缝合编织复合材料低速冲击以及冲击后弯曲性能研究

复合材料科学与工程 ›› 2014, Vol. 0 ›› Issue (7): 42-46.

缝合编织复合材料低速冲击以及冲击后弯曲性能研究

梁倩囡^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:2013-10-14 发布日期:2021-09-15
通讯作者: 阎建华(1956-),男,博士,研究员,主要从事纺织结构复合材料制备及其结构性能的研究。
作者简介:梁倩囡(1989-),女,硕士,主要从事缝合及编织复合材料低速冲击性能的研究。
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)

LOW-VELOCITY IMPACT AND POST-IMPACT BENDING PERFORMANCE OF STITCHED BRAIDED COMPOSITES

LIANG Qian-nan^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:2013-10-14 Published:2021-09-15

摘要/Abstract

摘要： 两片三维四向编织厚片叠层缝合和四片三维四向编织薄片叠层缝合,固化之后得到两种厚度接近的缝合编织复合材料。对两种材料进行冲击以及冲击后弯曲实验,分析其表面和内部损伤特征、分布和机理,探讨其冲击后的剩余弯曲性能。结果表明,3.2J/mm的冲击能量下,缝合编织薄片的表面损伤面积和厚度方向上的损伤小于缝合编织厚片;冲击后弯曲实验中,两种材料受压面的树脂裂纹在厚度方向上的相邻两编织片之间几乎观察不到,受拉面的树脂裂纹沿着冲击造成的树脂裂纹继续向横向、纵向和厚度方向扩展;缝合编织薄片未经冲击与冲击后的弯曲强度和弯曲模量均大于缝合编织厚片,但其弯曲断裂变形小于缝合编织厚片。

关键词: 缝合编织复合材料, 低速冲击, 损伤, 剩余弯曲性能

Abstract: In this paper, two kinds of stitched braided composites with similar thicknesses were prepared. They were consisted of two thick braided sheets and four thin braided sheets respectively. This paper analyzed surface and internal damage characteristics and distribution in the composites induced by impacting and post-impact bending test, and explored their post-impact bending properties. The results are discussed. In the case of the impact energy in 3.2J/mm, the damage of stitched braided composites of four thin braided sheets are more serious than that of stitched braided composites of two thick braided sheets. In post-impact bending test, resin cracks can be hardly observed between adjacent braided sheets on the compression face. Meanwhile, resin cracks on the tension face extend along the cracks induced by impacting; bending strength and modulus of stitched braided composites of four thin braided sheets are greater than that of stitched braided composites of two thick braided sheets. But, its bending fracture deformation is less than that of the later.

Key words: stitched braided composite, low-velocity impact, damage, residual bending performance

中图分类号:

TB332

梁倩囡, 阎建华. 缝合编织复合材料低速冲击以及冲击后弯曲性能研究[J]. 复合材料科学与工程, 2014, 0(7): 42-46.

LIANG Qian-nan, YAN Jian-hua. LOW-VELOCITY IMPACT AND POST-IMPACT BENDING PERFORMANCE OF STITCHED BRAIDED COMPOSITES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(7): 42-46.

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