The following paper studies and classifies the existing and new experimental data on changes in physical and mechanical properties of compressed wood. Here we have determined the patterns of changes in physical and mechanical characteristics of compressed wood, deformation properties of soft leaf wood required to develop compaction modes and wood parameters, and opportunities for a complete substitute of precious wood and other scarce and expensive compressed wood materials. We have analyzed the functional dependencies on wood density for physical and mechanical characteristics of the compressed wood, considered the values of quality factors (strength, hardness and wear) and their application at the highest possible compaction and revealed the exact methods for studying the process of deep compaction. The work offers a method for calculating the experimental observation of wood performance parameters. The research is focused on systematizing the existing experimental data and obtaining new data on the changes in physical and mechanical properties of compressed wood, including aspen wood. When studying physical and mechanical properties of wood, a substantial variation of measurement results is observed due to a large number of independent factors. This is particularly true when testing compacted wood, since various conditions and compaction modes are to be considered. Therefore, to achieve objective view on the principles regulating the changes in physical and mechanical properties of compressed wood, one requires careful statistical analysis of many experiments. For the most part, statistical analysis is aimed at identifying the optimal industrial use of compressed wood and prospects of such use, finding the most profitable degrees of wood compaction depending on its use, and analysing compressed wood characteristics depending on its density. The present studies were aimed at determining deformation properties of soft leaf wood required to develop compaction modes and identify their parameters, clarifying the opportunities for a complete substition of precious wood and other scarce and expensive compressed wood materials, and identifying the principles regulating the changes in physical and mechanical properties of compressed wood in order to predict these properties.
drevesina, fiziko-mehanicheskie harakteristiki, uplotnenie drevesiny, statisticheskiy analiz
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