二维二轴单向编织铺层复合材料拉伸性能的研究

玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (3): 63-67.

二维二轴单向编织铺层复合材料拉伸性能的研究

施丽^1,2,阳玉球^1,2,阎建华^3*

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:2017-09-18 出版日期:2018-03-20 发布日期:2018-03-20
通讯作者: 阎建华(1956-),男,博士生导师,主要从事编织复合材料方面的研究,jh_yan@dhu.edu.cn。
作者简介:施丽(1993-),女,硕士研究生,主要从事编织复合材料方面的研究。
基金资助:
上海市科技成果转化和产业化资助项目〈125211020.00);上海市教委上海高校知识服务平台资助项目〈ZF1215)

TENSILE PROPERTIES OF TWO-DIMENSIONAL TWO-AXIAL UNIDIRECTIONAL BRAIDED COMPOSITE

SHI Li^{1, 2}, YANG Yu-qiu^{1, 2}, YAN Jian-hua^3*

1.Key Lab of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China;
2.College of Textiles, Donghua University, Shanghai 201620, China;
3.Research Institute of Donghua University, Shanghai 201620, China

Received:2017-09-18 Online:2018-03-20 Published:2018-03-20

摘要/Abstract

摘要： 提出了一种新型的二维二轴单向编织结构,研究了编织角和纤维体积分数的变化对该种结构复合材料拉伸性能的影响,并结合编织结构的特点分析了试样在拉伸破坏过程中的裂纹扩展模式。结果表明,上述编织复合材料的拉伸强度随纤维体积分数的增加而增加,但编织角的小幅度变化对拉伸性能影响较小。受编织结构的影响,试样内部在拉伸载荷作用下形成了两种分布规律的裂缝,层内裂缝沿样品厚度方向延伸,相邻铺层内的裂缝没有构成连续的扩展;层间裂缝沿着层与层的接触面延伸,表现为层间分层效应。二维二轴单向编织铺层复合材料内部裂缝的扩展模式综合表现为由上下铺层逐层向中心铺层扩展。本文的研究结果对于该类结构材料的设计与应用具有一定的指导意义。

关键词: 复合材料, 单向编织, 拉伸性能, 编织角, 编织层数, 破坏模式

Abstract: A new braided structure named two-dimensional two-axial unidirectional braided structure was proposed in this paper. Different specimens were prepared to study the influence of different braided angle and fiber volume fraction on its tensile properties. Further investigation was made to study how cracks stretch in this composite under tensile loading process. Experimental results reveal that tensile strength of this composite increases with the increase of fiber volume fraction, but small changes of braided angle has little influence on tensile properties of two-dimensional two-axial unidirectional braided composites. With the influence of braided structure, there are two kinds of cracks, in-layer cracks which stretch along the thickness direction of specimens and interlayer cracks which extend along layers’ contact surface. In general, cracks are showing the extending trend from upper or lower layers to the center layer.The study in this paper gives guiding significance for the design and application of this kind of structural material.

Key words: composites, unidirectional braiding, tensile properties, braiding angle, braided layers, damage

中图分类号:

TB332

施丽,阳玉球,阎建华. 二维二轴单向编织铺层复合材料拉伸性能的研究[J]. 玻璃钢/复合材料, 2018, 0(3): 63-67.

SHI Li, YANG Yu-qiu, YAN Jian-hua. TENSILE PROPERTIES OF TWO-DIMENSIONAL TWO-AXIAL UNIDIRECTIONAL BRAIDED COMPOSITE[J]. Fiber Reinforced Plastics/Composites, 2018, 0(3): 63-67.

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