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首页> 外文会议>Advanced ceramic coatings and interfaces V >THERMAL PROPERTY MEASUREMENT FOR THERMAL BARRIER COATINGS BY THERMAL IMAGING METHOD
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THERMAL PROPERTY MEASUREMENT FOR THERMAL BARRIER COATINGS BY THERMAL IMAGING METHOD

机译：热成像法测量热障涂层的热性能

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摘要

Thermal barrier coatings (TBCs) are being extensively used for improving the performance and extending the life of combustor and gas turbine components. TBC thermal properties, thermal conductivity and heat capacity (the product of density and specific heat), are important parameters in those applications. These TBC properties are usually measured by destructive methods, involving separating the ceramic coating layer from the substrate and performing density, specific heat, and thermal diffusivity measurements. Nondestructive evaluation (NDE) methods, on the other hand, allow for direct TBC property measurement on natural TBC samples. Therefore, they can be used for inspecting the quality of as-processed components and monitoring TBC degradation during service. This paper presents a multilayer thermal-modeling NDE method, which analyzes data obtained from pulsed thermal imaging, to determine thermal conductivity and heat capacity distributions over the entire surface of a TBC specimen. The measurement accuracy was investigated and compared with standard destructive measurement data. Experimental results are presented and discussed.
机译：隔热涂层（TBC）被广泛用于改善性能并延长燃烧器和燃气轮机组件的寿命。在这些应用中，TBC的热性能，导热率和热容量（密度与比热的乘积）是重要的参数。这些TBC特性通常通过破坏性方法来测量，包括从基底上分离陶瓷涂层并进行密度，比热和热扩散率测量。另一方面，无损评估（NDE）方法允许对天然TBC样品进行直接TBC特性测量。因此，它们可用于检查已加工组件的质量并在维修过程中监控TBC的劣化。本文提出了一种多层热建模NDE方法，该方法分析了从脉冲热成像获得的数据，以确定在TBC样品整个表面上的导热率和热容分布。研究了测量精度，并与标准破坏性测量数据进行了比较。实验结果进行了介绍和讨论。

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