Estimation of the dynamic elastic properties of wood from Copaifera langsdorffii Desf using resonance analysis

Detalhes bibliográficos
Autor(a) principal: Leite, Edson Rubens da Silva
Data de Publicação: 2016
Outros Autores: Hein, Paulo Ricardo Gherardi, Souza, Tomé Moreira de, Rabelo, Giovanni Francisco
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/14145
Resumo: Analysis of transverse vibrations has been identifi ed as a simple, inexpensive, fast and effective method of characterizing the elastic properties of several materials, including wood. The objective of this study is to evaluate the dynamic elastic properties of wood from Copaifera langsdorffi i through resonance analysis. A linear correlation was observed, with a coeffi cient of determination of 0.88, between the dynamic modulus of elasticity (Ed), as determined by BING (resonance analysis), and the static modulus of elasticity (E), as determined by a universal testing machine, for wood samples of Copaifera langsdorffi i. A moderate correlation was observed (0.69) between the Ed and the apparent density (D) of the samples. The shear modulus (G) was negatively correlated with D, E, and Ed, yet not signifi cantly. The specifi c modulus, which is the stiffness to density ratio, was linearly correlated with the internal damping. This viscoelastic correlation is rarely reported in literature and indicates, for instance, wood quality for the manufacture of musical instruments. The BING system provided fast, reliable results for estimation of elastic  properties, particularly stiffness, in wood of Copaifera langsdorffii.
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spelling Estimation of the dynamic elastic properties of wood from Copaifera langsdorffii Desf using resonance analysisEstimativa das propriedades elastico-dinâmicas da madeira de Copaifera langsdorffii Desf por análise de ressonânciaAcousticTransverse vibrationElasticityShearStiffnessAcústicaVibração transversalElasticidadeCisalhamentoRigidezAnalysis of transverse vibrations has been identifi ed as a simple, inexpensive, fast and effective method of characterizing the elastic properties of several materials, including wood. The objective of this study is to evaluate the dynamic elastic properties of wood from Copaifera langsdorffi i through resonance analysis. A linear correlation was observed, with a coeffi cient of determination of 0.88, between the dynamic modulus of elasticity (Ed), as determined by BING (resonance analysis), and the static modulus of elasticity (E), as determined by a universal testing machine, for wood samples of Copaifera langsdorffi i. A moderate correlation was observed (0.69) between the Ed and the apparent density (D) of the samples. The shear modulus (G) was negatively correlated with D, E, and Ed, yet not signifi cantly. The specifi c modulus, which is the stiffness to density ratio, was linearly correlated with the internal damping. This viscoelastic correlation is rarely reported in literature and indicates, for instance, wood quality for the manufacture of musical instruments. The BING system provided fast, reliable results for estimation of elastic  properties, particularly stiffness, in wood of Copaifera langsdorffii.A análise de vibrações transversais tem sido apontada como um método de baixo custo, simples, rápido e eficiente para caracterizar as propriedades elásticas de diversos materiais, incluindo a madeira. Neste trabalho, objetivou-se avaliar as propriedades elásticas dinâmicas da madeira de Copaifera langsdorffi i por meio da análise de ressonância. Verificou-se uma correlação linear que apresentou coeficiente de determinação de 0,88 entre o módulo de elasticidade dinâmico (Ed), determinado pelo BING (análise de ressonância) e o módulo de elasticidade estático (E), determinado por meio de uma máquina universal de ensaios para as amostras de lenho de Copaifera langsdorffii. Houve também correlação moderada (0,69) entre o Ed e a densidade aparente (D) das amostras. O módulo de cisalhamento (G) apresentou correlação negativa com a D, E e Ed, porém de baixa magnitude. O módulo específico, que é a relação entre a rigidez e a densidade da madeira, se correlacionou linearmente com o amortecimento interno. Essa relação viscoelástica é raramente relatada na literatura e indica, por exemplo, a qualidade da madeira para manufatura de instrumentos musicais. O sistema BING apresentou resultados confiáveis e rápidos para a estimativa das propriedades elásticas, notadamente a rigidez, em madeira de Copaifera langsdorffii.Universidade Federal de Lavras (UFLA)2016-04-042017-08-01T20:13:43Z2017-08-01T20:13:43Z2017-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfLEITE, E. R. da S. et al. Estimation of the dynamic elastic properties of wood from Copaifera langsdorffii Desf using resonance analysis. CERNE, Lavras, v. 18, n. 1, p. 41-47, jan./mar. 2012.http://repositorio.ufla.br/jspui/handle/1/141452317-63420104-7760reponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAenghttp://www.cerne.ufla.br/site/index.php/CERNE/article/view/797/579Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessLeite, Edson Rubens da SilvaHein, Paulo Ricardo GherardiSouza, Tomé Moreira deRabelo, Giovanni Francisco2023-05-02T18:53:51Zoai:localhost:1/14145Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-05-02T18:53:51Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Estimation of the dynamic elastic properties of wood from Copaifera langsdorffii Desf using resonance analysis
Estimativa das propriedades elastico-dinâmicas da madeira de Copaifera langsdorffii Desf por análise de ressonância
title Estimation of the dynamic elastic properties of wood from Copaifera langsdorffii Desf using resonance analysis
spellingShingle Estimation of the dynamic elastic properties of wood from Copaifera langsdorffii Desf using resonance analysis
Leite, Edson Rubens da Silva
Acoustic
Transverse vibration
Elasticity
Shear
Stiffness
Acústica
Vibração transversal
Elasticidade
Cisalhamento
Rigidez
title_short Estimation of the dynamic elastic properties of wood from Copaifera langsdorffii Desf using resonance analysis
title_full Estimation of the dynamic elastic properties of wood from Copaifera langsdorffii Desf using resonance analysis
title_fullStr Estimation of the dynamic elastic properties of wood from Copaifera langsdorffii Desf using resonance analysis
title_full_unstemmed Estimation of the dynamic elastic properties of wood from Copaifera langsdorffii Desf using resonance analysis
title_sort Estimation of the dynamic elastic properties of wood from Copaifera langsdorffii Desf using resonance analysis
author Leite, Edson Rubens da Silva
author_facet Leite, Edson Rubens da Silva
Hein, Paulo Ricardo Gherardi
Souza, Tomé Moreira de
Rabelo, Giovanni Francisco
author_role author
author2 Hein, Paulo Ricardo Gherardi
Souza, Tomé Moreira de
Rabelo, Giovanni Francisco
author2_role author
author
author
dc.contributor.author.fl_str_mv Leite, Edson Rubens da Silva
Hein, Paulo Ricardo Gherardi
Souza, Tomé Moreira de
Rabelo, Giovanni Francisco
dc.subject.por.fl_str_mv Acoustic
Transverse vibration
Elasticity
Shear
Stiffness
Acústica
Vibração transversal
Elasticidade
Cisalhamento
Rigidez
topic Acoustic
Transverse vibration
Elasticity
Shear
Stiffness
Acústica
Vibração transversal
Elasticidade
Cisalhamento
Rigidez
description Analysis of transverse vibrations has been identifi ed as a simple, inexpensive, fast and effective method of characterizing the elastic properties of several materials, including wood. The objective of this study is to evaluate the dynamic elastic properties of wood from Copaifera langsdorffi i through resonance analysis. A linear correlation was observed, with a coeffi cient of determination of 0.88, between the dynamic modulus of elasticity (Ed), as determined by BING (resonance analysis), and the static modulus of elasticity (E), as determined by a universal testing machine, for wood samples of Copaifera langsdorffi i. A moderate correlation was observed (0.69) between the Ed and the apparent density (D) of the samples. The shear modulus (G) was negatively correlated with D, E, and Ed, yet not signifi cantly. The specifi c modulus, which is the stiffness to density ratio, was linearly correlated with the internal damping. This viscoelastic correlation is rarely reported in literature and indicates, for instance, wood quality for the manufacture of musical instruments. The BING system provided fast, reliable results for estimation of elastic  properties, particularly stiffness, in wood of Copaifera langsdorffii.
publishDate 2016
dc.date.none.fl_str_mv 2016-04-04
2017-08-01T20:13:43Z
2017-08-01T20:13:43Z
2017-08-01
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 LEITE, E. R. da S. et al. Estimation of the dynamic elastic properties of wood from Copaifera langsdorffii Desf using resonance analysis. CERNE, Lavras, v. 18, n. 1, p. 41-47, jan./mar. 2012.
http://repositorio.ufla.br/jspui/handle/1/14145
identifier_str_mv LEITE, E. R. da S. et al. Estimation of the dynamic elastic properties of wood from Copaifera langsdorffii Desf using resonance analysis. CERNE, Lavras, v. 18, n. 1, p. 41-47, jan./mar. 2012.
url http://repositorio.ufla.br/jspui/handle/1/14145
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://www.cerne.ufla.br/site/index.php/CERNE/article/view/797/579
dc.rights.driver.fl_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Lavras (UFLA)
publisher.none.fl_str_mv Universidade Federal de Lavras (UFLA)
dc.source.none.fl_str_mv 2317-6342
0104-7760
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
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