2024
DOI: 10.1115/1.4066027
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Comprehensive Understanding of Thermally Grown Oxide Morphology Effect on the Thermal Barrier Coatings Failure Under Free Edges

Da Qiao,
Wu Zeng

Abstract: The growth stresses induced by the thermally grown oxide (TGO) will be amplified at the free-edge site, making the free-edge site a weak part of the thermal barrier coatings (TBCs). In this study, the TBCs failure behavior is investigated based on different TGO morphologies under free edges. The thermomechanical model is established by creating straight lines and simplified sinusoidal curves, respectively. Dynamic TGO growth is realized by the secondary development of the subroutine. The cohesive element is in… Show more

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