to the composite structure; this system is especially suited for high temperatures which are necessary for SMP recovery and composite softening. Sensor functionality is checked before and after each strain history path. Optic fibre arrangement is optimized to avoid unwanted breakings whereas strains are limited by fibre collapsing, i.e. within nominal 2% of deformation. Dynamic information about shape recovery gives fundamental insights about strain evolution during time as well as its spatial distribution.
8th International Conference on Times of Polymers and Composites: From Aerospace to Nanotechnology
ita
2016
Rilevanza internazionale
contributo
Settore ING-IND/16 - Tecnologie e Sistemi di Lavorazione
English
Bragg grating; carbon fibre; composites; optic fibre; shape memory;
Intervento a convegno
Quadrini, F., Santo, L., Ciminello, M., Concilio, A., Volponi, R., & Spena, P. (2016). Shape memory polymeric composites sensing by optic fibre Bragg gratings: A very first approach. In AIP Conf. Proc. (pp.020090). American Institute of Physics Inc. [10.1063/1.4949665].
Quadrini, F; Santo, L; Ciminello, M; Concilio, A; Volponi, R; Spena, P
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/173229
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