Measurement of in-plane thermal diffusivity of solids moving at constant velocity using laser spot infrared thermography

In this work, an infrared thermography setup is proposed to measure the in-plane thermal diffusivity of (an)isotropic samples that are moving at constant velocity, as it is the case of in-line production or in-line quality control processes in factories. The experiment consists in heating the moving...

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Autores: Bedoya Pérez, Adrián Felipe, González, Jorge, Rodríguez Aseguinolaza, Javier, Mendioroz Astigarraga, María Aránzazu, Sommier, Alain, Batsale, Jean-Christophe, Pradere, Christophe, Salazar Hernández, Agustín
Tipo de recurso: artículo
Fecha de publicación:2018
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/63089
Acceso en línea:http://hdl.handle.net/10810/63089
Access Level:acceso abierto
Palabra clave:infrared thermography
flying spot
thermal diffusivity
nondestructive evaluation
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spelling Measurement of in-plane thermal diffusivity of solids moving at constant velocity using laser spot infrared thermographyBedoya Pérez, Adrián FelipeGonzález, JorgeRodríguez Aseguinolaza, JavierMendioroz Astigarraga, María AránzazuSommier, AlainBatsale, Jean-ChristophePradere, ChristopheSalazar Hernández, Agustíninfrared thermographyflying spotthermal diffusivitynondestructive evaluationIn this work, an infrared thermography setup is proposed to measure the in-plane thermal diffusivity of (an)isotropic samples that are moving at constant velocity, as it is the case of in-line production or in-line quality control processes in factories. The experiment consists in heating the moving sample with a focused laser spot, which remains at rest, and recording the surface temperature by an infrared camera. An analytical expression for the surface temperature of the moving sample has been obtained. By analyzing the surface temperature in logarithmic scale, three simple linear relations are obtained, whose slopes give the thermal diffusivity in the direction of the sample movement and in the perpendicular direction. These three linear methods, which are not disturbed by heat losses by convection and radiation, are valid for both opaque and semitransparent samples. Measurements performed on calibrated samples confirm the validity of the methods, which are also valid when the sample is at rest and the laser spot scans its surface at constant velocity, the so-called ‘‘flying spot” technique.This work has been supported by Ministerio de Economía y Competitividad (DPI2016-77719-R, AEI/FEDER, UE), by Universidad del País Vasco UPV/EHU (GIU16/33) and by Conacyt (Beca Mixta 2017 Movilidad en el extranjero).Elsevier202320232018info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/63089reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MINECO/DPI2016-77719-R,/https://www.sciencedirect.com/science/article/pii/S0263224118310674info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/© 2018 Elsevier under CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)oai:addi.ehu.eus:10810/630892026-06-18T09:23:17Z
dc.title.none.fl_str_mv Measurement of in-plane thermal diffusivity of solids moving at constant velocity using laser spot infrared thermography
title Measurement of in-plane thermal diffusivity of solids moving at constant velocity using laser spot infrared thermography
spellingShingle Measurement of in-plane thermal diffusivity of solids moving at constant velocity using laser spot infrared thermography
Bedoya Pérez, Adrián Felipe
infrared thermography
flying spot
thermal diffusivity
nondestructive evaluation
title_short Measurement of in-plane thermal diffusivity of solids moving at constant velocity using laser spot infrared thermography
title_full Measurement of in-plane thermal diffusivity of solids moving at constant velocity using laser spot infrared thermography
title_fullStr Measurement of in-plane thermal diffusivity of solids moving at constant velocity using laser spot infrared thermography
title_full_unstemmed Measurement of in-plane thermal diffusivity of solids moving at constant velocity using laser spot infrared thermography
title_sort Measurement of in-plane thermal diffusivity of solids moving at constant velocity using laser spot infrared thermography
dc.creator.none.fl_str_mv Bedoya Pérez, Adrián Felipe
González, Jorge
Rodríguez Aseguinolaza, Javier
Mendioroz Astigarraga, María Aránzazu
Sommier, Alain
Batsale, Jean-Christophe
Pradere, Christophe
Salazar Hernández, Agustín
author Bedoya Pérez, Adrián Felipe
author_facet Bedoya Pérez, Adrián Felipe
González, Jorge
Rodríguez Aseguinolaza, Javier
Mendioroz Astigarraga, María Aránzazu
Sommier, Alain
Batsale, Jean-Christophe
Pradere, Christophe
Salazar Hernández, Agustín
author_role author
author2 González, Jorge
Rodríguez Aseguinolaza, Javier
Mendioroz Astigarraga, María Aránzazu
Sommier, Alain
Batsale, Jean-Christophe
Pradere, Christophe
Salazar Hernández, Agustín
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv infrared thermography
flying spot
thermal diffusivity
nondestructive evaluation
topic infrared thermography
flying spot
thermal diffusivity
nondestructive evaluation
description In this work, an infrared thermography setup is proposed to measure the in-plane thermal diffusivity of (an)isotropic samples that are moving at constant velocity, as it is the case of in-line production or in-line quality control processes in factories. The experiment consists in heating the moving sample with a focused laser spot, which remains at rest, and recording the surface temperature by an infrared camera. An analytical expression for the surface temperature of the moving sample has been obtained. By analyzing the surface temperature in logarithmic scale, three simple linear relations are obtained, whose slopes give the thermal diffusivity in the direction of the sample movement and in the perpendicular direction. These three linear methods, which are not disturbed by heat losses by convection and radiation, are valid for both opaque and semitransparent samples. Measurements performed on calibrated samples confirm the validity of the methods, which are also valid when the sample is at rest and the laser spot scans its surface at constant velocity, the so-called ‘‘flying spot” technique.
publishDate 2018
dc.date.none.fl_str_mv 2018
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/63089
url http://hdl.handle.net/10810/63089
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MINECO/DPI2016-77719-R,/
https://www.sciencedirect.com/science/article/pii/S0263224118310674
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
© 2018 Elsevier under CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
© 2018 Elsevier under CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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