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开孔位置对三维机织复合材料连接性能的影响

张一帆 史志伟 张茜 刘燕峰 张代军 陈利

张一帆, 史志伟, 张茜, 等. 开孔位置对三维机织复合材料连接性能的影响[J]. 复合材料学报, 2023, 42(0): 1-9.
引用本文: 张一帆, 史志伟, 张茜, 等. 开孔位置对三维机织复合材料连接性能的影响[J]. 复合材料学报, 2023, 42(0): 1-9.
ZHANG Yifan, SHI Zhiwei, ZHANG Qian, et al. Effect of opening position on the connection performance of 3D woven composite materials[J]. Acta Materiae Compositae Sinica.
Citation: ZHANG Yifan, SHI Zhiwei, ZHANG Qian, et al. Effect of opening position on the connection performance of 3D woven composite materials[J]. Acta Materiae Compositae Sinica.

开孔位置对三维机织复合材料连接性能的影响

基金项目: 国家科技重大专项项目(2017-Ⅶ-0011-0177); 航空发动机及燃气轮机基础科学中心项目(P2022-B-IV-014-001); 天津市海河实验室项目(22HHXCJC00007); 国防科技重点实验室基金(6142906210406)
详细信息
    通讯作者:

    陈利,博士,教授,博士生导师,研究方向为先进纺织复合材料 E-mail:chenli@tiangong.edu.cn

  • 中图分类号: TB332

Effect of opening position on the connection performance of 3D woven composite materials

Funds: National science and Technology Major Project, China (2017-VII-0011-0177); Science Center for Gas Turbine Project (P2022-B-IV-014-001) Tianjin Haihe Laboratory Scientific Research Program (22HHXCJC00007); Science and Technology Foundation of Key Laboratory of Advanced Functional Composites Laboratory, China (6142906210406)
  • 摘要: 为了揭示织物结构和开孔位置对三维机织复合材料开孔连接性能与失效机制的影响,设计并制备了3种不同结构的三维机织复合材料,对不同开孔位置连接结构的承载性能和损伤模式进行了研究。研究表明,端径比(E/D)对不同结构参数的复合材料的影响存在差异,当E/D从3减小到2时,3种结构复合材料极限挤压强度分别下降5.3%、9.9%和5.9%;E/D从2减小到1时,极限挤压强度分别下降73.3%、68.9%和69.8%。E/D从3减小到1时,复合材料的损伤模式由挤压损伤转变为界面脱粘及试样端部纱线脱粘,结构中各纱线层的损伤演化呈现明显角度特征。

     

  • 图  1  三维机织预制体结构及RTM成型示意图:(a) MW3D-I;(b) MW3D-II;(c) MW3D-III;(d) RTM工艺流程;(e) 下模;(f) 整体模具

    Figure  1.  Schematic diagram of 3D woven preforms and RTM process: (a) MW3D-I; (b) MW3D-II; (c) MW3D-III; (d) RTM process flow;(e) Lower plate; (f) RTM mold

    图  2  开孔试样示意图

    Figure  2.  Schematic diagram of open-hole specimen

    图  3  开孔连接试验夹具示意图

    Figure  3.  Schematic diagram of the test fixture for composites joints

    图  4  三维机织复合材料连接试验过程

    Figure  4.  Experimental process of 3DWC joints

    图  5  不同结构三维机织复合材料连接结构载荷-位移曲线

    Figure  5.  Load-displacement curves of 3DWCs joints with different fabric structures

    图  6  三维机织复合材料连接结构试样表面高度分布状态

    Figure  6.  Surface height distribution of 3DWCs joint specimens

    图  7  不同端径比三维机织复合材料连接结构载荷-位移曲线

    Figure  7.  Load-displacement curves of 3DWCs joints with different edge/diameter ratios

    图  8  三维机织复合材料开孔接连接强度

    Figure  8.  Strength of 3DWC joints

    图  9  三维机织复合材料连接结构损伤形貌

    Figure  9.  Damage morphology of 3DWC joints

    图  10  MW3D-Ⅲ开孔损伤形态CT扫描图

    Figure  10.  CT scan of open hole damage morphology of MW3D-Ⅲ

    表  1  材料性能参数

    Table  1.   Parameters of material properties

    Yarn specification Density/(g·cm−3) Yarn linear density/tex Tensile strength/MPa Tensile modulus/GPa Breakage elongation/%
    TG800HX-12K 1.8 500 5678 290 2.32
    TG800HX-6K 1.8 250 5678 290 2.32
    TDE86 1.2 / 80 3.5 /
    下载: 导出CSV

    表  2  三维机织复合材料结构参数

    Table  2.   Structural parameter of 3D woven composites

    No. Fabric Structure Yarn linear density/tex Fabric density/(tows·cm−1) Thickness/
    mm
    Fiber volume
    frction/%
    Warp/
    Bias yarn
    Weft Binder yarn Warp Weft Bias yarn
    MW3D-Ⅰ [90°/0°/90°/0°/90°/
    0°/90°/0°/90°]
    1000 1000 250 4 4 4 4.27 54.63
    MW3D-Ⅱ [90°/45°/−45°/90°/
    −45°/45°/90°]
    1000 1000 250 4 4 4 3.85 54.73
    MW3D-Ⅲ [90°/45°/0°/−45°/90°/
    −45°/0°/45°/90°]
    1000 1000 250 4 4 4 4.73 54.20
    下载: 导出CSV

    表  3  开孔连接试样尺寸

    Table  3.   Dimensions of composites joints

    No. Length
    L/mm
    Width
    W/mm
    E/mm Aperture
    D/mm
    W/D E/D
    A 135 36 18 6 6 3
    B 135 36 12 6 6 2
    C 135 36 6 6 6 1
    下载: 导出CSV

    表  4  三维机织复合材料开孔连接极限载荷

    Table  4.   Maximum loads of the 3D woven composites opening joint

    No.A(E/D=3)/kNB(E/D=2) /kNC(E/D=1) /kN
    MW3D-Ⅰ12.59(±0.87)11.19(±0.44)3.89(±0.23)
    MW3D-Ⅱ11.23(±1.30)10.84(±1.18)4.33(±0.29)
    MW3D-Ⅲ15.61(±0.56)15.24(±0.48)5.38 (±0.27)
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-10-31
  • 修回日期:  2023-12-08
  • 录用日期:  2023-12-11
  • 网络出版日期:  2023-12-25

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