Application of infrared imaging to the study of controlled failure of thermal barrier coatings

Citation
Mk. Ferber et al., Application of infrared imaging to the study of controlled failure of thermal barrier coatings, J MATER SCI, 35(11), 2000, pp. 2643-2651
Citations number
19
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF MATERIALS SCIENCE
ISSN journal
00222461 → ACNP
Volume
35
Issue
11
Year of publication
2000
Pages
2643 - 2651
Database
ISI
SICI code
0022-2461(200006)35:11<2643:AOIITT>2.0.ZU;2-O
Abstract
A technique that uses high resolution infrared (IR) imaging was developed t o track and analyze damage evolution of thermal barrier coatings (TBCs) dur ing controlled mechanical testing of a TBC specimen. Coating debonding and spallation were examined during a monotonic load-to-TBC-failure test. The i nfrared imaging, in concert with a controlled thermal gradient in the speci men, was particularly effective in identifying and tracking localized damag e evolution because the damage in the TBC was always associated with a meas urable surface-temperature change. It is demonstrated that the combined use of high-resolution infrared imaging and controlled mechanical testing of T BCs is an effective method to characterize the evolution of their failure. (C) 2000 Kluwer Academic Publishers.