Drying influence on the development of cracks in eucalyptus logs
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFMG |
Texto Completo: | https://doi.org/10.15376/biores.14.1.220-233 http://hdl.handle.net/1843/40363 https://orcid.org/0000-0001-5576-492X https://orcid.org/ 0000-0001-5239-9592 https://orcid.org/0000-0001-5196-0851 |
Resumo: | The aim of this study was to evaluate the effect of the moisture loss, diameter, and wood density on the appearance of surface cracks and end splits in Eucalyptus urophylla logs. The drying and emergence of defects were evaluated in 108 logs with diameters ranging from 60 mm to 150 mm from the initial moisture content to the equilibrium moisture content. The defects were measured during this time. Smaller diameter logs dried faster than larger diameter logs and took less time to reach the fiber saturation point. Surface cracks tended to develop during the loss of bound water. End splits developed during free water loss and continued to appear during bound water loss. Smaller diameters presented higher percentages of surface cracks compared with larger diameters, while larger diameters had a tendency for higher percentages of end splits compared with smaller diameters. The density did not influence the total emergence of end splits, but it did influence the total emergence of surface cracks, indicating a possibility for the selection of genetic material with lower tendency for cracking. Overall, the results reinforce the need to control drying at its beginning in order to decrease the risk of defects. |
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2022-03-23T14:53:45Z2022-03-23T14:53:45Z2019141220233https://doi.org/10.15376/biores.14.1.220-23319302126http://hdl.handle.net/1843/40363https://orcid.org/0000-0001-5576-492Xhttps://orcid.org/ 0000-0001-5239-9592https://orcid.org/0000-0001-5196-0851The aim of this study was to evaluate the effect of the moisture loss, diameter, and wood density on the appearance of surface cracks and end splits in Eucalyptus urophylla logs. The drying and emergence of defects were evaluated in 108 logs with diameters ranging from 60 mm to 150 mm from the initial moisture content to the equilibrium moisture content. The defects were measured during this time. Smaller diameter logs dried faster than larger diameter logs and took less time to reach the fiber saturation point. Surface cracks tended to develop during the loss of bound water. End splits developed during free water loss and continued to appear during bound water loss. Smaller diameters presented higher percentages of surface cracks compared with larger diameters, while larger diameters had a tendency for higher percentages of end splits compared with smaller diameters. The density did not influence the total emergence of end splits, but it did influence the total emergence of surface cracks, indicating a possibility for the selection of genetic material with lower tendency for cracking. Overall, the results reinforce the need to control drying at its beginning in order to decrease the risk of defects.O objetivo deste estudo foi avaliar o efeito da perda de umidade, diâmetro e densidade da madeira no aparecimento de trincas superficiais e rachaduras em toras de Eucalyptus urophylla. A secagem e a emergência de defeitos foram avaliadas em 108 toras com diâmetros variando de 60 mm a 150 mm desde a umidade inicial até a umidade de equilíbrio. Os defeitos foram medidos durante este tempo. As toras de menor diâmetro secaram mais rápido que as de maior diâmetro e levaram menos tempo para atingir o ponto de saturação da fibra. As rachaduras superficiais tendem a se desenvolver durante a perda de água ligada. As divisões nas extremidades se desenvolveram durante a perda de água livre e continuaram a aparecer durante a perda de água ligada. Diâmetros menores apresentaram maiores porcentagens de trincas superficiais em comparação com diâmetros maiores, enquanto diâmetros maiores apresentaram tendência a maiores porcentagens de fendas de extremidade em comparação com diâmetros menores. A densidade não influenciou na emergência total de rachaduras nas extremidades, mas sim na emergência total de trincas superficiais, indicando a possibilidade de seleção de material genético com menor tendência a trincas. No geral, os resultados reforçam a necessidade de controlar a secagem no início para diminuir o risco de defeitos.Outra AgênciaengUniversidade Federal de Minas GeraisUFMGBrasilICA - INSTITUTO DE CIÊNCIAS AGRÁRIASBioresourcesMadeira - TestesMadeira - DefeitosToras de madeirabound waterRoundwood DiameterWood Defectsend splitsFree watersurface cracksDrying influence on the development of cracks in eucalyptus logsInfluência da secagem no desenvolvimento de trincas em toras de eucaliptoinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://bioresources.cnr.ncsu.edu/resources/drying-influence-on-the-development-of-cracks-in-eucalyptus-logs/?msclkid=69471fbfaab111ecbe8e4aab6e772521Thiago Magalhães do NascimentoThiago Campos MonteiroEdy Eime Pereira BaraúnaJordão Cabral MoulinAlcinei Mistico Azevedoinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFMGinstname:Universidade Federal de Minas Gerais (UFMG)instacron:UFMGLICENSELicense.txtLicense.txttext/plain; charset=utf-82042https://repositorio.ufmg.br/bitstream/1843/40363/1/License.txtfa505098d172de0bc8864fc1287ffe22MD51ORIGINALDrying_Influence_Appear_Cracks_Eucalyptus_Logs.pdfDrying_Influence_Appear_Cracks_Eucalyptus_Logs.pdfapplication/pdf912652https://repositorio.ufmg.br/bitstream/1843/40363/2/Drying_Influence_Appear_Cracks_Eucalyptus_Logs.pdfda640b81146b93f784356fba2f055ca3MD521843/403632022-03-23 11:53:46.094oai:repositorio.ufmg.br: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Repositório de PublicaçõesPUBhttps://repositorio.ufmg.br/oaiopendoar:2022-03-23T14:53:46Repositório Institucional da UFMG - Universidade Federal de Minas Gerais (UFMG)false |
dc.title.pt_BR.fl_str_mv |
Drying influence on the development of cracks in eucalyptus logs |
dc.title.alternative.pt_BR.fl_str_mv |
Influência da secagem no desenvolvimento de trincas em toras de eucalipto |
title |
Drying influence on the development of cracks in eucalyptus logs |
spellingShingle |
Drying influence on the development of cracks in eucalyptus logs Thiago Magalhães do Nascimento bound water Roundwood Diameter Wood Defects end splits Free water surface cracks Madeira - Testes Madeira - Defeitos Toras de madeira |
title_short |
Drying influence on the development of cracks in eucalyptus logs |
title_full |
Drying influence on the development of cracks in eucalyptus logs |
title_fullStr |
Drying influence on the development of cracks in eucalyptus logs |
title_full_unstemmed |
Drying influence on the development of cracks in eucalyptus logs |
title_sort |
Drying influence on the development of cracks in eucalyptus logs |
author |
Thiago Magalhães do Nascimento |
author_facet |
Thiago Magalhães do Nascimento Thiago Campos Monteiro Edy Eime Pereira Baraúna Jordão Cabral Moulin Alcinei Mistico Azevedo |
author_role |
author |
author2 |
Thiago Campos Monteiro Edy Eime Pereira Baraúna Jordão Cabral Moulin Alcinei Mistico Azevedo |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Thiago Magalhães do Nascimento Thiago Campos Monteiro Edy Eime Pereira Baraúna Jordão Cabral Moulin Alcinei Mistico Azevedo |
dc.subject.por.fl_str_mv |
bound water Roundwood Diameter Wood Defects end splits Free water surface cracks |
topic |
bound water Roundwood Diameter Wood Defects end splits Free water surface cracks Madeira - Testes Madeira - Defeitos Toras de madeira |
dc.subject.other.pt_BR.fl_str_mv |
Madeira - Testes Madeira - Defeitos Toras de madeira |
description |
The aim of this study was to evaluate the effect of the moisture loss, diameter, and wood density on the appearance of surface cracks and end splits in Eucalyptus urophylla logs. The drying and emergence of defects were evaluated in 108 logs with diameters ranging from 60 mm to 150 mm from the initial moisture content to the equilibrium moisture content. The defects were measured during this time. Smaller diameter logs dried faster than larger diameter logs and took less time to reach the fiber saturation point. Surface cracks tended to develop during the loss of bound water. End splits developed during free water loss and continued to appear during bound water loss. Smaller diameters presented higher percentages of surface cracks compared with larger diameters, while larger diameters had a tendency for higher percentages of end splits compared with smaller diameters. The density did not influence the total emergence of end splits, but it did influence the total emergence of surface cracks, indicating a possibility for the selection of genetic material with lower tendency for cracking. Overall, the results reinforce the need to control drying at its beginning in order to decrease the risk of defects. |
publishDate |
2019 |
dc.date.issued.fl_str_mv |
2019 |
dc.date.accessioned.fl_str_mv |
2022-03-23T14:53:45Z |
dc.date.available.fl_str_mv |
2022-03-23T14:53:45Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1843/40363 |
dc.identifier.doi.pt_BR.fl_str_mv |
https://doi.org/10.15376/biores.14.1.220-233 |
dc.identifier.issn.pt_BR.fl_str_mv |
19302126 |
dc.identifier.orcid.pt_BR.fl_str_mv |
https://orcid.org/0000-0001-5576-492X https://orcid.org/ 0000-0001-5239-9592 https://orcid.org/0000-0001-5196-0851 |
url |
https://doi.org/10.15376/biores.14.1.220-233 http://hdl.handle.net/1843/40363 https://orcid.org/0000-0001-5576-492X https://orcid.org/ 0000-0001-5239-9592 https://orcid.org/0000-0001-5196-0851 |
identifier_str_mv |
19302126 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Bioresources |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais |
dc.publisher.initials.fl_str_mv |
UFMG |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS |
publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFMG instname:Universidade Federal de Minas Gerais (UFMG) instacron:UFMG |
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Universidade Federal de Minas Gerais (UFMG) |
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UFMG |
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UFMG |
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Repositório Institucional da UFMG |
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Repositório Institucional da UFMG |
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