Apparatus for determining past-service conditions and remaining life of thermal barrier coatings and components having such coatings
US6730918B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2001 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Jun 17, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/6489
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for determining past-service conditions and/or remaining useful life of a component of a combustion engine and/or a thermal barrier coating (“TBC”) of the component comprises a radiation source that provides the exciting radiation to the TBC to excite a photoluminescent (“PL”) material contained therein, a radiation detector for detecting radiation emitted by the PL material, and means for relating a characteristic of an emission spectrum of the PL material to the amount of a crystalline phase in the TBC, thereby inferring the past-service conditions or the remaining useful life of the component or the TBC.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.