Stress analysis of ceramic thermal barrier coatings using THz instrumentation.

这是一个机械工程博士研究项目。陶瓷热障涂层(TBCs)在航空航天、汽车和能源领域的高温应用中得到了越来越多的应用。本项目的目的是测量热障涂层中的亚表面应力分布。这些应力测量将被用来改善陶瓷涂层的性能，通过开发更好和更坚固的制造方法和数值模型来预测即将发生的涂层失效。我们将使用最先进的GHz和THz成像和光谱设备来测量应力分布，并将它们与破坏性测量的结果进行比较。还将开发检测涂层脱粘和缺陷的技术，并将其与预测涂层性能的数值模型进行比较。博士学位将涉及与我们在罗尔斯-罗伊斯、雷尼绍和克兰菲尔德大学的合作伙伴密切合作，以了解在热障涂层制造过程中的压力是如何发展的，以及在使用中热障涂层是如何降级的。“

"This is a PhD research project in Mechanical Engineering.Ceramic thermal barrier coatings (TBCs) are increasingly use in high-temperature applications in the aerospace, automotive and energy sectors. The aim of this project is to measure sub-surface stress distributions in TBCs. These stress measurements will be used to improve the performance of the ceramic coatings, through the development of better and more robust manufacturing methods and numerical models that permit the prediction of imminent coating failure. We will use state-of-the-art GHz and THz imaging and spectroscopy equipment to measure the stress distributions and compare them to the results from destructive measurements. Techniques for detecting coating de-bonds and defects will also be developed and compared to numerical models predicting coating performance. The PhD will involve close collaboration with our partners at Rolls-Royce, Renishaw and Cranfield University to understand how stresses develop during TBC manufacture and degrade the TBCs in service."