Carbon Fibre Mechanical Testing and Property Characterisation
topic
Single filament tensile testing using ASTM C1557 measures individual carbon fibre tensile strength and modulus at 25 millimetre gauge length with Weibull statistical analysis of strength variability, complemented by impregnated strand tensile testing at larger sample volume, and micro-Raman spectroscopy measuring graphitic order through the G and D band ratio as a non-destructive microstructure characterisation technique.
Role
Provides the fibre-level mechanical property data that forms the basis for composite laminate strength prediction, quality control in fibre manufacturing, and failure analysis when composite structure performance falls below prediction, enabling correlation of fibre microstructural perfection with both single filament properties and composite laminate performance.
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