Analytical study of the curve of static bending test for wood specimens

Detalhes bibliográficos
Autor(a) principal: Almeida,Tiago Hendrigo de
Data de Publicação: 2020
Outros Autores: Almeida,Diego Henrique de, Moritani,Fabiana Yukiko, Pereira,Marcos Cesar de Moraes, Christoforo,André Luis, Lahr,Francisco Antonio Rocco
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Ambiente construído (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-86212020000100325
Resumo: Abstract The NBR 7190:1997 "Design of Timber Structures" provides the procedure for several mechanical tests, and among them, the Static bending test for Modulus of Elasticity (Em) and Conventional Value of Strength (fm) determinations. It is common to characterize wood batches with a small number of specimens, what makes it difficult to perform an estimative test for rupture determination, and afterwards, to carry out the loading cycle for Em estimation. In these cases, instead of Force parameters, Deflection parameters are used for the loading cycle. This paper aims to identify a pattern between Force and Deflection parameters by investigating the Force vs. Deflection curve of the static bending test of wood specimens. According to results, there is a well pronounced pattern between Force and Deflection parameters in the linear part of the Force vs. Deflection curve, and based on this, we proposed a linear regression model between logarithm values of the force percentage (in relation to the rupture) and the denominator of the span value (as a Deflection parameter), resulting R2 equal to 97.41%. This result makes the conduction of the static bending test easier in specialized laboratories for testing of wood.
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spelling Analytical study of the curve of static bending test for wood specimensDeflectionForceRegression modelStatic bending testTesting of woodAbstract The NBR 7190:1997 "Design of Timber Structures" provides the procedure for several mechanical tests, and among them, the Static bending test for Modulus of Elasticity (Em) and Conventional Value of Strength (fm) determinations. It is common to characterize wood batches with a small number of specimens, what makes it difficult to perform an estimative test for rupture determination, and afterwards, to carry out the loading cycle for Em estimation. In these cases, instead of Force parameters, Deflection parameters are used for the loading cycle. This paper aims to identify a pattern between Force and Deflection parameters by investigating the Force vs. Deflection curve of the static bending test of wood specimens. According to results, there is a well pronounced pattern between Force and Deflection parameters in the linear part of the Force vs. Deflection curve, and based on this, we proposed a linear regression model between logarithm values of the force percentage (in relation to the rupture) and the denominator of the span value (as a Deflection parameter), resulting R2 equal to 97.41%. This result makes the conduction of the static bending test easier in specialized laboratories for testing of wood.Associação Nacional de Tecnologia do Ambiente Construído - ANTAC2020-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-86212020000100325Ambiente Construído v.20 n.1 2020reponame:Ambiente construído (Online)instname:Associação Nacional de Tecnologia do Ambiente Construído (ANTAC)instacron:ANTAC10.1590/s1678-86212020000100377info:eu-repo/semantics/openAccessAlmeida,Tiago Hendrigo deAlmeida,Diego Henrique deMoritani,Fabiana YukikoPereira,Marcos Cesar de MoraesChristoforo,André LuisLahr,Francisco Antonio Roccoeng2020-05-05T00:00:00Zoai:scielo:S1678-86212020000100325Revistahttps://seer.ufrgs.br/ambienteconstruidohttps://old.scielo.br/oai/scielo-oai.php||ambienteconstruido@ufrgs.br1678-86211415-8876opendoar:2020-05-05T00:00Ambiente construído (Online) - Associação Nacional de Tecnologia do Ambiente Construído (ANTAC)false
dc.title.none.fl_str_mv Analytical study of the curve of static bending test for wood specimens
title Analytical study of the curve of static bending test for wood specimens
spellingShingle Analytical study of the curve of static bending test for wood specimens
Almeida,Tiago Hendrigo de
Deflection
Force
Regression model
Static bending test
Testing of wood
title_short Analytical study of the curve of static bending test for wood specimens
title_full Analytical study of the curve of static bending test for wood specimens
title_fullStr Analytical study of the curve of static bending test for wood specimens
title_full_unstemmed Analytical study of the curve of static bending test for wood specimens
title_sort Analytical study of the curve of static bending test for wood specimens
author Almeida,Tiago Hendrigo de
author_facet Almeida,Tiago Hendrigo de
Almeida,Diego Henrique de
Moritani,Fabiana Yukiko
Pereira,Marcos Cesar de Moraes
Christoforo,André Luis
Lahr,Francisco Antonio Rocco
author_role author
author2 Almeida,Diego Henrique de
Moritani,Fabiana Yukiko
Pereira,Marcos Cesar de Moraes
Christoforo,André Luis
Lahr,Francisco Antonio Rocco
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Almeida,Tiago Hendrigo de
Almeida,Diego Henrique de
Moritani,Fabiana Yukiko
Pereira,Marcos Cesar de Moraes
Christoforo,André Luis
Lahr,Francisco Antonio Rocco
dc.subject.por.fl_str_mv Deflection
Force
Regression model
Static bending test
Testing of wood
topic Deflection
Force
Regression model
Static bending test
Testing of wood
description Abstract The NBR 7190:1997 "Design of Timber Structures" provides the procedure for several mechanical tests, and among them, the Static bending test for Modulus of Elasticity (Em) and Conventional Value of Strength (fm) determinations. It is common to characterize wood batches with a small number of specimens, what makes it difficult to perform an estimative test for rupture determination, and afterwards, to carry out the loading cycle for Em estimation. In these cases, instead of Force parameters, Deflection parameters are used for the loading cycle. This paper aims to identify a pattern between Force and Deflection parameters by investigating the Force vs. Deflection curve of the static bending test of wood specimens. According to results, there is a well pronounced pattern between Force and Deflection parameters in the linear part of the Force vs. Deflection curve, and based on this, we proposed a linear regression model between logarithm values of the force percentage (in relation to the rupture) and the denominator of the span value (as a Deflection parameter), resulting R2 equal to 97.41%. This result makes the conduction of the static bending test easier in specialized laboratories for testing of wood.
publishDate 2020
dc.date.none.fl_str_mv 2020-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-86212020000100325
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-86212020000100325
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1678-86212020000100377
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Nacional de Tecnologia do Ambiente Construído - ANTAC
publisher.none.fl_str_mv Associação Nacional de Tecnologia do Ambiente Construído - ANTAC
dc.source.none.fl_str_mv Ambiente Construído v.20 n.1 2020
reponame:Ambiente construído (Online)
instname:Associação Nacional de Tecnologia do Ambiente Construído (ANTAC)
instacron:ANTAC
instname_str Associação Nacional de Tecnologia do Ambiente Construído (ANTAC)
instacron_str ANTAC
institution ANTAC
reponame_str Ambiente construído (Online)
collection Ambiente construído (Online)
repository.name.fl_str_mv Ambiente construído (Online) - Associação Nacional de Tecnologia do Ambiente Construído (ANTAC)
repository.mail.fl_str_mv ||ambienteconstruido@ufrgs.br
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