EFFECT OF STITCHING ON ENERGY ABSORPTION PROPERTY OF CARBON FIBER BRAIDING COMPOSITE TUBES

Abstract

Abstract: In this study, two kinds of carbon fiber braiding fabric including with and without stitching structure as reinforcement, epoxy resin as matrix were chosen to manufacture carbon fiber braiding composite tubes via transfer molding (RTM) method. The effects of stitching on energy absorption property and mechanical property of braiding composite tubes were investigated. To investigate the energy absorption property and mechanic property of these two kinds of braiding composite tubes, quasi-static compression tests were performed. It was found that stitching improved the energy absorption capacity and mechanical properties obviously. The specific energy absorption of the tube with stitch was 16% higher than the one without stitch. To research the energy absorption mechanisms, the tested tubes were cast in resin, cut, and polished in order to document the energy absorption mechanisms. It was found that the central crack was restrained by the stitching yarn in the stitched braided FRP tube during the crushing process. That is to say, the mechanical property in the thickness of braided tube composite was enhanced. With the effect control of the central crack by the stitching yarn, high energy absorption management could be obtained.

Key words: composite tubes, energy absorption, stitch reinforcement, braiding

CLC Number:

TB332

ZHANG Qian-jin, YANG Yu-qiu, TADASHI Uozumi, MA Yan. EFFECT OF STITCHING ON ENERGY ABSORPTION PROPERTY OF CARBON FIBER BRAIDING COMPOSITE TUBES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(9): 29-34.

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