FRACTURE TESTING OF EDGE-NOTCHED TIMBER BEAMS WITH DIFFERENT GROWTH RING ORIENTATIONS

IF 0.9 4区农林科学 Q3 MATERIALS SCIENCE, PAPER & WOOD

Wood Research Pub Date : 2023-06-28 DOI:10.37763/wr.1336-4561/68.3.558571

Tamás Király, Z. Karácsonyi

引用次数: 1

Abstract

The purpose of this research is to test Norway spruce specimens with different growth ring orientations weakened by edge-notch until failure. In the experiments the specimens were subjected to 3-point bending, tension and compression tests. In addition, failure mode during loading is investigated using a high-resolution camera. Based on the measurement results the correlation between latewood ratio, ultimate force, ultimate elongation/deflection, calculated moduli, growth ring orientation and diameter of the growth ring at the edge-notch were obtained. Based on the population data of the three tests conducted, only one parameter pair, namely the ratio of latewood to calculated modulus, influences the measurement results to almost the same extent. The other parameter pairs show different values and correlations.

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不同生长环取向的边缘切口木梁的断裂试验

本研究的目的是测试不同生长环方向的挪威云杉试样，边缘缺口削弱直至破坏。在试验中，试件进行了三点弯曲、三点拉伸和三点压缩试验。此外，还使用高分辨率相机研究了加载过程中的失效模式。根据测量结果，得到了后期木材比、极限力、极限伸长/挠度、计算模量、生长环取向和生长环边缘缺口处直径之间的相关关系。根据所进行的三次试验的总体数据，只有一个参数对，即后期木材与计算模量的比率，对测量结果的影响程度几乎相同。其他参数对显示不同的值和相关性。

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

Wood Research 工程技术-材料科学：纸与木材

CiteScore

2.40

自引率

15.40%

发文量

审稿时长

5.4 months

期刊介绍： Wood Research publishes original papers aimed at recent advances in all branches of wood science (biology, chemistry, wood physics and mechanics, mechanical and chemical processing etc.). Submission of the manuscript implies that it has not been published before and it is not under consideration for publication elsewhere.