Evaluation of conductive smart composite polymeric materials for potential applicationsin structural health monitoring and strain detection

  • Sanchez-Sobrado O
  • Rodriguez D
  • Losada R
  • et al.
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Abstract

The presented work collects results from the evaluation of electrical response to mechanical deformation and formation of defects presented by different polymeric based composite materials with potential for applications in Structural Health Monitoring and Strain Detection. With the aim of showing the variety of key materials in sectors like civil aviation, wind energy, automotive or railway that present this ability, specimens of very different nature have been analyzed: a) thermoplastic commercial 3D printing filaments loaded with carbonic fillers; b) epoxy resin loaded with Carbon Nanotubes and c) long carbon fiber reinforced resin composite. Measurements of electrical properties of these materials were taken to evaluate their capability to detect the presence of structural defects of different sizes as well as its spatial location. On the other hand, simultaneous measurements of electrical resistivity and mechanical strain during tensile tests were performed to analyze the potential of materials as strain detectors. All composites studied have shown a positive response (modification of electrical performance) to external mechanical stimulus: induced damage and deformations. Graphical Abstract

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Sanchez-Sobrado, O., Rodriguez, D., Losada, R., & Rodriguez, E. (2023). Evaluation of conductive smart composite polymeric materials for potential applicationsin structural health monitoring and strain detection. Functional Composite Materials, 4(1). https://doi.org/10.1186/s42252-023-00039-x

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