复合材料科学与工程 ›› 2014, Vol. 0 ›› Issue (7): 69-73.

• 应用研究 • 上一篇    下一篇

三维编织结构参数对复合材料拉伸性能的影响

李苏红1,2, 刘丽芳1,2, 阎建华3*, 俞建勇1,3   

  1. 1.东华大学纺织面料技术教育部重点实验室,上海201620;
    2.东华大学纺织学院,上海201620;
    3.东华大学研究院,上海201620
  • 收稿日期:2013-09-22 发布日期:2021-09-15
  • 通讯作者: 阎建华(1956-),男,研究员,博士,主要从事三维编织复合材料制备技术开发及力学性能研究,jh_yan@dhu.edu.cn。
  • 作者简介:李苏红(1989-),女,在读硕士研究生,主要从事三维编织复合材料方面的研究。
  • 基金资助:
    上海市科委《上海市科技成果转化和产业化项目》(12521102400)

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

LI Su-hong1,2, LIU Li-fang1,2, YAN Jian-hua3*, YU Jian-yong1,3   

  1. 1. Key Lab of Textile Science & Technology, Ministry of Education, Shanghai 201620, China;
    2. College of Textiles, Shanghai 201620, China;
    3. Research Institute of Donghua University, Donghua University, Shanghai 201620, China
  • Received:2013-09-22 Published:2021-09-15

摘要: 通过7组实验比较和分析研究,评价了编织结构参数(如编织角,纤维体积分数,轴向纱数与编织纱数之比,三维四向/五向,厚度)对复合材料拉伸性能的影响,且对复合材料的破坏模式进行了研究。实验结果表明,三维编织复合材料具有良好的力学性能,编织角、复合材料尺寸、纤维体积含量、轴向纱数与编织纱数之比等对复合材料的性能有较大的影响;复合材料有两种破坏模式,一种是裂纹沿纤维束扩展,另一种是纤维束拉断,后者为主要破坏模式。这些结果为三维编织复合材料的设计提供了依据。

关键词: 三维编织, 复合材料, 破坏模式, 拉伸性能, 结构参数

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

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