| 三维编织C/SiC复合材料剪切和弯曲性能的实验研究 |
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| 引用本文： | 王波,矫桂琼.三维编织C/SiC复合材料剪切和弯曲性能的实验研究[J].机械强度,2007,29(1):44-47. |
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| 作者姓名： | 王波 矫桂琼 |
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| 作者单位： | 西北工业大学,工程力学系,西安,710072 |
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| 摘 要： | 对三维编织C/SiC复合材料进行剪切试验和两种弯曲试验,得到材料的剪切性能和弯曲性能以及相应的失效规律.在剪切试验中发现两种剪切试验的剪切模量相差较大,但由于两种剪切的破坏面相同,所以剪切强度相差不大.通过分析得到由两种弯曲试验获得的弯曲模量不同的原因.通过分析还得到拉压模量不同的材料的四点弯曲模量计算公式,发现计算值在试件上下表面应变相差不大时与均质材料的计算结果相差不大.
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| 关 键 词： | C/SiC 三维编织 复合材料 实验研究 三维编织 复合材料 剪切强度 弯曲性能 实验 研究 BRAIDED EXPERIMENTAL INVESTIGATION BENDING SHEAR 结果 计算值 均质材料 应变相 上下表面 试件 计算公式 拉压模量不同 弯曲模量 分析 |
| 修稿时间： | 2005-07-272005-09-30 |
SHEAR AND BENDING EXPERIMENTAL INVESTIGATION OF THREE DIMENSIONALLY BRAIDED C/SiC COMPOSITES |
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| WANG Bo,JIAO GuiQiong.SHEAR AND BENDING EXPERIMENTAL INVESTIGATION OF THREE DIMENSIONALLY BRAIDED C/SiC COMPOSITES[J].Journal of Mechanical Strength,2007,29(1):44-47. |
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| Authors: | WANG Bo JIAO GuiQiong |
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| Abstract: | Shear and bending tests were conducted for three-dimensionally braided C/SiC composites and shear properties and bending properties were gotten from experiments. It is found that two shear moduli are different and two shear strength are almost equal. The reason of differences between three point bending modulus and four point bending modulus is also analyzed. A formula is deduced to calculate the bending modulus while strains of up and down surfaces are different. It is found that there is little difference between previous formula and the common formula when strains of up and down surface are almost the same. |
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| Keywords: | C/SiC Three dimensional braid Ceramic matrix composites (CMC) Experimental investigation |
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