Thermal history sensors for non-destructive temperature measurements in harsh environments

C. C. Pilgrim, A. L. Heyes, J. P. Feist

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

4 Citations (Scopus)

Abstract

The operating temperature is a critical physical parameter in many engineering applications, however, can be very challenging to measure in certain environments, particularly when access is limited or on rotating components. A new quantitative non-destructive temperature measurement technique has been proposed which relies on thermally induced permanent changes in ceramic phosphors. This technique has several distinct advantages over current methods for many different applications. The robust ceramic material stores the temperature information allowing long term thermal exposures in harsh environment to be measured at a convenient time. Additionally, rare earth dopants make the ceramic phosphorescent so that the temperature information can be interpreted by automated interrogation of the phosphorescent light. This technique has been demonstrated by application of YAG doped with dysprosium and europium as coatings through the air-plasma spray process. Either material can be used to measure temperature over a wide range, namely between 300°C and 900°C. Furthermore, results show that the material records the peak exposure temperature and prolonged exposure at lower temperatures would have no effect on the temperature measurement. This indicates that these materials could be used to measure peak operating temperatures in long-term testing.
Original languageEnglish
Title of host publication40th Annual Review of Progress in Quantitative Nondestructive Evaluation
Subtitle of host publicationIncorporating the 10th International Conference on Barkhausen Noise and Micromagnetic Testing
EditorsDale E Chimenti, Leonard J Bond, Donald O Thompson
Place of PublicationNY, USA
Pages1609-1616
Number of pages8
Volume33A & 33B
DOIs
Publication statusPublished - 2014
Event40th Annual Review of Progress in Quantitative Nondestructive Evaluation: Incorporating the 10th International Conference on Barkhausen Noise and Micromagnetic Testing - Baltimore, United States
Duration: 21 Jul 201326 Jul 2013

Publication series

NameAIP Conference Proceedings
PublisherAmerican Institute of Physics
Volume1581
ISSN (Print)0094-243X

Conference

Conference40th Annual Review of Progress in Quantitative Nondestructive Evaluation: Incorporating the 10th International Conference on Barkhausen Noise and Micromagnetic Testing
CountryUnited States
CityBaltimore
Period21/07/1326/07/13

Keywords

  • temperature measurement
  • phosphorescence
  • thermal barrier coating

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  • Cite this

    Pilgrim, C. C., Heyes, A. L., & Feist, J. P. (2014). Thermal history sensors for non-destructive temperature measurements in harsh environments. In D. E. Chimenti, L. J. Bond, & D. O. Thompson (Eds.), 40th Annual Review of Progress in Quantitative Nondestructive Evaluation: Incorporating the 10th International Conference on Barkhausen Noise and Micromagnetic Testing (Vol. 33A & 33B, pp. 1609-1616). (AIP Conference Proceedings; Vol. 1581). NY, USA. https://doi.org/10.1063/1.4865016