A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PHOSPHOR THERMOMETRY DEVICE FOR SYNCHRONIZED ACQUISITION OF LUMINESCENCE LIFETIME DECAY AND INTENSITY ON THERMAL BARRIER COATINGS
A phosphor thermometry device includes a laser that generates a laser pulse onto a thermal barrier coating (TBC) applied onto a substrate. A metallic bond coat layer is on the substrate. A ceramic top coat layer is on the bond coat layer and includes an undoped layer and a doped sensing layer having co-doped first and second rare-earth luminescent dopants that emit respective first and second different emission wavelengths upon excitation by the laser pulse. A detector receives reflected, convoluted luminescence signals from the TBC. First and second photomultiplier devices detect respective first and second different emission wavelengths of the convoluted luminescence signals. A controller receives and processes signals generated from respective first and second photomultiplier devices and determines luminescence lifetime decay and intensity variations for each of the respective first and second rare-earth luminescent dopants for temperature monitoring of the TBC.
PHOSPHOR THERMOMETRY DEVICE FOR SYNCHRONIZED ACQUISITION OF LUMINESCENCE LIFETIME DECAY AND INTENSITY ON THERMAL BARRIER COATINGS
A phosphor thermometry device includes a laser that generates a laser pulse onto a thermal barrier coating (TBC) applied onto a substrate. A metallic bond coat layer is on the substrate. A ceramic top coat layer is on the bond coat layer and includes an undoped layer and a doped sensing layer having co-doped first and second rare-earth luminescent dopants that emit respective first and second different emission wavelengths upon excitation by the laser pulse. A detector receives reflected, convoluted luminescence signals from the TBC. First and second photomultiplier devices detect respective first and second different emission wavelengths of the convoluted luminescence signals. A controller receives and processes signals generated from respective first and second photomultiplier devices and determines luminescence lifetime decay and intensity variations for each of the respective first and second rare-earth luminescent dopants for temperature monitoring of the TBC.
PHOSPHOR THERMOMETRY DEVICE FOR SYNCHRONIZED ACQUISITION OF LUMINESCENCE LIFETIME DECAY AND INTENSITY ON THERMAL BARRIER COATINGS
FOULIARD QUENTIN (author) / GHOSH RANAJAY (author) / RAGHAVAN SEETHA (author)
2023-06-08
Patent
Electronic Resource
English
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