Finite Element Analysis of Thermal Fatigue in Thermal Barrier Coatings
Veröffentlicht in 2009
A Finite element model of plasma sprayed TBC’s was developed to estimate the stress induced by thermal cycling experiments. A heat transfer analysis was performed to evaluate the temperature distribution on the specimen during the cooling under an impinging air jet; temperature measurements performed with an infrared pyrometer on the cooled samples show good agreement with the evaluated data. These results were then integrated in a structural mechanic model as thermal load. The COMSOL Multiphysics® Thermal-Structural interaction model allowed to determine the dependence of the stress on the temperature fields.
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