Advances in the application of non-contact temperature measurement technology for aero-engine blade.

This article provides a comprehensive overview of non-contact temperature measurement technologies for aero-engine turbine blades, focusing on fluorescence thermometry, fiber-optic thermometry, and radiation thermometry. It details the principles, technical characteristics, and current domestic and international research status of each method, highlighting their advantages and limitations in high-temperature, high-speed environments typical of modern aero-engines. The review emphasizes ongoing challenges such as measurement accuracy, interference from environmental factors, and the need for improved materials and data processing techniques to meet the increasing temperature demands of next-generation engines. Future development trends include the optimization of sensing materials, enhancement of multi-wavelength and distributed sensing technologies, and refinement of temperature measurement algorithms to ensure reliable, precise monitoring under harsh operating conditions.