Understanding the Effect of Knots on Mechanical Properties of Chinese Fir under Bending Test by Using X-ray Computed Tomography and Digital Image Correlation-Reference-Cited by-同舟云学术

Understanding the Effect of Knots on Mechanical Properties of Chinese Fir under Bending Test by Using X-ray Computed Tomography and Digital Image Correlation

Published:2024-01-15 Issue:1 Volume:15 Page:174
ISSN:1999-4907
Container-title:Forests
language:en
Short-container-title:Forests

Author:

Zhang Xie¹²,Sun Huibo³,Xu Gangbiao¹,Duan Yanjun⁴,Jan Jan⁵^ORCID,Joris Joris⁵^ORCID,Shi Jiangtao³^ORCID

Affiliation:

1. College of Forestry, Central South University of Forestry Technology, Shaoshannan Road 498, Changsha 410004, China

2. Hunan Academy of Forestry, Shaoshannan Road 658, Changsha 410004, China

3. Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Longpan Road 159, Nanjing 210037, China

4. National Engineering Research Center of Biomaterials, Nanjing Forestry University, Nanjing 210037, China

5. UGent-Woodlab, Laboratory of Wood Technology, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium

Abstract

Knots in wood have a substantial impact on both the physical and mechanical properties of derived products. It is necessary to study their effect on the mechanical properties of wood and understand the mechanisms behind the effect. The modulus of elasticity (MOE) and modulus of rupture (MOR) of specimens without knots and with knots are measured using the three-point bending test. The size and position of knots are recorded. The specimens with knots are analyzed according to failure not at knots and failure at knots. For specimens with failure at knots, they are further divided into two sub-groups, i.e., failure around knots (FK-A) or failure in knots (FK-I).

Funder

National Key Research Development Program of China

Qing Lan Project of Jiangsu

Publisher

MDPI AG

Subject

Forestry

Link

https://www.mdpi.com/1999-4907/15/1/174/pdf

Reference24 articles.

1. Manufactured structural timber building materials and their durability;Singh;Constr. Build. Mater.,2019

2. Walker, J.C. (2006). Primary Wood Processing: Principles and Practice, Springer Science & Business Media.

3. The analytical influence of all types of knots on bending;Guindos;Wood Sci. Technol.,2014

4. Branch occlusion and discoloration of Betula alnoides under artificial and natural pruning;Wang;For. Ecol. Manage.,2016

5. Crack formation, strain distribution and fracture surfaces around knots in thermally modified timber loaded in static bending;Olsson;Wood Sci. Technol.,2020