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

开孔位置对三维机织复合材料连接性能的影响

张一帆^{1, 2},
史志伟^{1, 2},
张茜^{1, 2},
刘燕峰³,
张代军³,
陈利^{1, 2, ,}

1.
天津工业大学　先进纺织复合材料教育部重点实验室, 天津 300387
2.
天津工业大学　纺织科学与工程学院, 天津 300387
3.
中国航发北京航空材料研究院先进复合材料国防科技重点实验室, 北京 100095

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
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- 文章访问数: 121
- HTML全文浏览量: 43
- 被引次数: 0
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

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

ZHANG Yifan^{1, 2},
SHI Zhiwei^{1, 2},
ZHANG Qian^{1, 2},
LIU Yanfeng³,
ZHANG Daijun³,
CHEN Li^{1, 2
, ,}

1.
Key Laboratory of Advanced Textile Composite materials, Ministry of Education, Tiangong University, Tianjin 300387, China
2.
College of Textile Science and Engineering, Tiangong University, Tianjin 300387, China
3.
AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China

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

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。
- 三维机织复合材料 /
- 多轴向 /
- 开孔位置 /
- 力学性能 /
- 失效机制
Abstract: To reveal the effect of opening position on pinned-joints mechanical properties and failure mechanism of 3D woven composites, three different 3D woven composite structures were designed and prepared, and the load-bearing performance and damage modes of these composites with different opening positions was discussed. The results shows that there are differences in the effect of end-diameter ratio (E/D) on composites with different structural parameters. When the E/D decreases from 3 to 2, the ultimate compressive strength of three structural composites decreases by 5.3%, 9.9%, and 5.9%, respectively. When the E/D decreases from 2 to 1, the ultimate compressive strength decreases by 73.3%, 68.9%, and 69.8%, respectively. When the E/D changes from 3 to 1, the damage mode of the composites changes from extrusion damage to interfacial debonding, and the damage propagation of each yarn layer presents obvious angle features.
- 3D woven composites /
- multiaxial /
- opening position /
- mechanical properties /
- failure mechanism

HTML全文

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

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图 2 开孔试样示意图

Figure 2. Schematic diagram of open-hole specimen

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图 3 开孔连接试验夹具示意图

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

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图 4 三维机织复合材料连接试验过程

Figure 4. Experimental process of 3DWC joints

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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

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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

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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

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图 8 三维机织复合材料开孔接连接强度

Figure 8. Strength of 3DWC joints

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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

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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

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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	/

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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/%
No.	Fabric Structure	Warp/ Bias yarn	Weft	Binder yarn	Warp	Weft	Bias yarn	Thickness/ mm	Fiber volume frction/%
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

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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

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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)/kN	B(E/D=2) /kN	C(E/D=1) /kN
MW3D-Ⅰ	12.59(±0.87)	11.19(±0.44)	3.89(±0.23)
MW3D-Ⅱ	11.23(±1.30)	10.84(±1.18)	4.33(±0.29)
MW3D-Ⅲ	15.61(±0.56)	15.24(±0.48)	5.38 (±0.27)

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