It is important to know the changes in the mechanical properties of wood during freezing for engineering calculations of the wood material to be used in cold environments. Although this is important, the mechanical properties of wood at temperatures below − 100 °C have rarely been studied. In this study, the effects of cryogenic temperature (− 196 °C) on the bending strength, modulus of elasticity in bending and compression strength parallel to the grain of oven-dried and air-dried beech wood was investigated. As a result of the experiment, the mechanical strength properties of the wood increased during freezing. The increase in bending strength and modulus of elasticity values were higher in air-dried wood than those in oven-dried wood. However, the increase in compression strength values was determined at the same rates as 61% for air-dried and oven-dried wood. This increase in mechanical strength properties of wood during freezing could be explained by freezing of water in the wood, hardening of wood cell walls, decreasing intermolecular distance, increasing intermolecular force and stabilization of crystalline structure.

重要的是要知道冷冻过程中木材的机械性能变化，以便对寒冷环境中使用的木质材料进行工程计算。尽管这很重要，但很少研究温度低于− 100°C时木材的机械性能。在这项研究中，研究了低温（-196°C）对平行于烘干和风干山毛榉木的弯曲强度，弯曲弹性模量和抗压强度的影响。作为实验的结果，木材的机械强度特性在冷冻期间增加。风干木材的抗弯强度和弹性模量值的增加要高于烘箱干燥的木材。然而，确定的抗压强度值的增加与风干和烤箱干燥的木材的61％相同。冷冻过程中木材机械强度性能的提高可以解释为木材中水的冻结，木材细胞壁的硬化，分子间距离的减小，分子间力的增加以及晶体结构的稳定。