• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2025, Vol. 61 ›› Issue (23): 331-343.doi: 10.3901/JME.2025.23.331

Previous Articles    

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

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

CLC Number: