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Ciência Florestal
Article . 2008 . Peer-reviewed
Data sources: Crossref
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Ciência Florestal
Article
License: CC BY NC
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Características tecnológicas das madeiras de <i>Luehea divaricata, Carya illinoinensis </i>e <i>Platanus x acerifolia </i>quando submetidas ao vergamento.

Authors: Darci Alberto Gatto; Clovis Roberto Haselein; Elio José Santini; José Newton Cardoso Marchiori; Miguel Antão Durlo; Leandro Calegari; Diego Martins Stangerlin;

Características tecnológicas das madeiras de <i>Luehea divaricata, Carya illinoinensis </i>e <i>Platanus x acerifolia </i>quando submetidas ao vergamento.

Abstract

O presente trabalho foi desenvolvido com o objetivo de investigar as características do vergamento da madeira de Platanus x acerifolia (Ait.) Willd. (plátano), Luehea divaricata Mart. et Zucc (açoita-cavalo) e Carya illinoinensis (Wangenh) K. Koch (nogueira-pecã) procedentes de florestas não-manejadas para esse fim, das regiões da Depressão Central e Encosta Superior do Nordeste do estado do Rio Grande do Sul, Brasil. Foram abatidas cinco árvores adultas representativas de cada espécie, por região de estudo, totalizando trinta árvores. De cada árvore abatida, retirou-se uma tora de 2,50 m de comprimento (partindo da base), que foram transportadas para serraria e desdobradas. De cada tora, retirou-se uma prancha central de 8 cm de espessura, da qual foram confeccionados corpos-de-prova para ensaios de vergamento. Os corpos-de-prova foram condicionados em câmara climatizada até um teor de umidade de aproximadamente 14%. Os corpos-de-prova foram cozidos em água fervente por 35 minutos e vergados em raios de 16 e 21 cm. Para a qualificação dos defeitos de vergamento, foi seguida a metodologia descrita por Vorreiter (1958). Os principais resultados indicam que a madeira de nogueira-pecã verga melhor que as demais espécies, independentemente do raio testado. Aparentemente, a porosidade em anel, característica da espécie, contribuiu para o resultado. Já as madeiras de açoita-cavalo e plátano, com porosidade difusa e com grande proporção de parênquima, apresentaram uma grande quantidade de peças defeituosas.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
10
Top 10%
Top 10%
Average
gold