论文信息 - Mapping the surface temperature of ceramic and superalloy turbine engine components using laser-induced fluorescence of thermographic phosphor

Mapping the surface temperature of ceramic and superalloy turbine engine components using laser-induced fluorescence of thermographic phosphor

Abstract An excimer laser-based system for mapping the surface temperature of turbine engine parts coated with thermographic phosphors has been developed. The intensities measured for Y2O3:Eu over the temperature range ∼500–750°C are presented. In addition, the data correction and error analysis algorithm is discussed. The overall accuracy of this intensity-based surface temperature measurement technique was estimated to be ±5%. Furthermore, surface temperature measurements obtained from a ceramic matrix composite and superalloy components are presented.

[1] J. Andraos. On the Propagation of Statistical Errors for a Function of Several Variables , 1996 .

[2] High-Temperature Remote Thermometry Using Laser-Induced Fluorescence Decay Lifetime Measurements of Y203 : Eu and YAG : Tb , 1993 .

[3] Stephen E. Reichenbach,et al. Characterizing digital image acquisition devices , 1991 .

[4] Sami D. Alaruri,et al. Emissivity measurements for YSZ thermal barrier coating at high temperatures using a 1.6-μm single-wavelength pyrometer , 1998 .

[5] G. Gillies,et al. Remote thermometry with thermographic phosphors: Instrumentation and applications , 1997 .

[6] H. H. Ku,et al. Notes on the use of propagation of error formulas , 1966 .

[7] Mark A. Thomas,et al. High-temperature remote thermometry using laser-induced fluorescence decay lifetime measurements of Y/sub 2/O/sub 3/:Eu and YAG:Tb thermographic phosphors , 1993 .

[8] Development of a fiber-optic probe for thermographic phosphor measurements in turbine engines , 1995 .

[9] Sami D. Alaruri,et al. Effective spectral emissivity measurements of superalloys and YSZ thermal barrier coating at high temperatures using a 1.6μm single wavelength pyrometer , 1998 .

[10] Sami D. Alaruri,et al. Integrating sphere method for determining the effective spectral emissivity of superalloys at high temperatures using a single wavelength pyrometer , 1996 .