CAS OpenIR  > 多相复杂系统国家重点实验室
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
Source PublicationCERAMICS INTERNATIONAL
ISSN0272-8842
Volume43Issue:13Pages:9664-9678
Abstract

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.

KeywordShaping Thermal Stress Failure Analysis Finite Element Method
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.ceramint.2017.04.139
Indexed BySCI
Language英语
WOS KeywordSIMULATION ; MICROSTRUCTURE ; BEHAVIOR ; TBCS
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics
Funding OrganizationNational Natural Science Foundation of China(51202247) ; open fund of State key laboratory of multiphase complex systems(MPCS-2014-D-13)
WOS IDWOS:000406438700011
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/23158
Collection多相复杂系统国家重点实验室
Affiliation1.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
Recommended Citation
GB/T 7714
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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