Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (05): 79-84.doi: 10.13475/j.fzxb.20190507806

• Textile Engineering • Previous Articles     Next Articles

Compression property of notched 3-D braided composites

LIANG Shuangqiang1, CHEN Ge1,2(), ZHOU Qihong1   

  1. 1. College of Mechanical Engineering, Donghua University, Shanghai 201620, China
    2. College of Textile and Clothing, Xinjiang University, Urumqi, Xinjiang 830000, China
  • Received:2019-05-29 Revised:2020-02-15 Online:2020-05-15 Published:2020-06-02
  • Contact: CHEN Ge E-mail:chenge@dhu.edu.cn

RichHTML

4

PDF (PC)

85

Abstract:

In order to study the open-hole notch effect on compression properties of three dimensional (3-D) braided composites, two types of 3-D braided specimens with ±12° braiding angles were fabricated and tested. One was a purely braided structure, and the other was made by incorporating 58% braiding yarns and 42% longitudinal lay-in yarns. According to relevant standards, quasi-static compression tests of composite specimens with and without notch were carried out respectively, and the results of which were compared with that of laminates. The results show that the compression strength of the two types of 3-D braided composites is very similar, but the pure 3-D braided structure with open holes can retain higher proportion of compression strength. Compared with laminated composites, both types of 3-D braided composites retain to show a higher proportion of compression strength. With regard to the failure behavior under compression loading, the two types of 3-D braided composites are also similar, the specimens fail in shear, showing transverse fracture without delamination.

Key words: 3-D braided composite, open-hole notch, compression strength, axial yarn

CLC Number: 

  • TB332

Tab.1

Properties of matrix and carbon fiber"

材料 弹性模量/GPa 拉伸强度/MPa 应变/%
基体 2.74 51 3.6
AS4-6 K碳纤维 231 4 447 1.7

Fig.1

Geometry and dimensions of specimen. (a) Un-notched coupon; (b) Open-hole coupon"

Fig.2

Photographs of cross-sectional areas of 3-D braided composite. (a) Section of test piece 1(×10);(b) Section of test piece 2(×50)"

Fig.3

Support fixture for open-hole test. (a) Fixture assembly; (b) Fixture installation for notched compression testing"

Fig.4

IITRI test equipment. (a) Fixture installation for un-notched compression testing; (b) Un-notched specimen assembly"

Fig.5

Load-Displacement curves of un-notched 3-D braided composites under quasi-static compressive"

Fig.6

Quasi-static compression tests of 3D braided composite with open hole: Load vs. Displacement curves"

Tab.2

Compressive properties"

试验件 试验件
编号		 横截面积/
mm2		 纤维
体积比/
%		 失效载荷/
kN		 强度/
MPa
开孔
试验件		 Style I-22 74.7 59 25.4 340.50
Style I-23 74.6 59 28.8 385.70
Style I-24 74.8 59 29.7 396.80
Style I-25 71.2 59 24.8 348.20
Style II-8 75.4 62 31.3 415.19
Style II-9 75.5 62 28.0 371.00
Style II-10 76.6 62 33.0 431.70
无开
孔试
验件		 Style I-01 71.8 59 36.9 513
Style I-12 72.8 59 48.3 663
Style I-13 72.3 59 42.3 585
Style I-17 71.8 59 42.6 593
Style II-04 71.8 62 40.1 558
Style II-05 72.2 62 43.9 608
Style II-06 72.5 62 45.0 621

Tab.3

Comparison of compressive properties"

试验件 无开孔
强度/MPa		 含开孔
强度/MPa		 模量/
GPa		 无缺陷失效
应变/%		 强度
保留/%
Style I 589 368 54.75 1.09 62.5
Style II 596 406 49.00 1.20 68.0

Fig.7

Comparison of compression properties of two type 3-D braided composites with laminates"

Fig.8

Photographs of un-notched specimens after compression test"

Fig.9

Photographs of Notched specimens after compression tests"

Fig.10

Fracture crack"

Fig.11

Fracture surface of specimen after compression tests. (a) Open hole; (b) Without hole"

Fig.12

SEM images of fracture surface of Style II"

[1] 陈利, 赵世博, 王心淼. 三维纺织增强材料及其在航空航天领域的应用[J]. 纺织导报, 2018(S1):80-87.
CHEN Li, ZHAO Shibo, WANG Xinmiao. Development and Application of 3D Textile reinforcement in the aerospace filed[J]. China Textile Leader, 2018(S1):80-87.
[2] GAUSE L W, ALPER J M. Structural properties of braided graphite/epoxy composites[J]. Journal of Composites, Technology and Research, 1987,9(4):141-150.
[3] KO F. Tensile strength and modulus of a three-dimensional braided composite[C]// WHITNEY J. In composite materials: testing and design (seventh conference). Philadelphia: ASTM International, 1986: 392-403.
[4] CARVALLI V. Quasi-static and fatigue tensile behavior of a 3D rotary braided carbon/epoxy composite[J]. Journal of Composite Materials, 2012,47(25):3195-3209.
[5] 张迪, 郑锡涛, 杨超. 三维编织复合材料损伤容限性能试验[J]. 复合材料学报, 2016,33(5):1048-1054.
ZHANG Di, ZHENG Xitao, YANG Chao. Damage tolerance property tests of 3D braided composites[J]. Acta Materiae Compositae Sinica, 2016,33(5):1048-1054.
[6] 刘谦, 李嘉禄, 李学明, 三维编织复合材料的弯曲和压缩性能探讨研究[J]. 材料工程, 2000(8):3-6.
LIU Qian, LI Jialu, LI Xueming. Research of bending and compression properties of 3-D braided composite materials[J]. Jounal of Materials Engineering, 2000(8):3-6.
[7] 严实, 吴林志, 孙雨果. 三维四向编织复合材料压缩力学性能实验研究[J]. 材料工程, 2007(7):59-62.
YAN Shi, WU Zhilin, SUN Yuguo, Experimental investigation compressive mechanical properties of 3D 4-directional braided composites[J]. Jounal of Materials Engineering, 2007(7):59-62.
[8] 徐焜, 许希武, 汪海. 三维六向编织复合材料力学性能的实验研究[J]. 复合材料学报, 2005,22(6):144-149.
XU Kun, XU Xiwei, WANG Hai. Experimental investigation of the mechanical properties of 3D 6-directional braided composites[J]. Acta Materiae Compositae Sinica, 2005,22(6):144-149.
[9] 卢子兴, 胡奇. 三维编织复合材料压缩力学性能的实验研究[J]. 复合材料学报, 2003,20(6):67-72.
LU Zixing, HU Qi. Experimental investigation into the compressive mechanical properties of three dimensional braided composite[J]. Acta Materiae Composite Sinica, 2003,20(6):67-72.
[10] 李典森, 刘子仙, 卢子兴, 等. 三维五向炭纤维/酚醛编织复合材料的压缩性能及破坏机制[J]. 复合材料学报, 2008,25(1):133-139.
LI Diansen, LIU Zixian, LU Zixing, et al. Compressive properties and failure mechanism of three dimensional and five directional carbon fiber/phenolic braided composites[J]. Acta Materiae Compositae Sinica, 2008,25(1):133-139.
[11] WU L W, ZHANG F, SUN B, et al. Finite element analyses on three-point low-cyclic bending fatigue of 3-D braided composite materials at microstructure level[J]. International Journal of Mechanical Sciences, 2014,84:41-53.
doi: 10.1016/j.ijmecsci.2014.03.036
[12] SUN B Z, LI UR, GU B H. Numerical simulation of three-point bending fatigue of four-step 3-D braided rectangular composite under different stress levels from unit-cell approach[J]. Computational Materials Science, 2012(5):239-246.
[13] 曹海建, 钱坤, 徐文新, 等. 三维全五向编织复合材料的压缩性能[J]. 纺织学报, 2013,34(8):68-73.
CAO Haijian, QIAN Kun, XU Wenxin, et al. Compressive properties of three-dimensional full five-directional braided composites[J]. Journal of Textile Research, 2013,34(8):68-73.
[14] WANG J, CALLUS P, BANNISTER M. Experimental and numerical investigation of the tension and compression strength of un-notched and notched quasi-isotropic laminates[J]. Composite Structures, 2004,64(3/4):297-306.
[1] FENG Duanpei, SHANG Yuanyuan, LI Jun. Multi-scale simulation of impact failure behavior for 4- and 5-directional 3-D braided composites [J]. Journal of Textile Research, 2020, 41(10): 67-73.
[2] . Strain sensing characteristics of carbon nanoyarns embedded in three-dimensional braided composites [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(01): 11-18.
[3] LIAN jun;GU Bohong. Numerical simulation of dynamic performance of three-dimensional braided composites [J]. JOURNAL OF TEXTILE RESEARCH, 2011, 32(1): 41-45.
[4] WAN Zhen-kai;WANG Zhan-gang. Research on flaw detection for composite material using ultrasonic testing based on neural network [J]. JOURNAL OF TEXTILE RESEARCH, 2010, 31(2): 54-59.
[5] WAN Zhenkai;WANG Zhangang. Electrical characteristics of composite material under loading based on SQUID technology [J]. JOURNAL OF TEXTILE RESEARCH, 2010, 31(1): 58-63.
[6] JIAO Ya′nan;LI Jialu;HAN Xuemei. Design and destroying mechanism of stitching joint 3-D braided composites [J]. JOURNAL OF TEXTILE RESEARCH, 2008, 29(6): 48-51.
[7] WEI Ming-sen;JI Tao. Elastic modulus of 3D braided composites containing axial yarns [J]. JOURNAL OF TEXTILE RESEARCH, 2006, 27(9): 65-67.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
京ICP备14006648号
Copyright 2021 © Editorial office of Journal of Textile Research
Supported by Beijing Magtech Co.Ltd