DETERMINATION OF FIBER VOLUME FRACTIONS IN WOVEN FABRICCOMPOSITES LAMINATES BY IMAGE ANALYSIS

The methods for determining the fiber volume fraction in carbon fabric reinforced composite laminateswere developed by using the processing and analyzing techniques of section images of laminates , which are sampledby the use of CCD camera and A/ D device. Special measuring step s were designed according to the principles of determining the fiber volume f raction , using the geomet rical method and threshold method. The captured images weremanipulated and analyzed using Photoshop sof tware. The result s are in agreement with the values offered by thecomposites maker. Therefore the methods are considered feasible.