| 2D C/SiC 复合材料的静压痕力的损伤表征 |
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| 引用本文： | 徐红瑞,成来飞,梅辉.2D C/SiC 复合材料的静压痕力的损伤表征[J].航空学报,2012,33(8):1547-1553. |
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| 作者姓名： | 徐红瑞 成来飞 梅辉 |
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| 作者单位： | 西北工业大学 材料学院, 陕西 西安 710072 |
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| 基金项目： | 国家自然科学基金青年项目，西北工业大学基础研究基金 |
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| 摘 要： | 为考察2D C/SiC 复合材料在外力作用下产生的不可见损伤对其力学性能的影响。通过静压痕实验引入损伤,采用红外热波成像和残余性能测试的方法,表征2D C/SiC 复合材料的损伤。结果表明:施加能量为0.75 J时,复合材料内部开始产生损伤, 施加能量为1.8 J(接触力1 700 N、压痕深1 mm)时,损伤模式发生转变;随着损伤程度的加重,残余压缩强度下降率约为残余拉伸强度下降率的2倍。
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| 关 键 词： | 静压痕 施加能量 压痕 损伤阻抗 损伤容限 |
| 收稿时间： | 2011-10-11; |
| 修稿时间： | 2011-11-08 |
The Characterization of Indentation of 2D C/SiC Composites Subjected to Quasi-static Indentation |
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| XU Hongrui
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CHENG Laifei
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MEI Hui.The Characterization of Indentation of 2D C/SiC Composites Subjected to Quasi-static Indentation[J].Acta Aeronautica et Astronautica Sinica,2012,33(8):1547-1553. |
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| Authors: | XU Hongrui CHENG Laifei MEI Hui |
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| Institution: | School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China |
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| Abstract: | In order to examine the mechanical properties of 2D C/SiC composites with invisible damages induced by external forces,this paper employed thermal imaging testing and residual strength testing to characterize the damage of 2D C/SiC composites induced by quasi-static indentation(QSI).The results indicated that when the energy applied reached 0.75 J,damage started to occur inside the composites;above 1.8 J(the contact force was above 1 700 N,and the depth reached 1 mm),the damage mode transformed.With the aggravation of the damage,the decreasing rate of residual compressive strength was nearly 2 times higher than that of the residual tensile strength. |
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| Keywords: | quasi-static indentation loaded energy indentation damage resistance damage tolerance |
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