An experimental investigation of luminescence lifetime thermometry for high temperature engine components using coatings of YAG:DY AND YAG:TM

T. P. Jenkins, J. I. Eldridge, S. W. Allison, R. P. Howard, E. H. Jordan, Douglas Edward Wolfe

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

Experiments were conducted to evaluate the performance of a thermographic phosphor thermometry system for measuring temperatures of engine hot section components, such as turbine blades and vanes. Two vanes, one coated with YAG:Dy and the other with YAG:Tm, both applied on top of a thermal barrier coating (TBC), were tested. Measurements of laser-induced luminescence lifetime were obtained from both vanes at room temperature, and from the YAG:Dy vane supported in the exhaust of an afterburning turbine engine. The measured luminescence lifetime was found to vary in a systematic way with signal level for both phosphor coatings. This behavior was attributed to saturation effects of the detector. Estimated temperatures of the YAG:Dy-coated vane at afterburning conditions were in the neighborhood of 1250 °C. Signal levels were found to be sufficient to enable a precision of 6 °C at 1050 °C, extrapolated to 3 °C at 1250 °C. Background levels at full afterburner were significant, but manageable using narrowband spectral filtering of the collected luminescence. These findings indicate that a thermometry system for engine components at high temperatures is feasible using at least one, and possibly either, of these coatings.

Original languageEnglish (US)
StatePublished - Sep 25 2013
EventJoint Conference on 67th Machinery Failure Prevention Technology, MFPT 2013 and 59th International Society of Automation, ISA 2013 - Cleveland, OH, United States
Duration: May 13 2013May 17 2013

Other

OtherJoint Conference on 67th Machinery Failure Prevention Technology, MFPT 2013 and 59th International Society of Automation, ISA 2013
CountryUnited States
CityCleveland, OH
Period5/13/135/17/13

Fingerprint

Luminescence
Engines
Coatings
Phosphors
Turbines
Temperature
Thermal barrier coatings
Turbomachine blades
Detectors
Lasers
Experiments

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Safety, Risk, Reliability and Quality

Cite this

Jenkins, T. P., Eldridge, J. I., Allison, S. W., Howard, R. P., Jordan, E. H., & Wolfe, D. E. (2013). An experimental investigation of luminescence lifetime thermometry for high temperature engine components using coatings of YAG:DY AND YAG:TM. Paper presented at Joint Conference on 67th Machinery Failure Prevention Technology, MFPT 2013 and 59th International Society of Automation, ISA 2013, Cleveland, OH, United States.
Jenkins, T. P. ; Eldridge, J. I. ; Allison, S. W. ; Howard, R. P. ; Jordan, E. H. ; Wolfe, Douglas Edward. / An experimental investigation of luminescence lifetime thermometry for high temperature engine components using coatings of YAG:DY AND YAG:TM. Paper presented at Joint Conference on 67th Machinery Failure Prevention Technology, MFPT 2013 and 59th International Society of Automation, ISA 2013, Cleveland, OH, United States.
@conference{2f5be8a92c484b9c8cd08af14f11736b,
title = "An experimental investigation of luminescence lifetime thermometry for high temperature engine components using coatings of YAG:DY AND YAG:TM",
abstract = "Experiments were conducted to evaluate the performance of a thermographic phosphor thermometry system for measuring temperatures of engine hot section components, such as turbine blades and vanes. Two vanes, one coated with YAG:Dy and the other with YAG:Tm, both applied on top of a thermal barrier coating (TBC), were tested. Measurements of laser-induced luminescence lifetime were obtained from both vanes at room temperature, and from the YAG:Dy vane supported in the exhaust of an afterburning turbine engine. The measured luminescence lifetime was found to vary in a systematic way with signal level for both phosphor coatings. This behavior was attributed to saturation effects of the detector. Estimated temperatures of the YAG:Dy-coated vane at afterburning conditions were in the neighborhood of 1250 °C. Signal levels were found to be sufficient to enable a precision of 6 °C at 1050 °C, extrapolated to 3 °C at 1250 °C. Background levels at full afterburner were significant, but manageable using narrowband spectral filtering of the collected luminescence. These findings indicate that a thermometry system for engine components at high temperatures is feasible using at least one, and possibly either, of these coatings.",
author = "Jenkins, {T. P.} and Eldridge, {J. I.} and Allison, {S. W.} and Howard, {R. P.} and Jordan, {E. H.} and Wolfe, {Douglas Edward}",
year = "2013",
month = "9",
day = "25",
language = "English (US)",
note = "Joint Conference on 67th Machinery Failure Prevention Technology, MFPT 2013 and 59th International Society of Automation, ISA 2013 ; Conference date: 13-05-2013 Through 17-05-2013",

}

Jenkins, TP, Eldridge, JI, Allison, SW, Howard, RP, Jordan, EH & Wolfe, DE 2013, 'An experimental investigation of luminescence lifetime thermometry for high temperature engine components using coatings of YAG:DY AND YAG:TM' Paper presented at Joint Conference on 67th Machinery Failure Prevention Technology, MFPT 2013 and 59th International Society of Automation, ISA 2013, Cleveland, OH, United States, 5/13/13 - 5/17/13, .

An experimental investigation of luminescence lifetime thermometry for high temperature engine components using coatings of YAG:DY AND YAG:TM. / Jenkins, T. P.; Eldridge, J. I.; Allison, S. W.; Howard, R. P.; Jordan, E. H.; Wolfe, Douglas Edward.

2013. Paper presented at Joint Conference on 67th Machinery Failure Prevention Technology, MFPT 2013 and 59th International Society of Automation, ISA 2013, Cleveland, OH, United States.

Research output: Contribution to conferencePaper

TY - CONF

T1 - An experimental investigation of luminescence lifetime thermometry for high temperature engine components using coatings of YAG:DY AND YAG:TM

AU - Jenkins, T. P.

AU - Eldridge, J. I.

AU - Allison, S. W.

AU - Howard, R. P.

AU - Jordan, E. H.

AU - Wolfe, Douglas Edward

PY - 2013/9/25

Y1 - 2013/9/25

N2 - Experiments were conducted to evaluate the performance of a thermographic phosphor thermometry system for measuring temperatures of engine hot section components, such as turbine blades and vanes. Two vanes, one coated with YAG:Dy and the other with YAG:Tm, both applied on top of a thermal barrier coating (TBC), were tested. Measurements of laser-induced luminescence lifetime were obtained from both vanes at room temperature, and from the YAG:Dy vane supported in the exhaust of an afterburning turbine engine. The measured luminescence lifetime was found to vary in a systematic way with signal level for both phosphor coatings. This behavior was attributed to saturation effects of the detector. Estimated temperatures of the YAG:Dy-coated vane at afterburning conditions were in the neighborhood of 1250 °C. Signal levels were found to be sufficient to enable a precision of 6 °C at 1050 °C, extrapolated to 3 °C at 1250 °C. Background levels at full afterburner were significant, but manageable using narrowband spectral filtering of the collected luminescence. These findings indicate that a thermometry system for engine components at high temperatures is feasible using at least one, and possibly either, of these coatings.

AB - Experiments were conducted to evaluate the performance of a thermographic phosphor thermometry system for measuring temperatures of engine hot section components, such as turbine blades and vanes. Two vanes, one coated with YAG:Dy and the other with YAG:Tm, both applied on top of a thermal barrier coating (TBC), were tested. Measurements of laser-induced luminescence lifetime were obtained from both vanes at room temperature, and from the YAG:Dy vane supported in the exhaust of an afterburning turbine engine. The measured luminescence lifetime was found to vary in a systematic way with signal level for both phosphor coatings. This behavior was attributed to saturation effects of the detector. Estimated temperatures of the YAG:Dy-coated vane at afterburning conditions were in the neighborhood of 1250 °C. Signal levels were found to be sufficient to enable a precision of 6 °C at 1050 °C, extrapolated to 3 °C at 1250 °C. Background levels at full afterburner were significant, but manageable using narrowband spectral filtering of the collected luminescence. These findings indicate that a thermometry system for engine components at high temperatures is feasible using at least one, and possibly either, of these coatings.

UR - http://www.scopus.com/inward/record.url?scp=84884374883&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84884374883&partnerID=8YFLogxK

M3 - Paper

ER -

Jenkins TP, Eldridge JI, Allison SW, Howard RP, Jordan EH, Wolfe DE. An experimental investigation of luminescence lifetime thermometry for high temperature engine components using coatings of YAG:DY AND YAG:TM. 2013. Paper presented at Joint Conference on 67th Machinery Failure Prevention Technology, MFPT 2013 and 59th International Society of Automation, ISA 2013, Cleveland, OH, United States.