基于缺陷回复的晶体测温技术及其在工程技术领域的应用研究

Research on Crystal Temperature Measurement Technology Based on Defect Recovery and Its Application in Engineering Technology

高超飞行器表面、航空发动机叶片等重大装备关键高温构件工作环境极端恶劣,且处于高速运动或转动工作状态,高温热作用将直接影响构件工作性能及寿命,甚至威胁装备安全。由于工作环境和工作状态的极端性,传统的热电偶、示温漆以及薄膜热电偶等测温方法,已无法满足极端工况(高温、高压、高转速、高负荷等极端工况)复杂构件表面极限高温精准获取,迫切需要创新性发展新的无源分布式测温技术,增强我国在航空装备研发方面的科技实力。本文介绍的晶体温度传感技术有望解决以往测温技术测温上限低、测温系统复杂、受工况环境和空间限制等难题,可实现关重件表面温度精准测量。该技术基于晶体缺陷高温回复,可对工作目标异域分时进行温度读取,对解决在役在研关重件工作极限高温精准测量具有重要意义。

The working environment of key high-temperature components of major equipment such as hypersonic aircraft surface and aeroengine blade is extremely harsh,and they are in high-speed motion or rotation state.High temperature thermal effect will directly affect the performance and life of components,and even threaten the safety of equipment.Due to the extreme working environment and working state,the traditional temperature measurement methods such as thermocouple,temperature indicating paint and thin film thermocouple cannot accurately obtain the extreme surface temperature of complex components under extreme conditions(high temperature,high pressure,high speed,high load and other extreme conditions).Therefore,it is urgent to develop a new distributed temperature measurement technology,enhancing China's scientific and technological strength in aviation equipment research and development.The crystal temperature sensing technology introduced in this paper is expected to solve the problems as low upper limit of temperature measurement,complex temperature measurement system,working environment and space limits,which can realize accurate surface temperature measurement of key parts.Based on high temperature recovery of crystal defects,the technology can read the temperature of the working target in different regions in time,which is of great significance to solve the accurate measurement of the working limit high temperature of key parts in service/development.