Physical and mechanical properties of Chrysophyllum marginatum wood
Autor(a) principal: | |
---|---|
Data de Publicação: | 2023 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Florestal Brasileira (Online) |
Texto Completo: | https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/884 |
Resumo: | This study aimed to evaluate the physical and mechanical properties of the wood of Chrysophyllum marginatum (Hook. And Arn.) Radlk. We used three trees with 20.3 ± 6 cm of diameter. It was determined by regression analysis the variation bottom-up of shrinkage, anisotropic coefficient, saturate moisture content and basic density. To characterize the static bending in the first log, in saturate and air dried conditions, it was performed variance analysis using Tukey›s test. It was observed a decrease in radial and tangential contractions and basic density on bottom-up direction. Saturate moisture content increased, considering the same direction. Anisotropic coefficient presented increase tendency up to 1.30 m height followed by stabilization from that position to the top. It was observed decreasing tendency of longitudinal contraction to approximately 40% of total height, followed by increasing up to the insertion of the first living branch. Mean anisotropic coefficient and basic density were 2.3kg m-³ and 594 kg m-³, respectively. Air dry condition showed greater static bending resistance than when saturate. Values of rupture and elasticity modulus were similar to those found in studies with Eucalyptus saligna and Carya illinoinensis. |
id |
EMBRAPA-5_119b8ddd4a9229195f06c95995658a7b |
---|---|
oai_identifier_str |
oai:pfb.cnpf.embrapa.br/pfb:article/884 |
network_acronym_str |
EMBRAPA-5 |
network_name_str |
Pesquisa Florestal Brasileira (Online) |
repository_id_str |
|
spelling |
Physical and mechanical properties of Chrysophyllum marginatum woodPropriedades físico-mecânicas da madeira de Chrysophyllum marginatumShrinkageAnisotropic coefficientStatic bendingRetratibilidadeCoeficiente anisotrópicoFlexão estáticaThis study aimed to evaluate the physical and mechanical properties of the wood of Chrysophyllum marginatum (Hook. And Arn.) Radlk. We used three trees with 20.3 ± 6 cm of diameter. It was determined by regression analysis the variation bottom-up of shrinkage, anisotropic coefficient, saturate moisture content and basic density. To characterize the static bending in the first log, in saturate and air dried conditions, it was performed variance analysis using Tukey›s test. It was observed a decrease in radial and tangential contractions and basic density on bottom-up direction. Saturate moisture content increased, considering the same direction. Anisotropic coefficient presented increase tendency up to 1.30 m height followed by stabilization from that position to the top. It was observed decreasing tendency of longitudinal contraction to approximately 40% of total height, followed by increasing up to the insertion of the first living branch. Mean anisotropic coefficient and basic density were 2.3kg m-³ and 594 kg m-³, respectively. Air dry condition showed greater static bending resistance than when saturate. Values of rupture and elasticity modulus were similar to those found in studies with Eucalyptus saligna and Carya illinoinensis.Esse estudo objetivou avaliar as propriedades físico-mecânicas da madeira de Chrysophyllum marginatum (Hook. e Arn.) Radlk. Foram utilizadas três árvores com 20,3 ± 6 cm de diâmetro. Por regressão, determinou-se a variação no sentido base-topo de retratibilidade, coeficiente anisotrópico, teor de umidade saturado e massa específica básica. Para caracterizar a flexão estática na primeira tora, nas condições úmida e seca ao ar, foi realizada análise de variância pelo teste de Tukey. Observou-se decréscimo das contrações radial e tangencial e da massa específica básica da madeira no sentido base-topo, inversamente ao teor de umidade saturado, que apresentou uma variação crescente. Na análise do coeficiente anisotrópico, verificou-se uma tendência de acréscimo até 1,30 m de altura, seguido de estabilização a partir dessa posição até o topo. A contração longitudinal apresentou tendência de decréscimo até, aproximadamente, 40% de altura, seguido de acréscimo até a altura de inserção do primeiro galho vivo. As médias do coeficiente anisotrópico e da massa específica básica foram 2,3 kg m-3 e 594 kg m-3, respectivamente. A condição de umidade seca ao ar apresentou maior resistência à flexão estática do que quando saturada e os valores dos módulos de elasticidade e de ruptura foram semelhantes aos encontrados em estudos de Eucalyptus saligna e Carya illinoinensis.Embrapa Florestas2023-03-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/88410.4336/2016.pfb.36.86.884Pesquisa Florestal Brasileira; v. 36 n. 86 (2016): abr./jun.; 135-143Pesquisa Florestal Brasileira; Vol. 36 No. 86 (2016): abr./jun.; 135-1431983-26051809-3647reponame:Pesquisa Florestal Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/884/484Copyright (c) 2016 Jussan Albarello de Cezaro, Rômulo Trevisan, Rafaelo Balbinothttps://creativecommons.org/licenses/by-nc-nd/4.0info:eu-repo/semantics/openAccessAlbarello de Cezaro, JussanTrevisan, RômuloBalbinot, Rafaelo2023-03-16T12:50:18Zoai:pfb.cnpf.embrapa.br/pfb:article/884Revistahttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/PUBhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/oaipfb@embrapa.br || revista.pfb@gmail.com || patricia.mattos@embrapa.br1983-26051809-3647opendoar:2023-03-16T12:50:18Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Physical and mechanical properties of Chrysophyllum marginatum wood Propriedades físico-mecânicas da madeira de Chrysophyllum marginatum |
title |
Physical and mechanical properties of Chrysophyllum marginatum wood |
spellingShingle |
Physical and mechanical properties of Chrysophyllum marginatum wood Albarello de Cezaro, Jussan Shrinkage Anisotropic coefficient Static bending Retratibilidade Coeficiente anisotrópico Flexão estática |
title_short |
Physical and mechanical properties of Chrysophyllum marginatum wood |
title_full |
Physical and mechanical properties of Chrysophyllum marginatum wood |
title_fullStr |
Physical and mechanical properties of Chrysophyllum marginatum wood |
title_full_unstemmed |
Physical and mechanical properties of Chrysophyllum marginatum wood |
title_sort |
Physical and mechanical properties of Chrysophyllum marginatum wood |
author |
Albarello de Cezaro, Jussan |
author_facet |
Albarello de Cezaro, Jussan Trevisan, Rômulo Balbinot, Rafaelo |
author_role |
author |
author2 |
Trevisan, Rômulo Balbinot, Rafaelo |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Albarello de Cezaro, Jussan Trevisan, Rômulo Balbinot, Rafaelo |
dc.subject.por.fl_str_mv |
Shrinkage Anisotropic coefficient Static bending Retratibilidade Coeficiente anisotrópico Flexão estática |
topic |
Shrinkage Anisotropic coefficient Static bending Retratibilidade Coeficiente anisotrópico Flexão estática |
description |
This study aimed to evaluate the physical and mechanical properties of the wood of Chrysophyllum marginatum (Hook. And Arn.) Radlk. We used three trees with 20.3 ± 6 cm of diameter. It was determined by regression analysis the variation bottom-up of shrinkage, anisotropic coefficient, saturate moisture content and basic density. To characterize the static bending in the first log, in saturate and air dried conditions, it was performed variance analysis using Tukey›s test. It was observed a decrease in radial and tangential contractions and basic density on bottom-up direction. Saturate moisture content increased, considering the same direction. Anisotropic coefficient presented increase tendency up to 1.30 m height followed by stabilization from that position to the top. It was observed decreasing tendency of longitudinal contraction to approximately 40% of total height, followed by increasing up to the insertion of the first living branch. Mean anisotropic coefficient and basic density were 2.3kg m-³ and 594 kg m-³, respectively. Air dry condition showed greater static bending resistance than when saturate. Values of rupture and elasticity modulus were similar to those found in studies with Eucalyptus saligna and Carya illinoinensis. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-03-16 |
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://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/884 10.4336/2016.pfb.36.86.884 |
url |
https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/884 |
identifier_str_mv |
10.4336/2016.pfb.36.86.884 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/884/484 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2016 Jussan Albarello de Cezaro, Rômulo Trevisan, Rafaelo Balbinot https://creativecommons.org/licenses/by-nc-nd/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2016 Jussan Albarello de Cezaro, Rômulo Trevisan, Rafaelo Balbinot https://creativecommons.org/licenses/by-nc-nd/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Embrapa Florestas |
publisher.none.fl_str_mv |
Embrapa Florestas |
dc.source.none.fl_str_mv |
Pesquisa Florestal Brasileira; v. 36 n. 86 (2016): abr./jun.; 135-143 Pesquisa Florestal Brasileira; Vol. 36 No. 86 (2016): abr./jun.; 135-143 1983-2605 1809-3647 reponame:Pesquisa Florestal Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Florestal Brasileira (Online) |
collection |
Pesquisa Florestal Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pfb@embrapa.br || revista.pfb@gmail.com || patricia.mattos@embrapa.br |
_version_ |
1783370931708624896 |