Study on the Fracture Toughness of Softwood and Hardwood Estimated by Boundary Effect Model

The tensile strength and fracture toughness of softwood and hardwood are measured by the Boundary Effect Model (BEM). The experimental results of single-edge notched three-point bending tests indicate that the BEM is an appropriate method to estimate the fracture toughness of the present fibrous and...

Full description

Saved in:
Bibliographic Details
Published in:Materials 2022-06, Vol.15 (11), p.4039
Main Authors: Ji, Hong-Mei, Liu, Xiao-Na, Li, Xiao-Wu
Format: Article
Language:English
Subjects:
Bionics
Cellulose
Fracture toughness
Grain size
Mechanical properties
Microstructure
Tensile strength
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The tensile strength and fracture toughness of softwood and hardwood are measured by the Boundary Effect Model (BEM). The experimental results of single-edge notched three-point bending tests indicate that the BEM is an appropriate method to estimate the fracture toughness of the present fibrous and porous woods. In softwood with alternating earlywood and latewood layers, the variation in the volume percentage of different layers in a small range has no obvious influence on the mechanical properties of the materials. In contrast, the hardwood presents much higher tensile strength and fracture toughness simultaneously due to its complicated structure with crossed arrangement of the fibers and rays and big vessels diffused in the fibers. The present research findings are expected to provide a fundamental insight into the design of high-performance bionic materials with a highly fibrous and porous structure.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma15114039