Internal strain measurement and impact response of three-dimensional angle interlock woven carbon fibre composites

E Archer, J Broderick, S Buchanan, AT McIlhagger

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Extrinsic Fabry Perot interferometer fibre optic sensors have been utilised to measure the internal matrix strain in a three-dimensionally woven carbon fibre-reinforced polymer composite. Extrinsic Fabry Perot interferometer sensors were embedded at two levels within a four-layer three dimensional woven composite, and comparison surface measurements were provided through resistive strain gauging and biaxial extensometry. A variation in tensile strain was found from internal measurement compared with the material surface. Through correlation with micro graphical analysis, a link between the variations in mechanical performance and localised variations in fibre volume fraction could be established. Furthermore, the impact performance of the composite was measured and correlated with computed tomography.
LanguageEnglish
JournalJournal of Reinforced Plastics and Composites
Volumeonline
DOIs
Publication statusPublished - 19 Feb 2013

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Strain measurement
Carbon fibers
Fabry-Perot interferometers
Composite materials
Gaging
Tensile strain
Surface measurement
Fiber optic sensors
Tomography
Volume fraction
Fibers
Sensors
Polymers

Keywords

  • Three-dimensionally weaving
  • computed tomography scan
  • impact damage
  • fibre optic sensors

Cite this

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abstract = "Extrinsic Fabry Perot interferometer fibre optic sensors have been utilised to measure the internal matrix strain in a three-dimensionally woven carbon fibre-reinforced polymer composite. Extrinsic Fabry Perot interferometer sensors were embedded at two levels within a four-layer three dimensional woven composite, and comparison surface measurements were provided through resistive strain gauging and biaxial extensometry. A variation in tensile strain was found from internal measurement compared with the material surface. Through correlation with micro graphical analysis, a link between the variations in mechanical performance and localised variations in fibre volume fraction could be established. Furthermore, the impact performance of the composite was measured and correlated with computed tomography.",
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AU - Buchanan, S

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AB - Extrinsic Fabry Perot interferometer fibre optic sensors have been utilised to measure the internal matrix strain in a three-dimensionally woven carbon fibre-reinforced polymer composite. Extrinsic Fabry Perot interferometer sensors were embedded at two levels within a four-layer three dimensional woven composite, and comparison surface measurements were provided through resistive strain gauging and biaxial extensometry. A variation in tensile strain was found from internal measurement compared with the material surface. Through correlation with micro graphical analysis, a link between the variations in mechanical performance and localised variations in fibre volume fraction could be established. Furthermore, the impact performance of the composite was measured and correlated with computed tomography.

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