INFLUENCE OF 3D BRAIDING STRUCTURE PARAMETERS ON TENSILE PROPRETIES OF COMPOSITES

Abstract

Abstract: In this paper, based on seven experimental comparisons and analyses, the influences of three dimensional braiding structure parameters (such as braiding angle, fibre volume fraction, the number of axial yarns to the number of braiding yarns ratio, 3D four-directional/five-directional, thickness) on tensile properties of composites are evaluated, and the failure mode of composites is studied. The results show that the 3D braided composites have good tensile performance, and the yarn braiding angle, composites size, fibre volume fraction and the number of axial yarns to the number of braiding yarns ratio are important factors to the improvement of properties. Moreover, composites have two kinds of failure modes: one is the crack propagation along the fibre bundles, another is bundle fracture. And, the latter is the main failure mode. These results provide a basis for the design of 3D braided composites.

Key words: 3D braiding, composites, failure mode, tensile properties, structure parameters

CLC Number:

TB332

LI Su-hong, LIU Li-fang, YAN Jian-hua, YU Jian-yong. INFLUENCE OF 3D BRAIDING STRUCTURE PARAMETERS ON TENSILE PROPRETIES OF COMPOSITES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(7): 69-73.

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