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Temperature Mapping of Air Film-Cooled Thermal Barrier Coated Surfaces Using Cr-Doped GdAlO3 Phosphor ThermographyIt has been recently shown that the high luminescence intensity from a Cr-doped GdAlO3 (Cr:GdAlO3) thermographic phosphor enables non-rastered full-field temperature mapping of thermal barrier coating (TBC) surfaces to temperatures above 1000C. In this presentation, temperature mapping by Cr:GdAlO3 based phosphor thermometry of air film-cooled TBC-coated surfaces is demonstrated for both scaled-up cooling hole geometries as well as for actual components in a burner rig test environment. The effects of thermal background radiation and flame chemiluminescence on the measurements are investigated, and advantages of this method over infrared thermography as well as the limitations of this method for studying air film cooling are discussed.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Eldridge, Jeffrey I.
(NASA Glenn Research Center Cleveland, OH United States)
Shyam, Vikram
(NASA Glenn Research Center Cleveland, OH United States)
Wroblewski, Adam C.
(NASA Glenn Research Center Cleveland, OH United States)
Zhu, Dongming
(NASA Glenn Research Center Cleveland, OH United States)
Cuy, Michael D.
(Vantage Partners, LLC Brook Park, OH, United States)
Wolfe, Douglas E.
(Pennsylvania State Univ. University Park, PA, United States)
Date Acquired
December 9, 2016
Publication Date
January 25, 2016
Subject Category
Fluid Mechanics And Thermodynamics
Nonmetallic Materials
Report/Patent Number
Meeting Information
Meeting: International Conference and Expo on Advanced Ceramics and Composites
Location: Daytona Beach, FL
Country: United States
Start Date: January 25, 2016
End Date: January 29, 2016
Sponsors: American Ceramic Society
Funding Number(s)
WBS: WBS 109492.
Distribution Limits
Public Use Permitted.
thermographic phoshor
air film cooling
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