Active IR Thermography Evaluation of Coating Thickness by Determining Apparent Thermal Effusivity
Pulsed thermography is a common technique for nondestructive testing (NDT) of materials. This study presents the apparent effusivity method for the quantitative evaluation of coating thickness in a one-sided thermal NDT procedure. The proposed algorithm is based on determining a threshold value of a...
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doaj-c6dd98f08a22456cbe8ac88a91949f282020-11-25T03:48:07ZengMDPI AGMaterials1996-19442020-09-01134057405710.3390/ma13184057Active IR Thermography Evaluation of Coating Thickness by Determining Apparent Thermal EffusivityAlexey Moskovchenko0Vladimir Vavilov1Michal Švantner2Lukáš Muzika3Šárka Houdková4New Technologies—Research Centre, University of West Bohemia, Univerzitní 8, 301 00 Plzeň, Czech RepublicSchool of Nondestructive Testing, Tomsk Polytechnic University, 30, Lenin Avenue, 634050 Tomsk, RussiaNew Technologies—Research Centre, University of West Bohemia, Univerzitní 8, 301 00 Plzeň, Czech RepublicNew Technologies—Research Centre, University of West Bohemia, Univerzitní 8, 301 00 Plzeň, Czech RepublicNew Technologies—Research Centre, University of West Bohemia, Univerzitní 8, 301 00 Plzeň, Czech RepublicPulsed thermography is a common technique for nondestructive testing (NDT) of materials. This study presents the apparent effusivity method for the quantitative evaluation of coating thickness in a one-sided thermal NDT procedure. The proposed algorithm is based on determining a threshold value of apparent effusivity, which can be found for particular coating-on-substrate structures. It has been found that the square root of the time at which the apparent effusivity curve reaches this threshold is proportional to the coating thickness. The efficiency of the proposed approach is demonstrated by analytical modeling and experimentation performed on thermally-sprayed coatings.https://www.mdpi.com/1996-1944/13/18/4057pulse thermographycoating thicknessapparent effusivitythermal NDTthermally sprayed coatingsthermographic testing |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Alexey Moskovchenko Vladimir Vavilov Michal Švantner Lukáš Muzika Šárka Houdková |
spellingShingle |
Alexey Moskovchenko Vladimir Vavilov Michal Švantner Lukáš Muzika Šárka Houdková Active IR Thermography Evaluation of Coating Thickness by Determining Apparent Thermal Effusivity Materials pulse thermography coating thickness apparent effusivity thermal NDT thermally sprayed coatings thermographic testing |
author_facet |
Alexey Moskovchenko Vladimir Vavilov Michal Švantner Lukáš Muzika Šárka Houdková |
author_sort |
Alexey Moskovchenko |
title |
Active IR Thermography Evaluation of Coating Thickness by Determining Apparent Thermal Effusivity |
title_short |
Active IR Thermography Evaluation of Coating Thickness by Determining Apparent Thermal Effusivity |
title_full |
Active IR Thermography Evaluation of Coating Thickness by Determining Apparent Thermal Effusivity |
title_fullStr |
Active IR Thermography Evaluation of Coating Thickness by Determining Apparent Thermal Effusivity |
title_full_unstemmed |
Active IR Thermography Evaluation of Coating Thickness by Determining Apparent Thermal Effusivity |
title_sort |
active ir thermography evaluation of coating thickness by determining apparent thermal effusivity |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2020-09-01 |
description |
Pulsed thermography is a common technique for nondestructive testing (NDT) of materials. This study presents the apparent effusivity method for the quantitative evaluation of coating thickness in a one-sided thermal NDT procedure. The proposed algorithm is based on determining a threshold value of apparent effusivity, which can be found for particular coating-on-substrate structures. It has been found that the square root of the time at which the apparent effusivity curve reaches this threshold is proportional to the coating thickness. The efficiency of the proposed approach is demonstrated by analytical modeling and experimentation performed on thermally-sprayed coatings. |
topic |
pulse thermography coating thickness apparent effusivity thermal NDT thermally sprayed coatings thermographic testing |
url |
https://www.mdpi.com/1996-1944/13/18/4057 |
work_keys_str_mv |
AT alexeymoskovchenko activeirthermographyevaluationofcoatingthicknessbydeterminingapparentthermaleffusivity AT vladimirvavilov activeirthermographyevaluationofcoatingthicknessbydeterminingapparentthermaleffusivity AT michalsvantner activeirthermographyevaluationofcoatingthicknessbydeterminingapparentthermaleffusivity AT lukasmuzika activeirthermographyevaluationofcoatingthicknessbydeterminingapparentthermaleffusivity AT sarkahoudkova activeirthermographyevaluationofcoatingthicknessbydeterminingapparentthermaleffusivity |
_version_ |
1724500144785719296 |