A TGA technique for determining graphite fiber content in epoxy composites

A new technique has been developed to measure the fiber content of graphite fiber-reinforced polymer matrix composites. This new method requires less material and less time than the standard matrix digestion method. With data for the densities of the matrix, fiber, and composite, the method can be used to calculate fiber and void volumes. The new method was verified by comparing results with those obtained by using the standard matrix digestion method.