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Temperature measurements of combustible and non-combustible surfaces using laser induced phosphorescence

Omrane, Alaa LU ; Ossler, Frederik LU and Aldén, Marcus LU (2004) In Experimental Thermal and Fluid Science 28(7). p.669-676
Abstract
In recent years, thermographic phosphors used for surface temperature measurements have been developed to suit combustion applications. Pulsed ultraviolet laser radiation at 266 nm and 7 ns duration was used to excite a thermographic phosphor, Mg4FGeO6:Mn, which was adapted to the surface of the investigated material. The laser-induced emission from the phosphor was recorded. A calibration of the phosphorescence lifetime and spectral properties against temperature allowed surface temperature measurements between 298 and 873 K. The techniques were successfully used in a flame spread scenario for two-dimensional measurements of surface temperature on a low-density fiber board. The phosphorescence images were obtained with eight consecutively... (More)
In recent years, thermographic phosphors used for surface temperature measurements have been developed to suit combustion applications. Pulsed ultraviolet laser radiation at 266 nm and 7 ns duration was used to excite a thermographic phosphor, Mg4FGeO6:Mn, which was adapted to the surface of the investigated material. The laser-induced emission from the phosphor was recorded. A calibration of the phosphorescence lifetime and spectral properties against temperature allowed surface temperature measurements between 298 and 873 K. The techniques were successfully used in a flame spread scenario for two-dimensional measurements of surface temperature on a low-density fiber board. The phosphorescence images were obtained with eight consecutively gated CCD detectors enable pixel by pixel-lifetime evaluation of the phosphorescence by interpolating an exponentialdecay curve to the counts of the corresponding pixel positions of the sequential CCD images. The best precision, better than +/-5 K, was obtained at these temperatures. The technique was also applied to temperature measurements of decomposing materials in a pyrolysis oven. The material investigated was birch particles. Recent development of the technique has allowed other applications, e.g., to such as engine valve and droplets temperature measurements. (C) 2004 Elsevier Inc. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
laser diagnostics, temperature measurements, combustion diagnostics
in
Experimental Thermal and Fluid Science
volume
28
issue
7
pages
669 - 676
publisher
Elsevier
external identifiers
  • wos:000223150200002
  • scopus:3242673616
ISSN
1879-2286
DOI
10.1016/j.expthermflusci.2003.12.003
language
English
LU publication?
yes
id
011193d6-c07b-42fd-8eec-66dc6bc2f70a (old id 271177)
date added to LUP
2007-12-05 11:58:49
date last changed
2017-10-29 03:42:04
@article{011193d6-c07b-42fd-8eec-66dc6bc2f70a,
  abstract     = {In recent years, thermographic phosphors used for surface temperature measurements have been developed to suit combustion applications. Pulsed ultraviolet laser radiation at 266 nm and 7 ns duration was used to excite a thermographic phosphor, Mg4FGeO6:Mn, which was adapted to the surface of the investigated material. The laser-induced emission from the phosphor was recorded. A calibration of the phosphorescence lifetime and spectral properties against temperature allowed surface temperature measurements between 298 and 873 K. The techniques were successfully used in a flame spread scenario for two-dimensional measurements of surface temperature on a low-density fiber board. The phosphorescence images were obtained with eight consecutively gated CCD detectors enable pixel by pixel-lifetime evaluation of the phosphorescence by interpolating an exponentialdecay curve to the counts of the corresponding pixel positions of the sequential CCD images. The best precision, better than +/-5 K, was obtained at these temperatures. The technique was also applied to temperature measurements of decomposing materials in a pyrolysis oven. The material investigated was birch particles. Recent development of the technique has allowed other applications, e.g., to such as engine valve and droplets temperature measurements. (C) 2004 Elsevier Inc. All rights reserved.},
  author       = {Omrane, Alaa and Ossler, Frederik and Aldén, Marcus},
  issn         = {1879-2286},
  keyword      = {laser diagnostics,temperature measurements,combustion diagnostics},
  language     = {eng},
  number       = {7},
  pages        = {669--676},
  publisher    = {Elsevier},
  series       = {Experimental Thermal and Fluid Science},
  title        = {Temperature measurements of combustible and non-combustible surfaces using laser induced phosphorescence},
  url          = {http://dx.doi.org/10.1016/j.expthermflusci.2003.12.003},
  volume       = {28},
  year         = {2004},
}