Abstract
A technique that uses high resolution infrared (IR) imaging was developed to track and analyze damage evolution of thermal barrier coatings (TBCs) during controlled mechanical testing of a TBC specimen. Coating debonding and spallation were examined during a monotonic load-to-TBC-failure test. The infrared imaging, in concert with a controlled thermal gradient in the specimen, was particularly effective in identifying and tracking localized damage evolution because the damage in the TBC was always associated with a measurable surface-temperature change. It is demonstrated that the combined use of high-resolution infrared imaging and controlled mechanical testing of TBCs is an effective method to characterize the evolution of their failure.
| Original language | English |
|---|---|
| Pages (from-to) | 2643-2651 |
| Number of pages | 9 |
| Journal | Journal of Materials Science |
| Volume | 35 |
| Issue number | 11 |
| DOIs | |
| State | Published - 2000 |
Funding
⁄Research supported by the U.S. Department of Energy, Assistant Secretary for Energy Efficiency and Renewable Energy, by two sources: (a) Office of Industrial Technologies, Advanced Turbine Systems Program, and (b) Office of Transportation Technologies, High Temperature Materials Laboratory Fellowship Program, both under contract DE-AC05-96OR22464 with Lockheed Martin Energy Research Corporation.