Visualization of two-dimensional temperature field on a plate with normal impingement of a supersonic jet

Thermographic phosphors utilize the luminescence properties of doped ceramic materials and can be used to measure surface temperatures as a non-contact temperature measurement method. These phosphor materials are coated onto the object of interest and are excited by a short UV laser pulse, and exhib...

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Bibliographic Details
Published inJournal of visualization Vol. 26; no. 4; pp. 841 - 850
Main Authors Mohammadshahi, Shabnam, Samsam-Khayani, Hadi, Chen, Binqi, Cai, Tao, Kim, Kyung Chun
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.08.2023
Springer Nature B.V
Subjects
Classical and Continuum Physics
Computer Imaging
Engineering
Engineering Fluid Dynamics
Engineering Thermodynamics
Heat and Mass Transfer
High speed cameras
Jet impingement
Luminescence
Luminous intensity
Magnesium
Measurement methods
Optical properties
Pattern Recognition and Graphics
Phosphor thermography
Phosphors
Photomultiplier tubes
Regular Paper
Surface temperature
Temperature
Temperature dependence
Temperature distribution
Temperature measurement
Temperature sensors
Thermometers
Ultraviolet lasers
Vision
Non-contact temperature measurement
Thermographic phosphor
Phosphor thermometry
Lifetime method
Supersonic jet
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Summary:Thermographic phosphors utilize the luminescence properties of doped ceramic materials and can be used to measure surface temperatures as a non-contact temperature measurement method. These phosphor materials are coated onto the object of interest and are excited by a short UV laser pulse, and exhibit a temperature-sensitive exponential decay in emission when their excitation has stopped. This article first explores the temperature dependence of different binders to fabricate a cost-effective two-dimensional temperature measurement method based on lifetime technique under normal supersonic jet impingement. Different phosphor-coated samples by magnesium fluorogermanate thermographic phosphors were analyzed using a spectrometer and a photomultiplier to study the intensity of emitted light and temperatures at discrete points, respectively. Then, a high-speed camera is used to measure the surface temperature distributions. In the end, the phosphor coating on test specimens was installed under a normal supersonic jet to confirm the coating stability, which is essential for the applications as the temperature sensor. Graphical abstract
ISSN:1343-8875
1875-8975
DOI:10.1007/s12650-022-00907-x