Non-Destructive Detection of In-Service Corrosion on Gas Turbine Components

燃气涡轮发动机部件的使用寿命通常受到部件的损伤容忍寿命的限制。然而，对于某些涡轮叶片，热腐蚀和腐蚀疲劳可能使其在使用寿命到期前无法继续使用。工业化的非破坏性热腐蚀和腐蚀疲劳检测技术的缺乏意味着，一些涡轮叶片在固定的时间间隔内被自动从服务中移除，以减轻各种腐蚀机制的潜在灾难性影响，即使大量的名义损伤容忍寿命仍然存在。这项研究的目标是了解可能影响燃气涡轮发动机部件的腐蚀机制，以及相应的无损检测技术，这些技术可用于改善这些部件的使用寿命管理。

The service lives of the components in a gas turbine engine are usually limited by the components' damage tolerant life. However, for some turbine blades, hot corrosion and corrosion fatigue may make continued service untenable before the expiration of this life. The absence of industrialised non-destructive hot corrosion and corrosion fatigue detection techniques mean that some turbine blades are automatically removed from service at fixed intervals to mitigate the potentially-catastrophic impact of various corrosion mechanisms, even if substantial nominal damage tolerant life remains.This research will target understanding the corrosion mechanisms that may affect gas turbine engine components and the corresponding non-destructive detection techniques that may be used to improve the service life management of these components.