In the past decades, the durability of thermal barrier coatings (TBCs) has been extensively studied. The majority of researches emphasized the problem of oxidation, corrosion, and erosion induced by foreign object damage (FOD). TBCs with low thermal conductivity are usually coated on the hot-section components of the aircraft engine. The main composition of the TBCs is top-coat, which is usually regarded as a wear-resistant and heat-insulating layer, and it will significantly improve the working temperature of the hot-section components of the aircraft engine. The application of TBCs are serviced under a complex and rigid environment. The external parts of the TBCs are subjected to high-temperature and high-pressure loading, and the inner parts of the TBCs have a large thermal stress due to the different physical properties between the adjacent layers of the TBCs. To improve the heat efficiency of the hot-section components of aircraft engines, the working temperature of the TBCs should be improved further, which will result in the failure mechanism becoming more and more complicated for TBCs; thus, the current study is focusing on reviewing the failure mechanism of the TBCs when they are serviced under the actual high temperature conditions. Finite element simulation is an important method to study the failure mechanism of the TBCs, especially under some extremely rigid environments, which the experimental method cannot realize. In this paper, the research progress of the failure mechanism of TBCs at high temperature via finite element modeling is systematically reviewed.

中文翻译：

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高温热障涂层失效机理的有限元研究进展

在过去的几十年中，对隔热涂层（TBC）的耐久性进行了广泛的研究。大多数研究都强调了异物损坏（FOD）引起的氧化，腐蚀和侵蚀问题。具有低热导率的TBC通常涂覆在飞机发动机的热段部件上。TBC的主要成分是面漆，通常被认为是耐磨和隔热的层，它将显着提高飞机发动机热段部件的工作温度。TBC的应用是在复杂而严格的环境中提供服务的。TBC的外部部件承受高温和高压负荷，由于TBC相邻层之间的物理性质不同，TBC的内部具有较大的热应力。为了提高飞机发动机热段部件的热效率，需要进一步提高TBC的工作温度，这将导致TBC的失效机理越来越复杂。因此，当前的研究集中在审查TBC在实际高温条件下维修时的失效机理。有限元模拟是研究TBCs失效机理的重要方法，特别是在某些极端刚性的环境下，这种方法是实验方法无法实现的。在本文中，