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Effect of five kinds of pores shape on thermal stress properties of thermal barrier coatings by finite element method
Yang, Ming1,2; Zhu, Yongping1; Wang, Xueying1; Guo, Shengnan1; Hu, Jing1; Zhao, Lili1; Chu, Ying1
2017-09-01
发表期刊CERAMICS INTERNATIONAL
ISSN0272-8842
卷号43期号:13页码:9664-9678
摘要

Thermal ablation is a very important technique to characterize the thermal properties of coating systems. On account of the concentration of thermal stress, thermal barrier coatings (TBCs) often break off from the substrate partly or completely during the thermal erosion. In this paper, the thermal erosion simulation of finite element geometric models based on the possible pore shapes were implemented, especially, the influence of pore shapes on the distribution of coating temperature, X component of stress, Y component of stress, XY-shear stress and von-Mises stress were focused on. The effects of the different porosity of square pore coatings on thermal insulation properties and thermal stresses were discussed in term of the simulation results. The simulation results indicate that different shape pores not only affect the thermal stress distribution above the contact area between the bond coating and top coating surface, but also affect the plastic deformation behavior of TBCs. The micromechanism was discussed in details in this study. The computed results verified that, the computational method can successfully predict thermal shear, crack initiation and normal failure mode of the studied TBCs. All the results are in good agreement with the corresponding experimental findings. The failure mechanism factors in this paper are of great importance to explain the failure micro-mechanism of TBCs.

关键词Shaping Thermal Stress Failure Analysis Finite Element Method
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.ceramint.2017.04.139
收录类别SCI
语种英语
关键词[WOS]SIMULATION ; MICROSTRUCTURE ; BEHAVIOR ; TBCS
WOS研究方向Materials Science
WOS类目Materials Science, Ceramics
项目资助者National Natural Science Foundation of China(51202247) ; open fund of State key laboratory of multiphase complex systems(MPCS-2014-D-13)
WOS记录号WOS:000406438700011
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23158
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
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Yang, Ming,Zhu, Yongping,Wang, Xueying,et al. Effect of five kinds of pores shape on thermal stress properties of thermal barrier coatings by finite element method[J]. CERAMICS INTERNATIONAL,2017,43(13):9664-9678.
APA Yang, Ming.,Zhu, Yongping.,Wang, Xueying.,Guo, Shengnan.,Hu, Jing.,...&Chu, Ying.(2017).Effect of five kinds of pores shape on thermal stress properties of thermal barrier coatings by finite element method.CERAMICS INTERNATIONAL,43(13),9664-9678.
MLA Yang, Ming,et al."Effect of five kinds of pores shape on thermal stress properties of thermal barrier coatings by finite element method".CERAMICS INTERNATIONAL 43.13(2017):9664-9678.
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