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Real-time thermographic-phosphor-based temperature measurements of thermal barrier coating surfaces subjected to a high-velocity combustor burner environment
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Condevaux, J. J. Cruzen, Scott Eldridge, Jeffrey I. Paul, A. D. Allison, Stephen W. Senk, J. R. Jenkins, Thomas P. |
| Copyright Year | 2011 |
| Description | Surface temperature measurements were conducted on metallic specimens coated with an yttria-stabilized zirconia (YSZ) thermal barrier coating (TBC) with a YAG:Dy phosphor layer that were subjected to an aggressive high-velocity combustor burner environment. Luminescence-based surface temperature measurements of the same TBC system have previously been demonstrated for specimens subjected to static furnace or laser heating. Surface temperatures were determined from the decay time of the luminescence signal of the YAG:Dy phosphor layer that was excited by a pulsed laser source. However, the furnace and laser heating provides a much more benign environment than that which exists in a turbine engine, where there are additional challenges of a highly radiant background and high velocity gases. As the next step in validating the suitability of luminescence-based temperature measurements for turbine engine environments, new testing was performed where heating was provided by a high-velocity combustor burner rig at Williams International. Real-time surface temperature measurements during burner rig heating were obtained from the decay of the luminescence from the YAG:Dy surface layer. The robustness of several temperature probe designs in the sonic velocity, high radiance flame environment was evaluated. In addition, analysis was performed to show whether the luminescence decay could be satisfactorily extracted from the high radiance background. |
| File Size | 13811999 |
| Page Count | 25 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20150010402 |
| Archival Resource Key | ark:/13960/t85j2hr0w |
| Language | English |
| Publisher Date | 2011-06-20 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Spacecraft Propulsion And Power Ground Support Systems And Facilities (space) Robustness Mathematics Data Acquisition Temperature Probes Luminescence Pulsed Lasers Real Time Operation Design Engine Testing Laboratories Temperature Measurement Thermal Control Coatings Radiance Phosphors Yttria-stabilized Zirconia High Speed Specimens Combustion Chambers Turbine Engines Thermography Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Presentation |
