Image-based extended finite element modeling of thermal barrier coatings |
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Authors: | P Michlik |
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Affiliation: | a Department of Materials Science and Engineering, SUNY Stony Brook, USA b James Cook University, School of Engineering, Townsville, 4811, Australia |
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Abstract: | Further advances in Thermal Barrier Coating (TBC) design are linked with the evolution of numerical models for TBCs. The present paper, therefore, enhances the idea of a currently available FEM package (OOF) that has been designed for microstructural level simulations. The approach of Extended FEM (XFEM) is incorporated in an in-house developed program to account for the existence of cracks in TBCs; both for stress-strain analysis and for heat transfer analysis. The new XFEM program is then employed to carry out the analyses of a YSZ deposit and a multilayered TBC to predict the effective Young's moduli, the overall thermal conductivities, and to assess the fracture behavior of the coating. |
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Keywords: | Extended finite element analysis Thermal barrier coatings Microstructural level modeling Elastic properties Thermal conductivity |
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