| 缝合连接三维编织复合材料拉伸性能试验研究 |
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| 引用本文： | 焦亚男,李嘉禄,韩雪梅,孙其永.缝合连接三维编织复合材料拉伸性能试验研究[J].复合材料学报,2008,25(1):127-132. |
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| 作者姓名： | 焦亚男 李嘉禄 韩雪梅 孙其永 |
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| 作者单位： | 1. 天津工业大学,复合材料研究所,天津市和教育部共建先进纺织复合材料重点实验室,天津,300160
2. 天津市核工业理化工程研究院,天津,300172 |
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| 基金项目： | 天津市科技攻关项目（043104711） |
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| 摘 要： | 研究了多种缝合方向、 搭接长度和缝合密度对缝合连接三维编织复合材料拉伸性能的影响 , 并与三维整体编织复合材料的拉伸性能进行对比。结果表明: 缝合连接三维编织复合材料与三维整体编织复合材料相比 ,拉伸强度下降了 25 %～50 % , 初始模量下降了 35 %～55 %; 搭接长度对拉伸强度和模量的影响较大 , 拉伸性能随搭接长度的增加呈现先增大后减小的特征 , 当搭接长度与试件宽度的比值在 2. 5 左右时 , 试件的拉伸性能较好 ,与未缝合的三维整体编织试件相比 , 仅下降了 25 %; 相对而言 , 中密度缝合试件的拉伸性能最优 ; 缝合方向对试件拉伸性能的影响不明显。
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| 关 键 词： | 缝合连接 编织复合材料 搭接长度 拉伸性能 强度 模量 |
| 文章编号： | 1000-3851（2008）01-0127-06 |
| 收稿时间： | 2007-03-30 |
| 修稿时间： | 2007-06-06 |
Experimental investigation on tensile property of stitching joint 3D braided composites |
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| JIAO Yanan,LI Jialu,HAN Xuemei,SUN Qiyong.Experimental investigation on tensile property of stitching joint 3D braided composites[J].Acta Materiae Compositae Sinica,2008,25(1):127-132. |
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| Authors: | JIAO Yanan LI Jialu HAN Xuemei SUN Qiyong |
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| Affiliation: | (1 Tianjin and Minist ry of Education Key Laboratory of Advanced Textile Composite Materials, Institute of Textile
Composites, Tianjin Polytechnic University, Tianjin 300160, China ;2. Tianjin Research Institute of Physical and Chemical Engineering of Nuclear Indust ry| Tianjin 300172, China) |
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| Abstract: | The stitching joint 3D braided composites with various stitching direction , lap length and stitching densi2
ty were experimentally studied to reveal the effect of stitching parameters on the tensile property. The tensile prop2erty of the stitching joint 3D braided composites was compared with that of 3D integral braided composites. The re2 sult s indicate that the tensile st rength and modulus of the stitching joint 3D braided composites are lower than those of 3D integral braided composites. The tensile st rength reduces about 25 %～50 % , and the initial modulus decreases 35 %～55 %. The tensile st rength and modulus are influenced by the lap length greatly. The tensile property of the composites shows the character , which the tensile property increases earlier , and then falls with the lap length increasing. When the ratio of lap length to width of the sample is about 2. 5 , the tensile property of the stitching joint 3D braided composites is bet ter , only a decrease of 25 %. The tensile property of the middle stitching density is bet ter comparatively. However the tensile property has no notable change with the stitching direction. |
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| Keywords: | stitching joint braided composites lap length tensile property strength modulus |
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