Analytical study of the curve of static bending test for wood specimens
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
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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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 |
_version_ |
1754209104433250304 |