Propriedades físico-mecânicas de chapas aglomeradas produzidas com bambu, pinus e eucalipto.
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Manancial - Repositório Digital da UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/8682 |
Resumo: | This study investigated the physical and mechanical properties of particleboards formed of bamboo (Bambusa tuldoides), pine (Pinus taeda) and eucalyptus (Eucalyptus grandis) and their combinations. To this end, panels were made, defined by the use of each type of particle pure or mixed by two or three being set 0, 25, 50, 75 and 100% of dry weight proportion, totalling 36 panels. The physical tests performed were the moisture content, density, water absorption and thickness swelling and the mechanical were static bending, screw withdrawal and internal bond. In order to complement the study, non-destructive testing were performed by direct and indirect ultrasonic to obtain models relating destructive and nondestructive methods. The results were analysed by for simple correlation and regression. In general, homogeneous panels made of pine and eucalypt showed better results than pure bamboo. The inclusion of bamboo particles decreased, mainly, the mechanical properties of the panels. All particleboard were below the minimum standards in physical and mechanical tests, only internal bond in panels pure pinehad higher values than commercial standards. Treatments using a combination of all species were compared, graphically, and resulted in lower than homogeneous panels of bamboo, for water absorption after two and twenty four hours and swelling after two hours. However, showed superior performance in swelling in thickness after twenty four hours, modulus of rupture and modulus of elasticity in static bending, screw withdrawal and internal bond. The non-destructive direct method showed better correlations than the indirect one. The significant correlations of the direct dynamic modulus of elasticity, in order of significance, occurred with board density, screw withdrawal, and static modulus of rupture and modulus of elasticity. |
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Propriedades físico-mecânicas de chapas aglomeradas produzidas com bambu, pinus e eucalipto.Physical and mechanical properties of particleboard produced with bamboo, pine and eucalypt.Bambusa tuldoidesPinus taedaEucalyptus grandisUreia-formaldeídoUltra-somBambusa tuldoidesPinus taedaEucalyptus grandisUreaformaldehydeUltrasoundCNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTALThis study investigated the physical and mechanical properties of particleboards formed of bamboo (Bambusa tuldoides), pine (Pinus taeda) and eucalyptus (Eucalyptus grandis) and their combinations. To this end, panels were made, defined by the use of each type of particle pure or mixed by two or three being set 0, 25, 50, 75 and 100% of dry weight proportion, totalling 36 panels. The physical tests performed were the moisture content, density, water absorption and thickness swelling and the mechanical were static bending, screw withdrawal and internal bond. In order to complement the study, non-destructive testing were performed by direct and indirect ultrasonic to obtain models relating destructive and nondestructive methods. The results were analysed by for simple correlation and regression. In general, homogeneous panels made of pine and eucalypt showed better results than pure bamboo. The inclusion of bamboo particles decreased, mainly, the mechanical properties of the panels. All particleboard were below the minimum standards in physical and mechanical tests, only internal bond in panels pure pinehad higher values than commercial standards. Treatments using a combination of all species were compared, graphically, and resulted in lower than homogeneous panels of bamboo, for water absorption after two and twenty four hours and swelling after two hours. However, showed superior performance in swelling in thickness after twenty four hours, modulus of rupture and modulus of elasticity in static bending, screw withdrawal and internal bond. The non-destructive direct method showed better correlations than the indirect one. The significant correlations of the direct dynamic modulus of elasticity, in order of significance, occurred with board density, screw withdrawal, and static modulus of rupture and modulus of elasticity.Este estudo investigou as propriedades físicas e mecânicas dos painéis aglomerados constituídos de bambu (Bambusa tuldoides), pinus (Pinus taeda) e eucalipto (Eucalyptus grandis) e as combinações entre eles. Para tanto, foram confeccionados painéis, definidos pelo uso de cada espécie de partícula pura ou misturada a duas ou três sendo estabelecidos 0, 25, 50, 75 e 100% de proporção em relação a massa seca, totalizando 36 painéis. Os ensaios físicos realizados foram o teor de umidade, massa específica, absorção d água e o inchamento em espessura e os mecânicos foram a flexão estática, arrancamento de parafusos e ligação interna. Para complementar o estudo, foi realizado ensaio não destrutivo pelos métodos direto e indireto para se obter modelos entre os ensaios destrutivos e o não destrutivo. Os resultados obtidos foram submetidos ao teste de correlação simples e analisados por regressão. De modo geral, os painéis homogêneos de pinus e eucalipto apresentaram melhores resultados que dos painéis formados apenas por bambu. A inclusão de bambu prejudicou, principalmente, as propriedades mecânicas das chapas. Todos os painéis ficaram abaixo dos valores mínimos das normas para os ensaios físicos e mecânicos, apenas no ensaio de tração os painéis homogêneos de pinus obtiveram valores superiores aos padrões de comercialização. Os tratamentos utilizando a combinação de todas as espécies foram comparados, graficamente, e resultaram em painéis inferiores aos homogêneos de bambu, para a absorção d água após duas e vinte quatro horas e inchamento após duas horas. Porém, apresentaram desempenhos superiores no inchamento após vinte quatro horas, módulos de ruptura e elasticidade estáticos, arrancamento de parafusos e ligação interna. Para os ensaios não destrutivos o método de propagação direto apresentou melhores correlações quando comparado ao indireto. As correlações significativas do módulo de elasticidade dinâmico direto, em ordem de significância, ocorreram com a massa específica observada, o arrancamento de parafusos, módulo de ruptura e módulo de elasticidade estático.Universidade Federal de Santa MariaBRRecursos Florestais e Engenharia FlorestalUFSMPrograma de Pós-Graduação em Engenharia FlorestalHaselein, Clovis Robertohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4781437J2Gatto, Darci Albertohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4777721A7Hillig, évertonhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4706962Z4Morais, Weslley Wilker Corrêa2011-11-072011-11-072011-07-18info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfapplication/pdfMORAIS, Weslley Wilker Corrêa. PHYSICAL AND MECHANICAL PROPERTIES OF PARTICLEBOARD PRODUCED WITH BAMBOO, PINE AND EUCALYPT.. 2011. 134 f. Dissertação (Mestrado em Recursos Florestais e Engenharia Florestal) - Universidade Federal de Santa Maria, Santa Maria, 2011.http://repositorio.ufsm.br/handle/1/8682porinfo:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM2022-03-04T18:34:21Zoai:repositorio.ufsm.br:1/8682Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2022-03-04T18:34:21Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
Propriedades físico-mecânicas de chapas aglomeradas produzidas com bambu, pinus e eucalipto. Physical and mechanical properties of particleboard produced with bamboo, pine and eucalypt. |
title |
Propriedades físico-mecânicas de chapas aglomeradas produzidas com bambu, pinus e eucalipto. |
spellingShingle |
Propriedades físico-mecânicas de chapas aglomeradas produzidas com bambu, pinus e eucalipto. Morais, Weslley Wilker Corrêa Bambusa tuldoides Pinus taeda Eucalyptus grandis Ureia-formaldeído Ultra-som Bambusa tuldoides Pinus taeda Eucalyptus grandis Ureaformaldehyde Ultrasound CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
title_short |
Propriedades físico-mecânicas de chapas aglomeradas produzidas com bambu, pinus e eucalipto. |
title_full |
Propriedades físico-mecânicas de chapas aglomeradas produzidas com bambu, pinus e eucalipto. |
title_fullStr |
Propriedades físico-mecânicas de chapas aglomeradas produzidas com bambu, pinus e eucalipto. |
title_full_unstemmed |
Propriedades físico-mecânicas de chapas aglomeradas produzidas com bambu, pinus e eucalipto. |
title_sort |
Propriedades físico-mecânicas de chapas aglomeradas produzidas com bambu, pinus e eucalipto. |
author |
Morais, Weslley Wilker Corrêa |
author_facet |
Morais, Weslley Wilker Corrêa |
author_role |
author |
dc.contributor.none.fl_str_mv |
Haselein, Clovis Roberto http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4781437J2 Gatto, Darci Alberto http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4777721A7 Hillig, éverton http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4706962Z4 |
dc.contributor.author.fl_str_mv |
Morais, Weslley Wilker Corrêa |
dc.subject.por.fl_str_mv |
Bambusa tuldoides Pinus taeda Eucalyptus grandis Ureia-formaldeído Ultra-som Bambusa tuldoides Pinus taeda Eucalyptus grandis Ureaformaldehyde Ultrasound CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
topic |
Bambusa tuldoides Pinus taeda Eucalyptus grandis Ureia-formaldeído Ultra-som Bambusa tuldoides Pinus taeda Eucalyptus grandis Ureaformaldehyde Ultrasound CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
description |
This study investigated the physical and mechanical properties of particleboards formed of bamboo (Bambusa tuldoides), pine (Pinus taeda) and eucalyptus (Eucalyptus grandis) and their combinations. To this end, panels were made, defined by the use of each type of particle pure or mixed by two or three being set 0, 25, 50, 75 and 100% of dry weight proportion, totalling 36 panels. The physical tests performed were the moisture content, density, water absorption and thickness swelling and the mechanical were static bending, screw withdrawal and internal bond. In order to complement the study, non-destructive testing were performed by direct and indirect ultrasonic to obtain models relating destructive and nondestructive methods. The results were analysed by for simple correlation and regression. In general, homogeneous panels made of pine and eucalypt showed better results than pure bamboo. The inclusion of bamboo particles decreased, mainly, the mechanical properties of the panels. All particleboard were below the minimum standards in physical and mechanical tests, only internal bond in panels pure pinehad higher values than commercial standards. Treatments using a combination of all species were compared, graphically, and resulted in lower than homogeneous panels of bamboo, for water absorption after two and twenty four hours and swelling after two hours. However, showed superior performance in swelling in thickness after twenty four hours, modulus of rupture and modulus of elasticity in static bending, screw withdrawal and internal bond. The non-destructive direct method showed better correlations than the indirect one. The significant correlations of the direct dynamic modulus of elasticity, in order of significance, occurred with board density, screw withdrawal, and static modulus of rupture and modulus of elasticity. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-11-07 2011-11-07 2011-07-18 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
MORAIS, Weslley Wilker Corrêa. PHYSICAL AND MECHANICAL PROPERTIES OF PARTICLEBOARD PRODUCED WITH BAMBOO, PINE AND EUCALYPT.. 2011. 134 f. Dissertação (Mestrado em Recursos Florestais e Engenharia Florestal) - Universidade Federal de Santa Maria, Santa Maria, 2011. http://repositorio.ufsm.br/handle/1/8682 |
identifier_str_mv |
MORAIS, Weslley Wilker Corrêa. PHYSICAL AND MECHANICAL PROPERTIES OF PARTICLEBOARD PRODUCED WITH BAMBOO, PINE AND EUCALYPT.. 2011. 134 f. Dissertação (Mestrado em Recursos Florestais e Engenharia Florestal) - Universidade Federal de Santa Maria, Santa Maria, 2011. |
url |
http://repositorio.ufsm.br/handle/1/8682 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria BR Recursos Florestais e Engenharia Florestal UFSM Programa de Pós-Graduação em Engenharia Florestal |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria BR Recursos Florestais e Engenharia Florestal UFSM Programa de Pós-Graduação em Engenharia Florestal |
dc.source.none.fl_str_mv |
reponame:Manancial - Repositório Digital da UFSM instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Manancial - Repositório Digital da UFSM |
collection |
Manancial - Repositório Digital da UFSM |
repository.name.fl_str_mv |
Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
atendimento.sib@ufsm.br||tedebc@gmail.com |
_version_ |
1805922126521171968 |