Analiza struktury nawijanej rury kompozytowej na bazie włókien ciągłych

In this paper, we have presented the problem of composites manufacture and microstructure analysis. The specimens were made of continuous glass and carbon fibers on a polymer matrix (epoxy resin). Eight special rings were designed for project needs. They were made of carbon (five of them) and glass (the rest) fibers. The same amount of material was used for the production of each sample. An analysed rings were made by circumferential fibres wound on a rigid core. Each sample was wound with a different tensile force of fibers to verify the distributions changes and the packing density of the fibers in the composite material. In the next stage, samples were cut to obtain small pieces, which were mounted in epoxy resin. Next, prepared elements were grind on sand papers and polished. After these procedures, prepared areas were analysis by microscope images. The volume fraction of voids, fibers and discontinuities holes in the matrix were analyzed. To verify obtained results method of the image analysis was used, the histogram of structure phase distribution was determined. In both composite materials: fiber volume friction is very high and there was no observable effect of fiber tension during the winding procedure on fiber packing density in the obtained structures.