• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2025, Vol. 61 ›› Issue (23): 331-343.doi: 10.3901/JME.2025.23.331

• 制造工艺与装备 • 上一篇    

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碳纤/玻纤层内混杂编织复合材料管件加压冲击失效机理研究

石琳1,2, 杨华1, 吴震宇1, 赵磊1, 彭来湖1,2, 倪庆清3   

  1. 1. 浙江理工大学机械工程学院 杭州 310018;
    2. 浙江理工大学龙港研究院 温州 325000;
    3. 浙江理工大学材料科学与工程学院 杭州 310018
  • 收稿日期:2024-12-14 修回日期:2025-06-10 发布日期:2026-01-22
  • 作者简介:石琳,女,1994 年出生,博士,讲师。主要研究方向为织物增强复合材料力学性能。E-mail:linlinshi2014@163.com
    赵磊(通信作者),男,1990 年出生,博士。主要研究方向为复合材料成形与力学性能预测。E-mail:zhaolei@zstu.edu.cn
  • 基金资助:
    浙江省自然科学基金(LQ23E050021);国家自然科学基金(U22A20182);国家重点研发计划(2023YFE0106400);浙江理工大学科研启动基金(22022162-Y)资助项目

Study on Failure Mechanism of Intralaminar Hybrid Carbon/Glass Fiber Braided Composite Pipes under Pressurized Impact

SHI Lin1,2, YANG Hua1, WU Zhenyu1, ZHAO Lei1, PENG Laihu1,2, NI Qingqing3   

  1. 1. School of Mechanical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018;
    2. Longgang Research Institute, Zhejiang Sci-Tech University, Wenzhou 325000;
    3. School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018
  • Received:2024-12-14 Revised:2025-06-10 Published:2026-01-22

摘要: 利用编织包覆技术织造不同混合比例的碳纤/玻纤层内混杂管状预制体,采用真空辅助树脂传递模塑工艺固化制备复合材料管件,开展管件承压条件下的落锤低速冲击试验,利用Micro-CT三维损伤重构进一步深度探究纤维混杂复合材料管件的低速冲击损伤扩展行为,揭示碳纤/玻纤层内混杂比例对冲击增韧性能的影响规律。结果表明,纤维混杂可以有效减弱材料在失效前的弯曲刚度损失,混杂比例会对试样的弹性弯曲刚度和失效弯曲刚度产生显著影响。混杂复合材料管件的损伤类型由层内占比更高的纤维特性所主导,当混杂比为1∶1的情况下,层内混杂纤维交替单元区域面积更小,更有利于发挥编织结构的损伤扩散抑制作用,获得更稳定和更高的抗冲击性能,因而具有最佳混杂协同效应。

关键词: 层内纤维混杂, 编织管件, 承压低速冲击, 三维损伤重构

Abstract: By using the over-braiding technology to produce different hybrid ratios of carbon/glass fiber intralaminar hybrid tubular preform, the composite pipes are manufactured by the vacuum-assisted resin transfer molding process, and the drop hammer low-velocity pressurized impact test is carried out. The Micro-CT 3D damage reconstruction is used to further investigate the damage extension behavior of the fiber hybrid composite pipes in-depth, and to reveal the influence of the hybrid ratio on the impact toughening performance. The results show that the hybrid fiber can effectively attenuate the loss of bending stiffness before failure, and the hybrid ratio have a significant effect on both of the elastic and failure bending stiffness of the specimen. The damage mode of hybrid pipes is dominated by the fiber characteristics with higher proportion in the layer. When the hybrid ratio is 1∶1, the area of the alternating unit region of hybrid fibers is smaller, which is more conducive to exerting the damage diffusion suppress effect of the braided structure and obtaining a more stable and higher impact resistance, and thus possesses the optimal hybrid synergistic effect.

Key words: intralaminar fiber hybridization, braided pipe, pressurized low-velocity impact, 3D damage reconstruction

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