DEVELOPMENT OF 3-D HEMISPHERICAL BIAXIAL WEFT-KNITTED THERMOSET COMPOSITES

Authors : Özgür Demircan, Tatsuya Kosui, Shinsuke Ashibe, Asami Nakai

Pages : 305-310

Doi:10.32710/tekstilvekonfeksiyon.619397

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Publication Date : 2019-12-31

Article Type : Research

Abstract :The present work concentrates on the development of 3-D hemispherical biaxial weft-knitted (BWK) thermoset composites. The objective is to improve the quality of the 3-D composites with BWK preform. Two kinds of the 3-D hemispherical BWK composites with the flat surfaced and 3-D dome shaped biaxial weft-knitted preforms were produced by hand lay-up method. The quantitative analysis of wrinkles was done by measuring the locking angles between the fiber bundles in the composites. Small numbers of wrinkle heights (1 height/1 cm) were observed on the flange surface of the 3-D hemispherical BWK composite with the dome shaped preform compared to the 3-D hemispherical BWK composite with the flat surfaced preform (10 heights/1 cm).
Keywords : biaxial weft-knitting, 3-D thermoset composites, locking angle, wrinkle of surface