Laser Optoacoustic Measurement of the Volume Concentration of Epoxy Resin in Carbon Fiber Reinforced Plastic Composites

Аннотация

A laser optoacoustic method for determining the volume concentration of a polymer binding and carbon filler in carbon fiber reinforced plastic (CFRP) composites has been proposed and realized. Composite samples fabricated by the vacuum infusion method were studied. The volume concentrations of epoxy resin were measured for a set of CFRP samples. We have shown that there are regions with an excess and a deficiency of the epoxy resin. The method could be used for testing of both reference samples and real composite structures.