Influence of growth ring number and width on elastic constants of poplar

IF 1.3 4区农林科学 Q2 MATERIALS SCIENCE, PAPER & WOOD

Bioresources Pub Date : 2023-10-27 DOI:10.15376/biores.18.4.8484-8502

Murat Aydın, Tuğba Yılmaz Aydın

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引用次数: 0

Abstract

The objective of this work was to evaluate the effect of growth ring number (specimens including 2, 4, and 6 rings from the bark) and growth ring width on elastic constants in the radial direction of Populus x canadensis, which has not been revealed before. The longitudinal (2.25 MHz) and transverse (1 MHz) ultrasonic waves were propagated to calculate the longitudinal (VRR) and shear (VRL, VLR, VTR, and VRT) wave velocities and used to determine the elasticity modulus (ER), and shear moduli (GRL and GRT). The average growth ring widths of specimens including 2, 4, and 6 rings were 17.0 mm, 17.8 mm, and 18.2 mm, respectively. According to the results, only VRL steadily increased with increased ring number, while other velocities fluctuated. The same fluctuations were observed for moduli except for GLR, which constantly increased with ring number. The influence of ring number on velocity was statistically significant only for VRL and VRT. However, all moduli were significantly affected by ring number. Linear regression statistics revealed that there were significant relations between the ring width and density, VRL, VLR, VRT, GRL, and GRT.

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生长环数和宽度对杨树弹性常数的影响

本研究的目的是评估生长环数(包括树皮的2、4和6个环)和生长环宽度对加拿大杨树径向弹性常数的影响，这是以前没有发现的。传播纵向(2.25 MHz)和横向(1 MHz)超声波，计算纵向(VRR)和剪切(VRL, VLR, VTR和VRT)波速，并用于确定弹性模量(ER)和剪切模量(GRL和GRT)。2、4、6环标本的平均生长环宽度分别为17.0 mm、17.8 mm和18.2 mm。结果表明，随着环数的增加，只有VRL稳定增加，而其他速度都是波动的。除GLR随环数的增加而不断增大外，其余模量均有相同的波动。环数对速度的影响仅在VRL和VRT上有统计学意义。然而，环数对所有模量都有显著影响。线性回归统计显示，环宽与密度、VRL、VLR、VRT、GRL、GRT之间存在显著相关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bioresources 工程技术-材料科学：纸与木材

CiteScore

2.90

自引率

13.30%

发文量

397

审稿时长

2.3 months

期刊介绍： The purpose of BioResources is to promote scientific discourse and to foster scientific developments related to sustainable manufacture involving lignocellulosic or woody biomass resources, including wood and agricultural residues. BioResources will focus on advances in science and technology. Emphasis will be placed on bioproducts, bioenergy, papermaking technology, wood products, new manufacturing materials, composite structures, and chemicals derived from lignocellulosic biomass.