| Finite element analysis of stresses and interface crack in TBC systems |
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| 作者姓名： | 陈晓梅 张跃 宫声凯 |
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| 作者单位： | SchoolofMaterialsScienceandEngineering,BeijingUniversityofAeronauticsandAstronautics,Beijing100083,China |
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| 摘 要： | Thermal barrier coatings have been used on high temperature components. Due to high stresses leading to unpredictable failure, a transient thermal-structural finite element solution was employed to analyze the stress distribution and J-integral at the interface between the bond coating and thermally growing oxide(TGO) in the EB-PVD thermal barrier coatings subjected to thermal loadings. The effects of some environmental and material parameters were studied, such as thermal convection coefficient, ceramic elastic modulus and TGO thickness. The results show that the stresses and J-integral values are impacted by these parameters.
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| 关 键 词： | 热障电镀 有限元法 断裂应力 J-积分 MCrAlY合金 |
Finite element analysis of stresses and interface crack in TBC systems |
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| CHEN Xiao-mei,ZHANG Yue,GONG Sheng-kai.Finite element analysis of stresses and interface crack in TBC systems[J].Transactions of Nonferrous Metals Society of China,2005,15(2):457-459. |
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| Authors: | CHEN Xiao-mei ZHANG Yue GONG Sheng-kai |
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| Abstract: | Thermal barrier coatings have been used on high temperature components. Due to high stresses leading to unpredictable failure, a transient thermal-structural finite element solution was employed to analyze the stress distribution and J-integral at the interface between the bond coating and thermally growing oxide(TGO) in the EB-PVD thermal barrier coatings subjected to thermal loadings. The effects of some environmental and material parameters were studied, such as thermal convection coefficient, ceramic elastic modulus and TGO thickness. The results show that the stresses and J-integral values are impacted by these parameters. |
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| Keywords: | thermal barrier coatings finite element method stress crack J-integral |
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