GB/T 26749-2022

This standard specifies the method for determining the tensile properties of resin-impregnated carbon fibre yarns, including tensile strength, modulus, and elongation at break. It is primarily applied in the carbon fibre manufacturing and composite materials industries for quality control, material characterization, and performance verification of carbon fibre reinforcements used in aerospace, automotive, and sporting goods. The testing context involves preparing a resin-impregnated yarn specimen and conducting a tensile test under controlled conditions to ensure consistent and comparable results across different production batches.