RELATIONSHIP BETWEEN WOOD DENSITY AND ANATOMY WITH DRILLING RESISTANCE BY NON-DESTRUCTIVE EVALUATION METHOD

Q4 Environmental Science

Floresta Pub Date : 2023-07-03 DOI:10.5380/rf.v53i3.84759

Daiana Souza DE Jesus, J. T. S. Oliveira, A. Nascimento

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Abstract

The Resistograph has emerged as efficient non-destructive evaluation method, because it allows the fast assessment of mechanical resistance, density and other wood properties. The aim of the present study is to assess the influence of wood density and anatomy on resistance to resistographi drilling. Twenty trees of Eucalyptus grandis x Eucalyptus urophylla hybrids, at the age group of 6 years, whose chest height discs (CHD) were removed and subjected to diametrical strip drilling, were herein assessed. The critical locations of amplitude radius were selected after the visual analysis of the resistogram; it was done to remove samples for the anatomical analysis and density carried out to determine several moisture contents. Resistance to drill increased due to increased wood density. Person’s correlation between resistance to drill and basic density reached 0.67; density in hygroscopic moisture was 0.65. There was moderate correlation between fiber wall amplitude and thickness (r=0.65). Cell wall thickness, fiber length and lumen diameter were the main anatomical features contributing to higher resistance to resistograph drilling.

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非破坏性评价方法研究木材密度和解剖结构与钻孔阻力的关系

Resistagraph是一种有效的无损评估方法，因为它可以快速评估木材的机械阻力、密度和其他特性。本研究的目的是评估木材密度和解剖结构对电阻钻抗性的影响。本文对20株6岁年龄组的巨桉×尾叶桉杂交种的树木进行了评估，这些树木的胸部高度盘（CHD）被移除并进行了径向条带钻孔。振幅半径的临界位置是在对电阻图进行视觉分析后选择的；它是为了去除用于解剖分析的样品，并进行密度以确定几种水分含量。由于木材密度增加，钻孔阻力增加。人的耐钻性与基本密度的相关性达到0.67；吸湿性水分的密度为0.65。纤维壁振幅和厚度之间存在中等相关性（r=0.65）。细胞壁厚度、纤维长度和管腔直径是导致电阻钻阻力较高的主要解剖特征。

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来源期刊

Floresta Environmental Science-Nature and Landscape Conservation

CiteScore

0.80

自引率

0.00%

发文量

期刊介绍： Revista Floresta admits articles of scientific contribution in Forest Science, in the areas of Nature Conservation, Economy and Forest Policy, Forest Management, Silviculture and Wood Technology. The main task is to promote and divulgate the development of Forest Science in Brazil and in the world. Articles published in Revista Floresta are under total responsibility of the authors, who are aware that they are original studies. It remains implicit that articles were not submitted for publication to any other divulgation media. It remains explicit the agreement of authors to norms of the journal and, along the development of their work, the observance of ethic aspects and respect of the current copyright legislation.