Open Access
ARTICLE
Measurement and Analysis of Three-Dimensional Surface Topography of Sawn Timber Based on Scanning Probe Method
Yuhang He1, Rongzhuo Zhang1, Sarah Mohrmann2, Zheng Wang1,*, Jiujin Fang3
1
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and
Technology, Nanjing Forestry University, Nanjing, 210037, China
2
College of Civil Engineering, Nanjing Forestry University, Nanjing, 210037, China
3
College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing, 210037, China
* Corresponding Author: Zheng Wang. Email:
(This article belongs to this Special Issue: Advanced Wood Composites from Renewable Materials)
Journal of Renewable Materials 2022, 10(12), 3303-3311. https://doi.org/10.32604/jrm.2022.020681
Received 06 December 2021; Accepted 18 January 2022; Issue published 14 July 2022
Abstract
In order to explore the characteristics of the three-dimensional surface morphology of sawn timber, a threedimensional wood surface morphology tester based on the scanning probe method and the principle of atomic
force microscope was used to test the three-dimensional surface morphology of three kinds of sawn timber
and calculate its surface roughness. This study also analyzed the reasonable plan for the value of wood surface
roughness and the advantages of the three-dimensional shape tester, as well as the influence of tree species, three
sections, air-dry density and other factors on the surface roughness of the specimen after mechanical processing. The
results have shown that it is a more appropriate method to select the calculated values of S
a and S
q as the evaluation
of the surface roughness of wood with random surface characteristics. The three-dimensional wood surface topography tester can efficiently, conveniently and accurately display the three-dimensional topography of wood at a
micron-level resolution, and is characterized by high efficiency and good durability. The three-dimensional surface
morphology characteristics of the three sawn woods correspond to their roughness. The surface roughness of woods
is arranged as follows: Sitka spruce > Larch > Beech. For the same tree species, the roughness of the corresponding
section after sawing is as follows: chordwise section > crosswise section > radial section. The radial section has lower
roughness than the other surfaces. The surface roughness of the wood after sawing is mainly related to its air-dry
density. The above is intended to provide a useful reference for the application of measuring and evaluating the
surface roughness of sawn timber using the three-dimensional surface topography test method.
Keywords
Cite This Article
He, Y., Zhang, R., Mohrmann, S., Wang, Z., Fang, J. (2022). Measurement and Analysis of Three-Dimensional Surface Topography of Sawn Timber Based on Scanning Probe Method.
Journal of Renewable Materials, 10(12), 3303–3311.