Abstract
The hollow-triangle fiber is a novel profiled fiber. Its cross-sectional shape and shape factor index were obtained by a microcomputer image acquisition system, with a polarization capability and image analysis software. The shape factors of the fiber, such as shape factor in radius, shape factor in cross-section, branch factor and volume content were tested. The cross-section shape of cross-hollow fiber was compared with that of the hollow fiber. After that, a novel method about equivalent diameter was proposed to evaluate the characteristic shape coefficient. The method possesses many merits such as rapid, simple, accurate, convenient and thus being of great practical value.
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