VARIATION OF ELASTICITY AND RUPTURE MODULES IN AUSTRALIAN CEDAR WOOD BY NONDESTRUCTIVE AND DESTRUCTIVE TESTS

Detalhes bibliográficos
Autor(a) principal: Segundinho, Pedro Gutemberg de Alcântara
Data de Publicação: 2018
Outros Autores: Regazzi, Adair José, Poletti, Franco Simões, Paula, Marcos Oliveira de, Mendonça, Adriano Ribeiro de, Gonçalves, Fabricio Gomes
Tipo de documento: Artigo
Idioma: por
Título da fonte: Ciência Florestal (Online)
Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/33392
Resumo: The elastic of modulus is an important mechanical property in the design of timber structures, so obtaining it through several methods needs to be evaluated. This study aimed to evaluate the use of an efficient technique for determining the apparent longitudinal modulus taking into account the relationship range/height (L/h) and the influence of the shear modulus by comparing non-destructive tests with static bending tests. The wood used in paper was Toona ciliata M. Roemer (Australian cedar). Non-destructive tests were performed with the techniques of longitudinal and transverse vibration. It was concluded that the assay of longitudinal vibration is most suitable method to obtain the apparent longitudinal elasticity modulus, because the shear forces that occur due to the shear stresses are not significantly influenced by the variations of the ratio L/h. It was also possible to conclude that the relationship range/height, currently 21 in ABNT’s standards, may be replaced by 20, when determining apparent longitudinal elasticity modules and modulus of rupture, through the static bending and free transverse vibration tests.
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spelling VARIATION OF ELASTICITY AND RUPTURE MODULES IN AUSTRALIAN CEDAR WOOD BY NONDESTRUCTIVE AND DESTRUCTIVE TESTSVARIAÇÃO DOS MÓDULOS DE ELASTICIDADE E RUPTURA EM MADEIRA DE CEDRO-AUSTRALIANO POR MEIO DE ENSAIOS NÃO DESTRUTIVO E DESTRUTIVOlongitudinal vibrationtransverse vibrationbending test.vibração longitudinalvibração transversal livreflexão estática.The elastic of modulus is an important mechanical property in the design of timber structures, so obtaining it through several methods needs to be evaluated. This study aimed to evaluate the use of an efficient technique for determining the apparent longitudinal modulus taking into account the relationship range/height (L/h) and the influence of the shear modulus by comparing non-destructive tests with static bending tests. The wood used in paper was Toona ciliata M. Roemer (Australian cedar). Non-destructive tests were performed with the techniques of longitudinal and transverse vibration. It was concluded that the assay of longitudinal vibration is most suitable method to obtain the apparent longitudinal elasticity modulus, because the shear forces that occur due to the shear stresses are not significantly influenced by the variations of the ratio L/h. It was also possible to conclude that the relationship range/height, currently 21 in ABNT’s standards, may be replaced by 20, when determining apparent longitudinal elasticity modules and modulus of rupture, through the static bending and free transverse vibration tests.O módulo de elasticidade é uma propriedade mecânica importante no dimensionamento de projetos de estruturas de madeira, logo, a obtenção por meio de diversos métodos necessita ser analisada. Diante disso, este trabalho teve como objetivo avaliar a utilização de técnicas não destrutiva e destrutiva para determinar o módulo de elasticidade longitudinal aparente, levando em conta a relação vão/altura (L/h), e verificar a influência do cisalhamento no módulo de elasticidade, por meio da comparação de ensaios não destrutivos com ensaios de flexão estática. A madeira utilizada no trabalho foi de Toona ciliata M. Roemer (cedro-australiano). Os ensaios não destrutivos foram realizados por meio das técnicas de vibração transversal livre e longitudinal. Concluiu-se que o ensaio de vibração longitudinal é o método mais adequado para obtenção do módulo de elasticidade longitudinal aparente (MOEa,l), pois os esforços cortantes que ocorrem devido às tensões de cisalhamento não influenciaram significativamente na obtenção do (MOEa,l), considerando a variação da relação L/h. Também foi possível concluir que, a relação L/h, atualmente igual a 21 na ABNT NBR 7190 (1997), pode ser reduzida para 20, quando da determinação dos módulos de elasticidade longitudinal aparente e módulo de ruptura por meio do ensaio de flexão estática e vibração transversal livre.Universidade Federal de Santa Maria2018-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/3339210.5902/1980509833392Ciência Florestal; Vol. 28 No. 3 (2018); 1163-1178Ciência Florestal; v. 28 n. 3 (2018); 1163-11781980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMporhttps://periodicos.ufsm.br/cienciaflorestal/article/view/33392/pdfCopyright (c) 2018 Ciência Florestalinfo:eu-repo/semantics/openAccessSegundinho, Pedro Gutemberg de AlcântaraRegazzi, Adair JoséPoletti, Franco SimõesPaula, Marcos Oliveira deMendonça, Adriano Ribeiro deGonçalves, Fabricio Gomes2018-10-08T13:27:45Zoai:ojs.pkp.sfu.ca:article/33392Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2018-10-08T13:27:45Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false
dc.title.none.fl_str_mv VARIATION OF ELASTICITY AND RUPTURE MODULES IN AUSTRALIAN CEDAR WOOD BY NONDESTRUCTIVE AND DESTRUCTIVE TESTS
VARIAÇÃO DOS MÓDULOS DE ELASTICIDADE E RUPTURA EM MADEIRA DE CEDRO-AUSTRALIANO POR MEIO DE ENSAIOS NÃO DESTRUTIVO E DESTRUTIVO
title VARIATION OF ELASTICITY AND RUPTURE MODULES IN AUSTRALIAN CEDAR WOOD BY NONDESTRUCTIVE AND DESTRUCTIVE TESTS
spellingShingle VARIATION OF ELASTICITY AND RUPTURE MODULES IN AUSTRALIAN CEDAR WOOD BY NONDESTRUCTIVE AND DESTRUCTIVE TESTS
Segundinho, Pedro Gutemberg de Alcântara
longitudinal vibration
transverse vibration
bending test.
vibração longitudinal
vibração transversal livre
flexão estática.
title_short VARIATION OF ELASTICITY AND RUPTURE MODULES IN AUSTRALIAN CEDAR WOOD BY NONDESTRUCTIVE AND DESTRUCTIVE TESTS
title_full VARIATION OF ELASTICITY AND RUPTURE MODULES IN AUSTRALIAN CEDAR WOOD BY NONDESTRUCTIVE AND DESTRUCTIVE TESTS
title_fullStr VARIATION OF ELASTICITY AND RUPTURE MODULES IN AUSTRALIAN CEDAR WOOD BY NONDESTRUCTIVE AND DESTRUCTIVE TESTS
title_full_unstemmed VARIATION OF ELASTICITY AND RUPTURE MODULES IN AUSTRALIAN CEDAR WOOD BY NONDESTRUCTIVE AND DESTRUCTIVE TESTS
title_sort VARIATION OF ELASTICITY AND RUPTURE MODULES IN AUSTRALIAN CEDAR WOOD BY NONDESTRUCTIVE AND DESTRUCTIVE TESTS
author Segundinho, Pedro Gutemberg de Alcântara
author_facet Segundinho, Pedro Gutemberg de Alcântara
Regazzi, Adair José
Poletti, Franco Simões
Paula, Marcos Oliveira de
Mendonça, Adriano Ribeiro de
Gonçalves, Fabricio Gomes
author_role author
author2 Regazzi, Adair José
Poletti, Franco Simões
Paula, Marcos Oliveira de
Mendonça, Adriano Ribeiro de
Gonçalves, Fabricio Gomes
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Segundinho, Pedro Gutemberg de Alcântara
Regazzi, Adair José
Poletti, Franco Simões
Paula, Marcos Oliveira de
Mendonça, Adriano Ribeiro de
Gonçalves, Fabricio Gomes
dc.subject.por.fl_str_mv longitudinal vibration
transverse vibration
bending test.
vibração longitudinal
vibração transversal livre
flexão estática.
topic longitudinal vibration
transverse vibration
bending test.
vibração longitudinal
vibração transversal livre
flexão estática.
description The elastic of modulus is an important mechanical property in the design of timber structures, so obtaining it through several methods needs to be evaluated. This study aimed to evaluate the use of an efficient technique for determining the apparent longitudinal modulus taking into account the relationship range/height (L/h) and the influence of the shear modulus by comparing non-destructive tests with static bending tests. The wood used in paper was Toona ciliata M. Roemer (Australian cedar). Non-destructive tests were performed with the techniques of longitudinal and transverse vibration. It was concluded that the assay of longitudinal vibration is most suitable method to obtain the apparent longitudinal elasticity modulus, because the shear forces that occur due to the shear stresses are not significantly influenced by the variations of the ratio L/h. It was also possible to conclude that the relationship range/height, currently 21 in ABNT’s standards, may be replaced by 20, when determining apparent longitudinal elasticity modules and modulus of rupture, through the static bending and free transverse vibration tests.
publishDate 2018
dc.date.none.fl_str_mv 2018-10-01
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/33392
10.5902/1980509833392
url https://periodicos.ufsm.br/cienciaflorestal/article/view/33392
identifier_str_mv 10.5902/1980509833392
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.ufsm.br/cienciaflorestal/article/view/33392/pdf
dc.rights.driver.fl_str_mv Copyright (c) 2018 Ciência Florestal
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2018 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. 28 No. 3 (2018); 1163-1178
Ciência Florestal; v. 28 n. 3 (2018); 1163-1178
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
_version_ 1799944133931958272

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