Measuring the water content in wood using step-heating thermography and speckle patterns-preliminary results

The relationship between wood and its degree of humidity is one of the most important aspects of its use in construction and restoration. The wood presents a behavior similar to a sponge, therefore, moisture is related to its expansion and contraction. The nondestructive evaluation (NDE) of the amou...

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Autores: Madruga Saavedra, Francisco Javier|||0000-0002-2853-5977, Sfarra, Stefano, Perilli, Stefano, Pivarciová, Elena, López Higuera, José Miguel|||0000-0002-8615-8487
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/18084
Acceso en línea:http://hdl.handle.net/10902/18084
Access Level:acceso abierto
Palabra clave:Infrared thermography
Speckle inspection
Wooden structures
Nondestructive evaluation
Moisture
Defect
Heat and mass transfer
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spelling Measuring the water content in wood using step-heating thermography and speckle patterns-preliminary resultsMadruga Saavedra, Francisco Javier|||0000-0002-2853-5977Sfarra, StefanoPerilli, StefanoPivarciová, ElenaLópez Higuera, José Miguel|||0000-0002-8615-8487Infrared thermographySpeckle inspectionWooden structuresNondestructive evaluationMoistureDefectHeat and mass transferThe relationship between wood and its degree of humidity is one of the most important aspects of its use in construction and restoration. The wood presents a behavior similar to a sponge, therefore, moisture is related to its expansion and contraction. The nondestructive evaluation (NDE) of the amount of moisture in wood materials allows to define, e.g., the restoration procedures of buildings or artworks. In this work, an integrated study of two non-contact techniques is presented. Infrared thermography (IRT) was able to retrieve thermal parameters of the wood related to the amount of water added to the samples, while the interference pattern generated by speckles was used to quantify the expansion and contraction of wood that can be related to the amount of water. In twenty-seven wooded samples, a known quantity of water was added in a controlled manner. By applying advanced image processing to thermograms and specklegrams, it was possible to determine fundamental values controlling both the absorption of water and the main thermophysical parameters that link the samples. On the one hand, results here shown should be considered preliminary because the experimental values obtained by IRT need to be optimized for low water contents introduced into the samples. On the other hand, speckle interferometry by applying an innovative procedure provided robust results for both high and low water contents.This work was supported in part by the Spanish Economy and Competitiveness Minister under project TEC2016-76021-C2-2-R; Jose Castillejo Grant CAS17-00216 by the Spanish Minister of Education, Culture and Sports.MDPIUniversidad de Cantabria20202020-01-06journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttp://hdl.handle.net/10902/18084Sensors, 2020, 20(1), 316reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/180842026-06-02T12:39:31Z
dc.title.none.fl_str_mv Measuring the water content in wood using step-heating thermography and speckle patterns-preliminary results
title Measuring the water content in wood using step-heating thermography and speckle patterns-preliminary results
spellingShingle Measuring the water content in wood using step-heating thermography and speckle patterns-preliminary results
Madruga Saavedra, Francisco Javier|||0000-0002-2853-5977
Infrared thermography
Speckle inspection
Wooden structures
Nondestructive evaluation
Moisture
Defect
Heat and mass transfer
title_short Measuring the water content in wood using step-heating thermography and speckle patterns-preliminary results
title_full Measuring the water content in wood using step-heating thermography and speckle patterns-preliminary results
title_fullStr Measuring the water content in wood using step-heating thermography and speckle patterns-preliminary results
title_full_unstemmed Measuring the water content in wood using step-heating thermography and speckle patterns-preliminary results
title_sort Measuring the water content in wood using step-heating thermography and speckle patterns-preliminary results
dc.creator.none.fl_str_mv Madruga Saavedra, Francisco Javier|||0000-0002-2853-5977
Sfarra, Stefano
Perilli, Stefano
Pivarciová, Elena
López Higuera, José Miguel|||0000-0002-8615-8487
author Madruga Saavedra, Francisco Javier|||0000-0002-2853-5977
author_facet Madruga Saavedra, Francisco Javier|||0000-0002-2853-5977
Sfarra, Stefano
Perilli, Stefano
Pivarciová, Elena
López Higuera, José Miguel|||0000-0002-8615-8487
author_role author
author2 Sfarra, Stefano
Perilli, Stefano
Pivarciová, Elena
López Higuera, José Miguel|||0000-0002-8615-8487
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidad de Cantabria
dc.subject.none.fl_str_mv Infrared thermography
Speckle inspection
Wooden structures
Nondestructive evaluation
Moisture
Defect
Heat and mass transfer
topic Infrared thermography
Speckle inspection
Wooden structures
Nondestructive evaluation
Moisture
Defect
Heat and mass transfer
description The relationship between wood and its degree of humidity is one of the most important aspects of its use in construction and restoration. The wood presents a behavior similar to a sponge, therefore, moisture is related to its expansion and contraction. The nondestructive evaluation (NDE) of the amount of moisture in wood materials allows to define, e.g., the restoration procedures of buildings or artworks. In this work, an integrated study of two non-contact techniques is presented. Infrared thermography (IRT) was able to retrieve thermal parameters of the wood related to the amount of water added to the samples, while the interference pattern generated by speckles was used to quantify the expansion and contraction of wood that can be related to the amount of water. In twenty-seven wooded samples, a known quantity of water was added in a controlled manner. By applying advanced image processing to thermograms and specklegrams, it was possible to determine fundamental values controlling both the absorption of water and the main thermophysical parameters that link the samples. On the one hand, results here shown should be considered preliminary because the experimental values obtained by IRT need to be optimized for low water contents introduced into the samples. On the other hand, speckle interferometry by applying an innovative procedure provided robust results for both high and low water contents.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-01-06
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10902/18084
url http://hdl.handle.net/10902/18084
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv Sensors, 2020, 20(1), 316
reponame:UCrea Repositorio Abierto de la Universidad de Cantabria
instname:Universidad de Cantabria (UC)
instname_str Universidad de Cantabria (UC)
reponame_str UCrea Repositorio Abierto de la Universidad de Cantabria
collection UCrea Repositorio Abierto de la Universidad de Cantabria
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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