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The paper introduced a high speed measurement system called virtual dynamic signal test system for the yarn tension of weaving, winding and warping based on Direct Memory Access (DMA) and which was applied on loom and winding machine to test the performance of the system. The working mode of DMA in the process of signal acquisition was analyzed. Moreover, according to the measurement of the yarn tension,...
This work was dedicated to performing surface oxidation and coating treatments on carbon fibers (CF) and investigating the changes of fiber surface properties after these treatments, including surface composition, relative volume of functional groups, and surface topography with X-ray photoelectron spectroscopy (XPS) and atom force microscopy (AFM) technology. The results show that, after oxidation...
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