陶瓷基复合材料拉伸试验声发射与固有频率分析
Natural Frequency and Acoustic Emission Test Analysis of Ceramic Matrix Composites Monotonic Tensile

DOI: 10.12677/OJAV.2020.81003, PP. 17-25

Keywords: 陶瓷基复合材料，声发射技术，固有频率
Ceramic Matrix Composite, Monotonic Tensile Test, Acoustic Emission Technique

Full-Text   Cite this paper   Add to My Lib

Abstract:

对陶瓷基复合材料试样进行了单调拉伸试验固有频率和声发射试验分析。得到了在拉伸过程中试样的固有频率变化趋势，同时绘制拉伸过程中应力–时间曲线及声发射信号随时间变化曲线。计算得到了陶瓷基复合材料结构的声发射信号的频谱图，针对声发射频谱图，分析得到了结构在单调拉伸试验过程损伤过程存在五个阶段，并详细分析了结构每阶段损伤变化情况。
Natural frequencies and sound emission tests of ceramic matrix composites in the monotone tension were analyzed. The variation trend of the natural frequency of the sample during the tensile process was obtained. According to the test, the stress-time curve and the curve of AE signal changing with time were drawn. The spectrum diagram of acoustic emission signal was calculated, and for the acoustic emission spectrum diagram of ceramic matrix composite structure, five damage stages existed in the monotone tensile test, and the damage changes in each stage were analyzed in detail.

References

[1]	Chen, X.M., Chen, L., Zhang, C.Y., et al. (2016) Three-Dimensional Needle-Punching for Composites—A Review. Composites Part A: Applied Science and Manufacturing, 85, 12-30. https://doi.org/10.1016/j.compositesa.2016.03.004
[2]	Bilisik, K. (2012) Three-Dimensional Braiding for Com-posites: A Review. Textile Research Journal, 83, 1414-1436. https://doi.org/10.1177/0040517512450766
[3]	赵文政, 李敏, 张燕南, 等. 复合材料损伤过程声发射信号聚类分析与压缩变形测量[J]. 复合材料学报, 2018(6): 5-9.
[4]	黄喜鹏, 王波, 杨成鹏, 等. 基于声发射信号的三维针刺C/Si C复合材料拉伸损伤演化研究[J]. 无机材料学报，2018(33): 609-616.
[5]	黄喜鹏, 王波, 杨成鹏, 等. 基于声发射信号的不同密度C/SiC复合材料损伤演化[J]. 复合材料学报, 2018, 36(2): 425-433.
[6]	姜河, 郑波. 帽型复合材料梁的稳定性分析与固有频率计算[J]. 玻璃钢/复合材料, 2015(6): 64-68.
[7]	钱若力, 陈兴华, 卿光辉. 基于无网格方法的复合材料层合板固有频率及特征值灵敏度分析[J]. 船舶力学, 2012, 16(7): 820-828.

Full-Text