Effects of Cyclic Loading on Strain Distribution Uniformity of Unidirectional CMCs

被引：0
|
作者：
Yang C.-C. [1 ,2 ]
Gao X.-G. [1 ,2 ]
Yu G.-Q. [1 ,2 ]
Song Y.-D. [1 ,2 ,3 ]
机构：
[1] Key Laboratory of Aero-Engine Thermal Environment and Structure, Ministry of Industry and Information Technology, College of Energy and Power Engineering, Nanjing
[2] Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing
[3] State Key Laboratory of Mechanics and Control Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing
来源：
Gao, Xi-Guang (gaoxiguang@nuaa.edu.cn) | 2018年 / Journal of Propulsion Technology卷 / 39期
关键词：
Ceramic matrix composite; Cyclic loading; Digital image correlation; Strain distribution;
D O I：
10.13675/j.cnki.tjjs.2018.11.024
中图分类号：
学科分类号：
摘要：
The digital image correlation (DIC) technique was applied to the tensile test of unidirectional C/SiC composites to investigate the strain field distribution. The characteristic of strain field and the effects of cyclic loading on strain field uniformity were discussed. The results show that the non-linear macroscopic tensile stress-strain curve can be divided into three stages. During the first linear stage, the strain field shows dot-type distribution which centered on the initial imperfections of the material. After that the stress-strain curve turns into non-linear stage with the increase of the load due to the evolution of matrix cracking, and the strain distribution shows inhomogeneity. Finally, the strain field shows equispaced band-type distribution which corresponds to matrix cracks. In this stage, the stress-strain curve turns into linear again. The cyclic loading makes strain distributions scattered at the beginning of uniaxial tension test. However, the strain field becomes more uniform with the increase of the average strain. © 2018, Editorial Department of Journal of Propulsion Technology. All right reserved.
引用
收藏
页码：2601 / 2607
页数：6
相关论文
共 28 条
  • [1] Naslain R., Design, Preparation and Properties of Non-Oxide CMCs for Application in Engines and Nuclear Reactors: an Overview, Composites Science and Technology, 64, 2, pp. 155-170, (2004)
  • [2] Beyer S., Schmidt S., Cahuzac G., Et al., Advanced Ceramic Matrix Composite Materials for Current and Future Propulsion System Applications, AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, (2004)
  • [3] Dicarlo J.A., Van Roode M., Ceramic Composite Development for Gas Turbine Engine Hot Section Components, (2006)
  • [4] Stephen T., General Electric Primes CMC for Turbine Blades
  • [5] Zhang L.T., Cheng L.F., Luan X.G., Et al., Environmental Performance Testing System for Thermostructure Materials Applied in Aeroengines, Key Engineering Materials, 313, pp. 183-190, (2006)
  • [6] Wang H.-Q., He G.-Q., Liu P.-J., Et al., Optimized Design on a New Type Thermal Structure of Scramjet Combustor, Journal of Propulsion Technology, 30, 3, (2009)
  • [7] Li Z.-Y., Zheng R.-H., Li L.-H., Et al., A Study on Ablation Behavior of Needled C/SiC Composite Nozzle for Ramjet, Journal of Propulsion Technology, 34, 7, pp. 956-961, (2013)
  • [8] Li Z.-Y., Zheng R.-H., Li L.-H., Et al., Investigation on Bearing Failure of Ramjet C/SiC Nozzle, Journal of Propulsion Technology, 34, 4, pp. 545-550, (2013)
  • [9] Evans A.G., Zok F.W., Mcmeeking R.M., Fatigue of Ceramic Matrix Composites, Acta Metallurgica Et Materialia, 43, 3, pp. 859-875, (1995)
  • [10] Mall S., Engesser J.M., Effects of Frequency on Fatigue Behavior of CVI C/SiC at Elevated Temperature, Composites Science and Technology, 66, 7-8, pp. 863-874, (2006)
123