Abstract Measuring the temperature below surface of a thermal barrier coating (TBC) using thin phosphor layer is challenging primarily due to absorption and scattering laser excitation light luminescence as they propagate through coating. One way increase could be use upconversion thermometry, which investigated in current study. It attractive because longer wavelengths reduces TBCs 8 % wt. Ytt...

In this article, a theoretical 1-D heat transfer model and conjugate numerical simulation was carried out to evaluate the thermal insulation of TBCs under different factors. The relationship temperature-drop between inner or outer surface barrier coating (TBC) investigated by simulation. effect TBC coupling internal external are obtained, which indicates that film cooling can both contribute an...

The thermal cyclic behavior of self-healing barrier coatings (SH-TBC) is analyzed numerically to develop a lifetime prediction model. Representative microstructures are studied adopting unit cell based multiscale modeling approach along with simplified evolution model for the thermally-grown oxide layer (TGO) study damage and healing in TBC system. fracture process modeled using cohesive zone-b...