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FLORAM receives Impact Factor

We are pleased to announce that FLORAM has received its first impact factor rating in the 2022 Journal Citation Reports (JCR).

Now FLORAM has the highest impact factor among Brazilian Forest Sciences journals.

Floresta e Ambiente
https://floram.org/article/doi/10.4322/floram.2012.064
Floresta e Ambiente
Original Article Forest Products

Influência da Classe Diamétrica nos Índices de Rachadura da Madeira em Liquidambar styraciflua

Influence of Diameter Classes on the End Split Rates of Liquidambar styraciflua Sawn Wood

Lima, Israel Luiz de; Freitas, Jaime Anisio de; Garcia, José Nivaldo

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Resumo

As tensões de crescimento das árvores podem ser avaliadas por meio da análise das rachaduras de extremidade observadas em pranchas verdes e secas. Dessa forma, este trabalho teve como objetivo estudar a evolução do comprimento das rachaduras, durante o processo de secagem natural da madeira serrada de Liquidambar styraciflua, de 24 anos, em função de diferentes classes de diâmetro (superior, mediana e inferior) e duas posições verticais, ao longo da altura da árvore. De acordo com os resultados obtidos, pôde-se concluir que as rachaduras de extremidade de prancha seca ou verde foram influenciadas apenas pela classe de diâmetro, em que a classe superior apresentou os maiores comprimentos de rachaduras e a classe inferior, os menores. Foi obtida uma relação positiva entre rachadura de prancha seca e rachadura de prancha verde.

Palavras-chave

madeira serrada, tensão de crescimento, rachadura.

Abstract

The growth stresses of trees can be evaluated by means of the analysis of the end splitting on green and dry boards. Thus, this work aimed to study the evolution of the splitting length during the process of natural drying in the sawn wood of 24-year-old Liquidambar styraciflua, as a function of different diameter classes (upper, middle and lower) and two vertical positions along the stem commercial height. According to the results obtained, it was possible to conclude that the end splitting on green and dry boards was influenced only by the diameter class, where the upper class presented the greatest length of splitting while the lower class showed the smallest length. A strong relationship between the end splitting of dry board and green board was verified.

Keywords

sawn wood, growth stresses, splitting.
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