The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 04, 2004
Filed:
Dec. 20, 2001
Alok Mani Srivastava, Niskayuna, NY (US);
Anant Achyut Setlur, Niskayuna, NY (US);
Holly Ann Comanzo, Niskayuna, NY (US);
John William Devitt, Clifton Park, NY (US);
James Anthony Ruud, Delmar, NY (US);
Luke Nathaniel Brewer, Rexford, NY (US);
General Electric Company, Niskayuna, NY (US);
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.