INFLUENCE OF SLOPE OF GRAIN IN SHEAR STRENGTH OF WOOD

Detalhes bibliográficos
Autor(a) principal: Carrasco, Edgar Vladimiro Mantilla
Data de Publicação: 2016
Outros Autores: Mantilla, Judy Norka Rodo
Tipo de documento: Artigo
Idioma: por
Título da fonte: Ciência Florestal (Online)
Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/22754
Resumo: The shear stress as a function of the inclination of the wood fibers were determined through experimental tests. The test specimens were obtained from a sample of wood beams 12 Eucalyptus saligna, following the requirements of NBR 7190. They were made with variable slope fiber (0 º, 15 º, 30 º, 45 º, 60 º, 75 º, 90 º). Through statistical analysis it was possible to estimate the parameters of variability of shear stress with the slope of the wood fibers. The shear stresses were corrected to standard moisture of 12%. With robust statistical analysis of the data set, it was possible to define the empirical equations that best define this phenomenon. Equations proposed in the literature by Hankinson, Karlsen, DIN 1052 and Keylwerth, the formulation prescribed by DIN 1052, with necessary modifications, has a better fit to the experimental results.
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spelling INFLUENCE OF SLOPE OF GRAIN IN SHEAR STRENGTH OF WOODINFLUÊNCIA DA INCLINAÇÃO DAS FIBRAS DA MADEIRA NA SUA RESISTÊNCIA AO CISALHAMENTOfracture mechanicsslope of fiberseucalyptus.fratura mecânicainclinação às fibraseucalipto.The shear stress as a function of the inclination of the wood fibers were determined through experimental tests. The test specimens were obtained from a sample of wood beams 12 Eucalyptus saligna, following the requirements of NBR 7190. They were made with variable slope fiber (0 º, 15 º, 30 º, 45 º, 60 º, 75 º, 90 º). Through statistical analysis it was possible to estimate the parameters of variability of shear stress with the slope of the wood fibers. The shear stresses were corrected to standard moisture of 12%. With robust statistical analysis of the data set, it was possible to define the empirical equations that best define this phenomenon. Equations proposed in the literature by Hankinson, Karlsen, DIN 1052 and Keylwerth, the formulation prescribed by DIN 1052, with necessary modifications, has a better fit to the experimental results.As tensões de cisalhamento em função da inclinação das fibras da madeira foram determinadas por meio de ensaios experimentais. Os corpos de prova foram obtidos de 12 vigas de madeira Eucalyptus saligna, seguindo as prescrições da NBR 7190 (1979). Os mesmos foram confeccionados com inclinação variável das fibras (0o, 15º, 30º, 45º, 60º, 75º, 90º). Através de análise estatística foi possível estimar os parâmetros de variabilidade das tensões de cisalhamento em função da inclinação das fibras da madeira. Essas tensões foram corrigidas para a umidade padrão de 12%. Foi possível definir as equações empíricas que definem melhor este fenômeno, por meio de uma análise estatística robusta do conjunto de dados. Das equações propostas na literatura por Hankinson, Karlsen, DIN 1052 e Keylwerth, a formulação prescrita pela DIN 1052 (2007), com as devidas modificações, apresenta melhor adequação aos resultados experimentais.Universidade Federal de Santa Maria2016-06-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/2275410.5902/1980509822754Ciência Florestal; Vol. 26 No. 2 (2016); 535-543Ciência Florestal; v. 26 n. 2 (2016); 535-5431980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMporhttps://periodicos.ufsm.br/cienciaflorestal/article/view/22754/pdfCopyright (c) 2016 Ciência Florestalinfo:eu-repo/semantics/openAccessCarrasco, Edgar Vladimiro MantillaMantilla, Judy Norka Rodo2017-04-06T18:15:31Zoai:ojs.pkp.sfu.ca:article/22754Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2017-04-06T18:15:31Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false
dc.title.none.fl_str_mv INFLUENCE OF SLOPE OF GRAIN IN SHEAR STRENGTH OF WOOD
INFLUÊNCIA DA INCLINAÇÃO DAS FIBRAS DA MADEIRA NA SUA RESISTÊNCIA AO CISALHAMENTO
title INFLUENCE OF SLOPE OF GRAIN IN SHEAR STRENGTH OF WOOD
spellingShingle INFLUENCE OF SLOPE OF GRAIN IN SHEAR STRENGTH OF WOOD
Carrasco, Edgar Vladimiro Mantilla
fracture mechanics
slope of fibers
eucalyptus.
fratura mecânica
inclinação às fibras
eucalipto.
title_short INFLUENCE OF SLOPE OF GRAIN IN SHEAR STRENGTH OF WOOD
title_full INFLUENCE OF SLOPE OF GRAIN IN SHEAR STRENGTH OF WOOD
title_fullStr INFLUENCE OF SLOPE OF GRAIN IN SHEAR STRENGTH OF WOOD
title_full_unstemmed INFLUENCE OF SLOPE OF GRAIN IN SHEAR STRENGTH OF WOOD
title_sort INFLUENCE OF SLOPE OF GRAIN IN SHEAR STRENGTH OF WOOD
author Carrasco, Edgar Vladimiro Mantilla
author_facet Carrasco, Edgar Vladimiro Mantilla
Mantilla, Judy Norka Rodo
author_role author
author2 Mantilla, Judy Norka Rodo
author2_role author
dc.contributor.author.fl_str_mv Carrasco, Edgar Vladimiro Mantilla
Mantilla, Judy Norka Rodo
dc.subject.por.fl_str_mv fracture mechanics
slope of fibers
eucalyptus.
fratura mecânica
inclinação às fibras
eucalipto.
topic fracture mechanics
slope of fibers
eucalyptus.
fratura mecânica
inclinação às fibras
eucalipto.
description The shear stress as a function of the inclination of the wood fibers were determined through experimental tests. The test specimens were obtained from a sample of wood beams 12 Eucalyptus saligna, following the requirements of NBR 7190. They were made with variable slope fiber (0 º, 15 º, 30 º, 45 º, 60 º, 75 º, 90 º). Through statistical analysis it was possible to estimate the parameters of variability of shear stress with the slope of the wood fibers. The shear stresses were corrected to standard moisture of 12%. With robust statistical analysis of the data set, it was possible to define the empirical equations that best define this phenomenon. Equations proposed in the literature by Hankinson, Karlsen, DIN 1052 and Keylwerth, the formulation prescribed by DIN 1052, with necessary modifications, has a better fit to the experimental results.
publishDate 2016
dc.date.none.fl_str_mv 2016-06-20
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://periodicos.ufsm.br/cienciaflorestal/article/view/22754
10.5902/1980509822754
url https://periodicos.ufsm.br/cienciaflorestal/article/view/22754
identifier_str_mv 10.5902/1980509822754
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.ufsm.br/cienciaflorestal/article/view/22754/pdf
dc.rights.driver.fl_str_mv Copyright (c) 2016 Ciência Florestal
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2016 Ciência Florestal
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Santa Maria
publisher.none.fl_str_mv Universidade Federal de Santa Maria
dc.source.none.fl_str_mv Ciência Florestal; Vol. 26 No. 2 (2016); 535-543
Ciência Florestal; v. 26 n. 2 (2016); 535-543
1980-5098
0103-9954
reponame:Ciência Florestal (Online)
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Ciência Florestal (Online)
collection Ciência Florestal (Online)
repository.name.fl_str_mv Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)
repository.mail.fl_str_mv ||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br
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