APPLICATION OF STRESS WAVES TO ESTIMATE MOISTURE CONTENT IN Eucalyptus WOOD
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Cerne (Online) |
Texto Completo: | https://cerne.ufla.br/site/index.php/CERNE/article/view/177 |
Resumo: | Accurate monitoring of moisture content in Eucalyptus wood during the drying process is critical to improving product quality. And as electric meters lose accuracy in some moisture ranges, in this work a Stress Wave Timer was used to try and assess the possibility of estimating wood moisture based on variation in the propagation velocity of stress waves in two Eucalyptus species. Effects of knot area and board basic density on the propagation of stress waves were also analyzed, using analysis of variance and observing mean values for these characteristics. Equations were fitted and wood moisture content could be estimated by the stress wave propagation method using nonlinear models or a multiple linear model, with wave propagation velocity, basic density and knot area being used as independent variables. Best fits were obtained for boards showing no visible defects (knots, cracks etc.). The propagation velocity of stress waves through the wood was found to vary as a function of the knot area, wood density and anatomical orientation (visual analysis) of the boards. Knots had a stronger influence on wave transmission when they were present in radially cut boards. |
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APPLICATION OF STRESS WAVES TO ESTIMATE MOISTURE CONTENT IN Eucalyptus WOODWood moisture contentbasic densityknotsEucalyptusstress wave timerAccurate monitoring of moisture content in Eucalyptus wood during the drying process is critical to improving product quality. And as electric meters lose accuracy in some moisture ranges, in this work a Stress Wave Timer was used to try and assess the possibility of estimating wood moisture based on variation in the propagation velocity of stress waves in two Eucalyptus species. Effects of knot area and board basic density on the propagation of stress waves were also analyzed, using analysis of variance and observing mean values for these characteristics. Equations were fitted and wood moisture content could be estimated by the stress wave propagation method using nonlinear models or a multiple linear model, with wave propagation velocity, basic density and knot area being used as independent variables. Best fits were obtained for boards showing no visible defects (knots, cracks etc.). The propagation velocity of stress waves through the wood was found to vary as a function of the knot area, wood density and anatomical orientation (visual analysis) of the boards. Knots had a stronger influence on wave transmission when they were present in radially cut boards. CERNECERNE2015-05-19info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://cerne.ufla.br/site/index.php/CERNE/article/view/177CERNE; Vol. 15 No. 4 (2009); 430-438CERNE; v. 15 n. 4 (2009); 430-4382317-63420104-7760reponame:Cerne (Online)instname:Universidade Federal de Lavras (UFLA)instacron:UFLAporhttps://cerne.ufla.br/site/index.php/CERNE/article/view/177/150Copyright (c) 2015 Clair Rogério da Cruz, Graciela Inês Bolzon de Muniz, José Tarcisio Lima, Daniel Furtado Ferreirainfo:eu-repo/semantics/openAccessCruz, Clair Rogério daMuniz, Graciela Inês Bolzon deLima, José TarcisioFerreira, Daniel Furtado2015-11-06T13:44:36Zoai:cerne.ufla.br:article/177Revistahttps://cerne.ufla.br/site/index.php/CERNEPUBhttps://cerne.ufla.br/site/index.php/CERNE/oaicerne@dcf.ufla.br||cerne@dcf.ufla.br2317-63420104-7760opendoar:2024-05-21T19:53:35.969703Cerne (Online) - Universidade Federal de Lavras (UFLA)true |
dc.title.none.fl_str_mv |
APPLICATION OF STRESS WAVES TO ESTIMATE MOISTURE CONTENT IN Eucalyptus WOOD |
title |
APPLICATION OF STRESS WAVES TO ESTIMATE MOISTURE CONTENT IN Eucalyptus WOOD |
spellingShingle |
APPLICATION OF STRESS WAVES TO ESTIMATE MOISTURE CONTENT IN Eucalyptus WOOD Cruz, Clair Rogério da Wood moisture content basic density knots Eucalyptus stress wave timer |
title_short |
APPLICATION OF STRESS WAVES TO ESTIMATE MOISTURE CONTENT IN Eucalyptus WOOD |
title_full |
APPLICATION OF STRESS WAVES TO ESTIMATE MOISTURE CONTENT IN Eucalyptus WOOD |
title_fullStr |
APPLICATION OF STRESS WAVES TO ESTIMATE MOISTURE CONTENT IN Eucalyptus WOOD |
title_full_unstemmed |
APPLICATION OF STRESS WAVES TO ESTIMATE MOISTURE CONTENT IN Eucalyptus WOOD |
title_sort |
APPLICATION OF STRESS WAVES TO ESTIMATE MOISTURE CONTENT IN Eucalyptus WOOD |
author |
Cruz, Clair Rogério da |
author_facet |
Cruz, Clair Rogério da Muniz, Graciela Inês Bolzon de Lima, José Tarcisio Ferreira, Daniel Furtado |
author_role |
author |
author2 |
Muniz, Graciela Inês Bolzon de Lima, José Tarcisio Ferreira, Daniel Furtado |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Cruz, Clair Rogério da Muniz, Graciela Inês Bolzon de Lima, José Tarcisio Ferreira, Daniel Furtado |
dc.subject.por.fl_str_mv |
Wood moisture content basic density knots Eucalyptus stress wave timer |
topic |
Wood moisture content basic density knots Eucalyptus stress wave timer |
description |
Accurate monitoring of moisture content in Eucalyptus wood during the drying process is critical to improving product quality. And as electric meters lose accuracy in some moisture ranges, in this work a Stress Wave Timer was used to try and assess the possibility of estimating wood moisture based on variation in the propagation velocity of stress waves in two Eucalyptus species. Effects of knot area and board basic density on the propagation of stress waves were also analyzed, using analysis of variance and observing mean values for these characteristics. Equations were fitted and wood moisture content could be estimated by the stress wave propagation method using nonlinear models or a multiple linear model, with wave propagation velocity, basic density and knot area being used as independent variables. Best fits were obtained for boards showing no visible defects (knots, cracks etc.). The propagation velocity of stress waves through the wood was found to vary as a function of the knot area, wood density and anatomical orientation (visual analysis) of the boards. Knots had a stronger influence on wave transmission when they were present in radially cut boards. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-05-19 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://cerne.ufla.br/site/index.php/CERNE/article/view/177 |
url |
https://cerne.ufla.br/site/index.php/CERNE/article/view/177 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://cerne.ufla.br/site/index.php/CERNE/article/view/177/150 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
CERNE CERNE |
publisher.none.fl_str_mv |
CERNE CERNE |
dc.source.none.fl_str_mv |
CERNE; Vol. 15 No. 4 (2009); 430-438 CERNE; v. 15 n. 4 (2009); 430-438 2317-6342 0104-7760 reponame:Cerne (Online) instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Cerne (Online) |
collection |
Cerne (Online) |
repository.name.fl_str_mv |
Cerne (Online) - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
cerne@dcf.ufla.br||cerne@dcf.ufla.br |
_version_ |
1799874939565637632 |