2D C/SiC 复合材料的静压痕力的损伤表征

材料工程与机械制造

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2D C/SiC 复合材料的静压痕力的损伤表征

徐红瑞, 成来飞, 梅辉

西北工业大学材料学院, 陕西西安 710072

收稿日期:2011-10-11 修回日期:2011-11-08 出版日期:2012-08-25 发布日期:2012-08-23
通讯作者: 成来飞 E-mail:chenglf@nwpu.edu.cn
基金资助:
国家自然科学基金青年项目(50902112);西北工业大学基础研究基金(NPU-FFR-JC201135)

The Characterization of Indentation of 2D C/SiC Composites Subjected to Quasi-static Indentation

XU Hongrui, CHENG Laifei, MEI Hui

School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China

Received:2011-10-11 Revised:2011-11-08 Online:2012-08-25 Published:2012-08-23
Supported by:
National Natural Science Foundation Young Program China(50902112);Technology Development Program of NWPU(NPU-FFR-JC201135)

摘要/Abstract

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。

关键词: 静压痕, 施加能量, 压痕, 损伤阻抗, 损伤容限

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.

Key words: quasi-static indentation, loaded energy, indentation, damage resistance, damage tolerance

中图分类号:

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.

XU Hongrui, CHENG Laifei, MEI Hui. The Characterization of Indentation of 2D C/SiC Composites Subjected to Quasi-static Indentation[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2012, 33(8): 1547-1553.

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E-mail：hkxb@buaa.edu.cn

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2D C/SiC 复合材料的静压痕力的损伤表征

The Characterization of Indentation of 2D C/SiC Composites Subjected to Quasi-static Indentation

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