Polymer matrices for composite materials: monitoring of manufacturing process, mechanical properties and ageing using fiber-optic sensors
Davide Airoldi, Pietro Aceti, Giuseppe Saladownload PDF
Abstract. Composite materials have gained significant prominence in the field of aerospace engineering owing to their exceptional strength-to-weight ratio, making them well-suited for structural applications. However, these materials are susceptible to degradation due to exposure to environmental factors, such as humidity and temperature changes. Detecting and quantifying such damage presents considerable challenges, particularly in the case of cyclically loaded components. Fiber Bragg Grating (FBG) sensors provide a non-destructive means of monitoring composite material degradation by leveraging optical reflection to measure changes in strain and temperature. This research aims to assess and validate a methodology for employing FBG sensors to effectively monitor the degradation of composite material matrices. The investigation mainly consists in characterizing the correlation between FBG sensor wavelength shifts and the strains incurred due to the manufacturing process, moisture absorption, and thermal effects. The anticipated outcomes hold the potential to enhance the reliability and safety of composite structures employed within the aeronautical domain.
Polymer Matrices, Humidity Absorption, Fiber Optic Sensors, Epoxy Resin, Hygrothermal Aging
Published online 11/1/2023, 4 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Davide Airoldi, Pietro Aceti, Giuseppe Sala, Polymer matrices for composite materials: monitoring of manufacturing process, mechanical properties and ageing using fiber-optic sensors, Materials Research Proceedings, Vol. 37, pp 333-336, 2023
The article was published as article 73 of the book Aeronautics and Astronautics
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 V. Giurgiuntiu, Structural Health Monitoring of Aerospace Composite, Elsevier, 2016.
 P. Giaccari, H. G. Limberger e P. Kronenberg, «Influence of humidity and temperature on polyimide-coated» in Bragg Gratings, Photosensitivity, and Poling in Glass fibers and Waveguides: Applications and Fundamentals, Optical Society of America, p. BFB2, (2001). https://doi.org/10.1364/BGPP.2001.BFB2
 P. Aceti, «Sensing principles of FBG in humid environments,» Politecnico di Milano, 2023.
 Teck L. Yeo, Tong Sun, Kenneth T. V. Grattan, David Parry, Rob Lade, and Brian D. Powell, «Polymer-Coated Fiber Bragg Grating for Relative Humidity Sensing,» IEEE Sensor Journal, 2005.
 Pascal Kronenberg and Pramod K. Rastogi, Philippe Giaccari and Hans G. Limberger, «Relative humidity sensor with optical fiber Bragg gratings», Optics Letters, 2002. https://doi.org/10.1364/OL.27.001385
 Pietro Aceti, Luca Carminati, Paolo Bettini and Giuseppe Sala. Hygrothermal ageing of composite structures. Part 1: technical review. Composite Structures, 117076, 2023. https://doi.org/10.1016/j.compstruct.2023.117076
 Pietro Aceti, Luca Carminati, Paolo Bettini and Giuseppe Sala. Hygrothermal ageing of composite structures. Part 2: mitigation technique, detection and removal. Composite Structures, 117076, 2023. https://doi.org/10.1016/j.compstruct.2023.117076
 ASTM International. Standard Test Method tensile properties of plastics. D638