scholarly journals On the automation of thermographic phosphor calibration

2014 ◽  
Author(s):  
F.A. Nada ◽  
M. Richter ◽  
C. Knappe ◽  
M. Aldén ◽  
X. Xu
Keyword(s):  
Thermographic Phosphor

Gas-phase thermometry in a high-pressure cell using BaMgAl10O17:Eu as a thermographic phosphor

2013 ◽  
Vol 111 (3) ◽  
pp. 469-481 ◽  
Author(s):  
J. P. J. van Lipzig ◽  
M. Yu ◽  
N. J. Dam ◽  
C. C. M. Luijten ◽  
L. P. H. de Goey
Keyword(s):  
High Pressure ◽  
Gas Phase ◽  
High Pressure Cell ◽  
Pressure Cell ◽  
Thermographic Phosphor

In-cylinder thermographic PIV combined with phosphor thermometry using ZnO:Zn

2021 ◽  
pp. 146808742110485
Author(s):  
Andreas Kopf ◽  
Valerio Frattina ◽  
Michele Bardi ◽  
Torsten Endres ◽  
Gilles Bruneaux ◽  
...  
Keyword(s):  
Fuel Injection ◽  
Thermal Quenching ◽  
Temperature Fields ◽  
Ratio Method ◽  
Calibration Data ◽  
Two Dimensional ◽  
Ic Engine ◽  
Thermographic Phosphor ◽  
Phosphor Thermometry ◽  
Coated Surfaces

Two-dimensional thermographic particle image velocimetry (T-PIV) is presented for the in situ measurement in optically accessible internal combustion (IC) engines. Temperature and velocity measurements are combined using thermographic phosphor particles as tracers for PIV. For three commercially available phosphors (BAM:Eu2+, ZnO, and ZnO:Zn), temperature sensitivity, luminescence intensity at high temperatures and laser-fluence dependence were evaluated for phosphor-coated surfaces in a high-temperature cell. ZnO:Zn was identified as the best-suited candidate for engine in-cylinder measurements and further analyzed in the aerosolized state at temperatures up to 775 K to generate calibration data required for signal quantification in engine experiments. T-PIV was successfully applied in the IC engine to simultaneously obtain instantaneous two-dimensional velocity and temperature fields using the intensity-ratio method. Despite a measurement uncertainty (±1σ basis) of only 3.7 K at 317 K (1.2%) to 24.4 K (4.2%) at 575 K, this technique suffers from low signal intensities due to thermal quenching at increasing temperatures, which leads to reduced accuracy as the piston approaches top dead center. Thermographic measurements were successful to visualize local temperature changes due to evaporative cooling after fuel injection. The measured mean gas temperatures agreed well with zero-dimensional simulations that use additional wall-temperature measurements from thermographic phosphor measurements based on the lifetime method as input for heat transfer calculations.

Measurement of the Surface of Textiles During Microwave Drying Using a Thermographic Phosphor

1990 ◽  
Vol 25 (4) ◽  
pp. 230-235 ◽  
Author(s):  
M. Dever ◽  
A. Bugos ◽  
F. Dyer ◽  
M. Cates ◽  
K. Tobin ◽  
...  
Keyword(s):  
Microwave Drying ◽  
Thermographic Phosphor

Synthesis and characterization of flexible thermographic phosphor temperature sensors

2016 ◽  
Vol 60 ◽  
pp. 50-56 ◽  
Author(s):  
Katherine E. Mitchell ◽  
Victor Gardner ◽  
Stephen W. Allison ◽  
Firouzeh Sabri
Keyword(s):  
Temperature Sensors ◽  
Synthesis And Characterization ◽  
Thermographic Phosphor

Luminescence Properties of the Thermographic Phosphors Dy3+:YAG and Tm3+:YAG for the Application in High Temperature Systems

2015 ◽  
Vol 229 (6) ◽  
Author(s):  
Gordana Jovicic ◽  
Lars Zigan ◽  
Stefan Will ◽  
Alfred Leipertz
Keyword(s):  
High Temperature ◽  
Dopant Concentration ◽  
Luminescence Decay ◽  
Host Crystal ◽  
Thermographic Phosphors ◽  
Thermographic Phosphor ◽  
Intensity Ratios ◽  
High Temperature Sensitivity ◽  
Phosphorescence Spectra ◽  
Temperature Applications

AbstractThe high temperature sensitivity of the luminescence emission of thermographic phosphor (TP) particles favours its utilization for the measurement of wall or gas temperatures in combustion devices. The present work focuses on the luminescence behavior and suitability of two lanthanide ion types (Tm and Dy) doped in a YAG host crystal for high temperature applications. The Dy:YAG is a well-known thermographic phosphor and is used here as a reference for the comparison with Tm:YAG TP. Additionally its dopant concentration is varied to improve its signal intensity for high temperature applications. For the studied thermographic phosphors phosphorescence spectra, intensity ratios and luminescence decay time are characterized for a wide temperature range up to 1573 K.

scholarly journals Application of structured illumination to gas phase thermometry using thermographic phosphor particles: a study for averaged imaging

2017 ◽  
Vol 58 (7) ◽  
Author(s):  
Florian Zentgraf ◽  
Michael Stephan ◽  
Edouard Berrocal ◽  
Barbara Albert ◽  
Benjamin Böhm ◽  
...  
Keyword(s):  
Gas Phase ◽  
Structured Illumination ◽  
Thermographic Phosphor

Optical temperature sensing using a new thermographic phosphor

2015 ◽  
Vol 233 ◽  
pp. 324-329 ◽  
Author(s):  
F. Venturini ◽  
R. Bürgi ◽  
S.M. Borisov ◽  
I. Klimant
Keyword(s):  
Temperature Sensing ◽  
Thermographic Phosphor
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