Abstract
This research paper studies the influence that the number of plies has on the identification of the mechanical properties of poplar Laminated Veneer Lumber (LVL) from tensile tests such as its stiffness. LVL poplar specimens were prepared with different ply configurations and subjected to uniaxial tensile tests. Both longitudinal and transverse stiffnesses were characterized in this research. The results show that the ply configuration influences the mechanical properties. The influence of the glued faces, the presence of lathe checks, and the compression ratio of veneers were studied during the manufacturing of the LVL. All these results provide valuable information for the design and optimization of laminated wood structures. An analytical modelling strategy is proposed to account for the effect of ply numbers, ply orientations, the compression ratio of veneers and the glue used on the stiffness of poplar laminate both in longitudinal and transverse directions.
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Acknowledgements
The research that led to the results presented received funds from the French National Research Agency under the BOOST project (ANR-21-CE43-0008-01). The authors thank the LaBoMaP Laboratory, Cluny, France for providing the Poplar veneers used in this study, through the research project ANR BOOST.
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This work was supported by the French National Research Agency under the BOOST project (ANR-21-CE43-0008-01).
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Axel Peignon is the first author, responsible for sample preparation and testing, data analysis, and the preparation of the paper. Joël Serra provided technical support in tensile testing, data analysis, and comments for the paper. Florent Eyma and Arthur Cantarel provided technical guidance for the research and the preparation of the paper. Bruno Castanié is the corresponding author and provided technical guidance for the research and the preparation of the paper.
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Peignon, A., Serra, J., Cantarel, A. et al. Toward the modelling of laminated veneer lumber stiffness and the influence of the number of plies. Wood Sci Technol (2024). https://doi.org/10.1007/s00226-024-01558-x
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DOI: https://doi.org/10.1007/s00226-024-01558-x