碳/玻混杂三维五向编织复合材料工字梁弯曲及失效行为

doi:10.19936/j.cnki.2096-8000.20260128.015

复合材料科学与工程 ›› 2026, Vol. 0 ›› Issue (1): 109-116.DOI: 10.19936/j.cnki.2096-8000.20260128.015

碳/玻混杂三维五向编织复合材料工字梁弯曲及失效行为

赵雨晴^1,2, 李倩倩^1,2, 李炜^1,2,3*

1.东华大学纺织学院,上海 201620;
2.东华大学民用航空复合材料协同创新中心,上海 201620;
3.产业用纺织品教育部工程研究中心,上海 201620

收稿日期:2024-10-18 出版日期:2026-01-28 发布日期:2026-03-12
通讯作者: 李炜(1971—),女,博士,教授,博士生导师,研究方向为纤维树脂基复合材料的性能,liwei@dhu.edu.cn。
作者简介:赵雨晴(2000—),女,硕士研究生,研究方向为纤维树脂基复合材料的制备与性能。
基金资助:
国家重点研发计划(2022YFB3704504)

The bending and failure behavior of carbon/glass hybrid 3D five-direction braided I-Beam composite

ZHAO Yuqing^1,2, LI Qianqian^1,2, LI Wei^1,2,3*

1. College of Textiles, Donghua University, Shanghai 201620, China;
2. Civil Aviation Composites Collaborative Innovation Centre, Donghua University, Shanghai 201620, China;
3. Ministry of Education Engineering Research Centre for Technical Textiles, Shanghai 201620, China

Received:2024-10-18 Online:2026-01-28 Published:2026-03-12

摘要/Abstract

摘要： 采用三维编织技术和真空辅助树脂灌注成型工艺制备了碳/玻混杂三维五向编织复合材料工字梁,对不同混杂比例和不同混杂部位的复合材料工字梁进行四点弯曲测试,结合三维数字图像相关(3D Digital Image Correlation,3D-DIC)技术分析其应变分布和损伤过程。结果表明:采用不同混杂比例时,1/3碳纤维轴纱和2/3碳纤维轴纱相比纯玻璃纤维试样的强度提升了4.5%和11.5%,随着碳纤维占比的增加,复合材料的强度逐渐提升,但提升幅度较小;而碳纤维分布位置不同时,工字梁弯曲失效形式也不同,纯玻璃纤维和碳纤维在下翼缘的2种试样属于下压头附近边缘断裂的失效形式,碳纤维在腹板、腹板和下翼缘的2种试样属于腹板前后错位倾斜的失效形式,碳纤维在上翼缘、上翼缘和下翼缘、上翼缘和腹板的3种试样都属于腹板中心纵向断裂的失效形式;结合位移-载荷曲线及失效形式分析可知,1/3碳纤维分布于上翼缘,2/3碳纤维分布于上翼缘和下翼缘时,工字梁强度及抵抗变形的能力更佳,碳纤维更适合混杂于上翼缘。

关键词: 三维编织技术, 碳/玻混杂, 工字梁, 四点弯曲, 三维数字图像相关

Abstract: Three-dimensional (3D) five-direction braided glass/carbon hybrid I-beam composites were prepared by using 3D braiding technology and vacuum assisted resin transfer technology, the four-point bending experiments of I-beam composites with different hybrid proportions and different hybrid positions were conducted, and the stress distribution and damage process were analyzed using three-dimensional digital image correlation (3D-DIC) technology. The results show that the strength of 1/3 carbon fiber axis yarn and 2/3 carbon fiber axis yarn is only increased by 4.5% and 11.5% compared with that of glass fiber, and the different proportion of carbon fiber has little effect on the strength of I-beam composites. The bending failure modes of I-beam are different when the carbon fiber distribution is different. The two samples of pure glass and carbon fiber at the lower flange belong to the failure mode of edge fracture near the lower press head, while the two samples of carbon fiber at the web, web and lower flange belong to the failure mode of the front and back dislocation tilt of the web. The three samples of carbon fiber on upper flange, upper flange and lower flange, upper flange and web all belong to the failure modes of longitudinal fracture in the center of the web. Combined with load-displacement curve and failure mode analysis, the carbon fiber is more suitable for mixing in the upper flange. When 1/3 carbon fiber is distributed in the upper flange and 2/3 carbon fiber is distributed in the upper and lower flange, the strength and deformation resistance of I-beam are better.

Key words: 3D braiding, carbon/glass fiber hybrid, I-beam, four-point bending, 3D-DIC

中图分类号:

TB332

赵雨晴, 李倩倩, 李炜. 碳/玻混杂三维五向编织复合材料工字梁弯曲及失效行为[J]. 复合材料科学与工程, 2026, 0(1): 109-116.

ZHAO Yuqing, LI Qianqian, LI Wei. The bending and failure behavior of carbon/glass hybrid 3D five-direction braided I-Beam composite[J]. COMPOSITES SCIENCE AND ENGINEERING, 2026, 0(1): 109-116.

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碳/玻混杂三维五向编织复合材料工字梁弯曲及失效行为

The bending and failure behavior of carbon/glass hybrid 3D five-direction braided I-Beam composite

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