Academic Bibliography

 Search 200 years of publications by Ghent University researchers.
Advanced search
1 file | 2.20 MB
Add to list
  1. Search results
  2. Understanding the effect of growth ri...

Understanding the effect of growth ring orientation on the compressive strength perpendicular to the grain of thermally treated wood

Wanzhao Li, Zheng Zhang, Xinzhou Wang, Changtong Mei, Joris Van Acker (UGent) and Jan Van den Bulcke (UGent)
(2021) WOOD SCIENCE AND TECHNOLOGY. 55(5). p.1439-1456
Author
Organization
Abstract
Thermal treatment (TMT) impacts the mechanical strength of wood. Investigating the compressive strength (CS) of thermally treated wood with variable growth ring orientation is helpful to better understand the effect of TMT on mechanical performance of wood. Specimens, cut from spruce wood, were classified according to two growth ring orientations, namely 10 degree (f(c)10) and 40 degree (f(c)40), these two situations commonly exist in practice. Six replicates from each type were thermally treated with saturated steam at two different temperatures (180 degrees C and 210 degrees C), respectively. Dimensional changes, chemical composition, and microstructure of the specimens were monitored before and after TMT using FTIR spectroscopy and optical microscopy. Compressive stress of specimens was determined and, simultaneously, strain distribution was recorded using digital image correlation. The results show that TMT caused mass loss and shrinkage in tangential and radial directions. Changes in chemical composition were mainly due to hemicellulose degradation. For both treated and untreated samples, the CS perpendicular to the grain and deformation of f(c)10 samples were higher and smaller than that of f(c)40 samples, respectively. TMT results in brittle wood tissue, which hampered strain transfer along growth rings and changed failure modes of samples. Mechanical strength of f(c)40 samples was sensitive to be impacted by TMT. Prior to TMT, failure modes of f(c)10 and f(c)40 specimens were shear deformation and growth ring buckling, respectively. After TM, failure modes of all specimens changed to shear failure parallel to growth ring boundaries. These structural changes mainly occurred in earlywood. The output of this work contributes to the effective application and scientific evaluation of mechanical performance of TMT wood by considering growth ring orientations.
Keywords
Industrial and Manufacturing Engineering, Plant Science, General Materials Science, Forestry, HARDNESS, DENSITY, BIRCH

Downloads

  • Download
    (...).pdf
    • full text (Published version)
    • |
    • UGent only
    • |
    • PDF
    • |
    • 2.20 MB

Citation

Please use this url to cite or link to this publication:

MLA
Li, Wanzhao, et al. “Understanding the Effect of Growth Ring Orientation on the Compressive Strength Perpendicular to the Grain of Thermally Treated Wood.” WOOD SCIENCE AND TECHNOLOGY, vol. 55, no. 5, 2021, pp. 1439–56, doi:10.1007/s00226-021-01323-4.
APA
Li, W., Zhang, Z., Wang, X., Mei, C., Van Acker, J., & Van den Bulcke, J. (2021). Understanding the effect of growth ring orientation on the compressive strength perpendicular to the grain of thermally treated wood. WOOD SCIENCE AND TECHNOLOGY, 55(5), 1439–1456. https://doi.org/10.1007/s00226-021-01323-4
Chicago author-date
Li, Wanzhao, Zheng Zhang, Xinzhou Wang, Changtong Mei, Joris Van Acker, and Jan Van den Bulcke. 2021. “Understanding the Effect of Growth Ring Orientation on the Compressive Strength Perpendicular to the Grain of Thermally Treated Wood.” WOOD SCIENCE AND TECHNOLOGY 55 (5): 1439–56. https://doi.org/10.1007/s00226-021-01323-4.
Chicago author-date (all authors)
Li, Wanzhao, Zheng Zhang, Xinzhou Wang, Changtong Mei, Joris Van Acker, and Jan Van den Bulcke. 2021. “Understanding the Effect of Growth Ring Orientation on the Compressive Strength Perpendicular to the Grain of Thermally Treated Wood.” WOOD SCIENCE AND TECHNOLOGY 55 (5): 1439–1456. doi:10.1007/s00226-021-01323-4.
Vancouver
1.
Li W, Zhang Z, Wang X, Mei C, Van Acker J, Van den Bulcke J. Understanding the effect of growth ring orientation on the compressive strength perpendicular to the grain of thermally treated wood. WOOD SCIENCE AND TECHNOLOGY. 2021;55(5):1439–56.
IEEE
[1]
W. Li, Z. Zhang, X. Wang, C. Mei, J. Van Acker, and J. Van den Bulcke, “Understanding the effect of growth ring orientation on the compressive strength perpendicular to the grain of thermally treated wood,” WOOD SCIENCE AND TECHNOLOGY, vol. 55, no. 5, pp. 1439–1456, 2021.
@article{8717962,
  abstract     = {{Thermal treatment (TMT) impacts the mechanical strength of wood. Investigating the compressive strength (CS) of thermally treated wood with variable growth ring orientation is helpful to better understand the effect of TMT on mechanical performance of wood. Specimens, cut from spruce wood, were classified according to two growth ring orientations, namely 10 degree (f(c)10) and 40 degree (f(c)40), these two situations commonly exist in practice. Six replicates from each type were thermally treated with saturated steam at two different temperatures (180 degrees C and 210 degrees C), respectively. Dimensional changes, chemical composition, and microstructure of the specimens were monitored before and after TMT using FTIR spectroscopy and optical microscopy. Compressive stress of specimens was determined and, simultaneously, strain distribution was recorded using digital image correlation. The results show that TMT caused mass loss and shrinkage in tangential and radial directions. Changes in chemical composition were mainly due to hemicellulose degradation. For both treated and untreated samples, the CS perpendicular to the grain and deformation of f(c)10 samples were higher and smaller than that of f(c)40 samples, respectively. TMT results in brittle wood tissue, which hampered strain transfer along growth rings and changed failure modes of samples. Mechanical strength of f(c)40 samples was sensitive to be impacted by TMT. Prior to TMT, failure modes of f(c)10 and f(c)40 specimens were shear deformation and growth ring buckling, respectively. After TM, failure modes of all specimens changed to shear failure parallel to growth ring boundaries. These structural changes mainly occurred in earlywood. The output of this work contributes to the effective application and scientific evaluation of mechanical performance of TMT wood by considering growth ring orientations.}},
  author       = {{Li, Wanzhao and Zhang, Zheng and Wang, Xinzhou and Mei, Changtong and Van Acker, Joris and Van den Bulcke, Jan}},
  issn         = {{0043-7719}},
  journal      = {{WOOD SCIENCE AND TECHNOLOGY}},
  keywords     = {{Industrial and Manufacturing Engineering,Plant Science,General Materials Science,Forestry,HARDNESS,DENSITY,BIRCH}},
  language     = {{eng}},
  number       = {{5}},
  pages        = {{1439--1456}},
  title        = {{Understanding the effect of growth ring orientation on the compressive strength perpendicular to the grain of thermally treated wood}},
  url          = {{http://doi.org/10.1007/s00226-021-01323-4}},
  volume       = {{55}},
  year         = {{2021}},
}
Altmetric
View in Altmetric
Web of Science
Times cited: