Abstract
Carbon fiber reinforced plastics (CFRPs) are the focus of many research efforts for light weight, high stiffness applications. While CFRPs generally yield more desirable properties than their metal counterparts, variations in the microstructure can lead to problems such as early failure. For example, voids in the matrix provide points of failure initiation in the matrix. The existence of voids is often attributed to nonaxialities in the fiber packing structure, which block the matrix from passing through certain regions of a tow. These non-axialities arise through the processing and handling of tows during manufacturing, where compression of a tow or friction on the outer fibers leads to fibers becoming entangled into one another. It is evident that composite materials cannot be fully utilized without a sound understanding of the manufacturing
Published Version
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