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Internal Strain Measurement and Impact Response of 3D Woven Carbon Fibre Composites

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Broderick, J, Archer, E, McMillan, A and McIlhagger, AT (2012) Internal Strain Measurement and Impact Response of 3D Woven Carbon Fibre Composites. In: ECCM15 - 15TH EUROPEAN CONFERENCE ON COMPOSITE MATERIALS, , Venice, Italy. ECCM15. 8 pp. [Conference contribution]

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Extrinsic Fabry Perot Interferometer (EFPI) fibre optic sensors have been utilised to measure the internal matrix strain in a three dimensionally woven carbon fibre reinforced polymer composite. EFPI sensors were embedded at two levels within a four layer 3D woven composite, and comparison surface measurements were provided through resistive strain gauging and biaxial extensometry. A variation in tensile modulus of as much as 24% 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 was measured.

Item Type:Conference contribution (Paper)
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Engineering Composites
ID Code:22888
Deposited By:Dr Edward Archer
Deposited On:07 Aug 2012 11:46
Last Modified:07 Aug 2012 11:46

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