The results of a field test in a commercial turbine engine showed that we can remotely measure the temperature of engine components in operating engines using thermographic phosphors. The remote-measurement method exploits the temperature dependence of the characteristic decay time of the laser-induced fluorescence of thermographic phosphors. This paper summarizes recent work leading up to and including a successful test of the thermographic-phosphor method in an operating turbine engine.
Evaluating Thermographic Phosphors in an Operating Turbine Engine
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Noel, B. W., Borella, H. M., Lewis, W., Turley, W. D., Beshears, D. L., Capps, G. J., Cates, M. R., Muhs, J. D., and Tobin, K. W. (April 1, 1991). "Evaluating Thermographic Phosphors in an Operating Turbine Engine." ASME. J. Eng. Gas Turbines Power. April 1991; 113(2): 242–245. https://doi.org/10.1115/1.2906554
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