| 混杂纤维增韧SiC基复合材料的强度分布 |
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| 引用本文： | 刘善华,张立同,刘永胜,殷小玮,成来飞,李辉,孟志新.混杂纤维增韧SiC基复合材料的强度分布[J].固体火箭技术,2012,35(3):410-413. |
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| 作者姓名： | 刘善华 张立同 刘永胜 殷小玮 成来飞 李辉 孟志新 |
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| 作者单位： | 西北工业大学超高温结构复合材料重点实验室,西安,710072 |
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| 摘 要： | 以采用化学气相渗透法(CVI)制备的SiC纤维和C纤维混杂增韧SiC基复合材料((SiC-C)/SiC)的弯曲强度数据为依据,以Weibull分布为假设,采用图解法结合逐步回归优选法进行参数估计,并采用Kolmogorov-Smirnov法对(SiC-C)/SiC复合材料的强度分布进行假设检验。结果表明,(SiC-C)/SiC复合材料的强度统计服从Weibull分布。依据获得Weibull分布函数预测(SiC-C)/SiC的强度值与实验值偏差仅为0.19%,复合材料强度可靠性较好。
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| 关 键 词： | (SiC-C)/SiC复合材料 弯曲强度 Weibull分布 Kolmogorov检验 |
Strength distribution of hybrid fibers reinforced SiC matrix composite |
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| LIU Shan-hua
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ZHANG Li-tong
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LIU Yong-sheng
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YIN Xiao-wei
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CHEN Lai-fei
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LI Hui
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MEN Zhi-xin.Strength distribution of hybrid fibers reinforced SiC matrix composite[J].Journal of Solid Rocket Technology,2012,35(3):410-413. |
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| Authors: | LIU Shan-hua ZHANG Li-tong LIU Yong-sheng YIN Xiao-wei CHEN Lai-fei LI Hui MEN Zhi-xin |
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| Institution: | LIU Shan-hua,ZHANG Li-tong,LIU Yong-sheng,YIN Xiao-wei,CHEN Lai-fei,LI Hui,MEN Zhi-xin(Key Laboratory of Thermo-Structure Composite Materials,Northwestern Polytechnical University,Xi’an 710072,China) |
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| Abstract: | Based on the flexural strength of 3D(SiC-C)/SiC composite in which SiC matrix was reinforced by hybrid SiC fiber and carbon fiber fabricated by chemical vapor deposition process(CVI),assumed by the Weibull distribution,the strength distribution of(SiC-C)/SiC composite was studied by a graphical method and stepwise regression method to optimize the estimated parameters,The Kolmogorov-Smirnov test method was used to examine the supposed distribution.The results show that the strength of(SiC-C)/SiC obeys Weibull distribution.The deviation was only 0.19% between the test value and predicated date obtained by function of Weibull distribution,which indicate that the composite possesses perfect strength reliability. |
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| Keywords: | (SiC-C)/SiC composite flexural strength weibull distribution Kolmogorov-Smirnov test |
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