| C/SiC复合材料残余应力的电火花小孔法测定研究 |
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| 引用本文： | 于坤,张长瑞,曹英斌,刘荣军. C/SiC复合材料残余应力的电火花小孔法测定研究[J]. 国防科技大学学报, 2009, 31(2): 31-35 |
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| 作者姓名： | 于坤 张长瑞 曹英斌 刘荣军 |
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| 作者单位： | 国防科技大学,航天与材料工程学院,湖南,长沙,410073 |
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| 摘 要： | 进行了C/SiC复合材料残余应力的小孔法表征.基于现有小孔法的不足以及材料的较好电导率,提出了电火花打孔法的残余应力测量方法,建立了相应的残余应力测量流程.进行了不同平整表面样品的残余应力测量.结果表明电火花打孔法具有较好的区分性,也表明C/SiC复合材料具有较小的本征残余应力和机加工应力,这说明:C/SiC复合材料作为反射镜材料具有很好的面形稳定性的优势.
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| 关 键 词： | 电火花方法 残余应力测量 小孔法 C/SiC复合材料 |
| 收稿时间： | 2008-12-23 |
A Study of Residual Stresses on Short Carbon Fiber Enhanced Silicon Carbide Composites |
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| YU Kun,ZHANG Changrui,CAO Yingbin and LIU Rongjun. A Study of Residual Stresses on Short Carbon Fiber Enhanced Silicon Carbide Composites[J]. Journal of National University of Defense Technology, 2009, 31(2): 31-35 |
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| Authors: | YU Kun ZHANG Changrui CAO Yingbin LIU Rongjun |
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| Affiliation: | College of Aerospace and Material Engineering;National Univ.of Defense Technology;Changsha 410073;China |
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| Abstract: | Feasibility of hole-drilling method for the measurement of residual stresses in short carbon fiber enhanced silicon carbide(C/SiC) composites was studied.Based on the disadvantage of conventional hole-drilling method and good electric conductance of high-hardness C/SiC composite,electric sparkle method(ESM),an alternative method,was presented and proved suitable.Then an experimental procedures for residual stresses of C/SiC composites were established.Finally the established ESM method was used for the meas... |
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| Keywords: | electric sparkle method measurement of residual stresses hole-drilling method C/SiC composites |
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