The single exponential kinetics (SEK) and parallel exponential kinetics (PEK) models were fitted to kinetic sorption data of welded and unwelded Scots pine (Pinus sylvestris L.) and European beech (Fagus sylvatica L.). Furthermore, diffusion coefficients of water vapour in wood were determined using two different Fickian diffusion solutions. The objective was to identify how well these models could represent the moisture contents of the specimens and to characterize differences between the sorption behaviour of welded and unwelded wood. This knowledge can be used to enhance the moisture resistance of welded wood, develop drying schedules, and improve the quality of timbers. The PEK and SEK models provided the most precise and the second most precise fits to the sorption kinetic data, respectively. The two Fickian models are equivalent when both the infinite series are truncated at n = 10 $n=10$ . The Fickian models also exhibited the highest discrepancy with the experimental data. Nevertheless, the Fickian models fit relatively better to the sorption data of the welded wood than to that of the unwelded wood. This behaviour may be due to the rigid and less-swelling structure of the welded bond line.

中文翻译：

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欧洲山毛榉和樟子松焊接胶层水蒸气吸附参数估计和模型选择

单指数动力学 (SEK) 和平行指数动力学 (PEK) 模型适用于焊接和未焊接欧洲赤松的动力学吸附数据 (樟子松L.) 和欧洲山毛榉 (山毛榉L.）。此外，使用两种不同的 Fickian 扩散溶液确定了木材中水蒸气的扩散系数。目的是确定这些模型如何很好地代表样本的水分含量，并表征焊接和未焊接木材的吸附行为之间的差异。这些知识可用于增强焊接木材的防潮性、制定干燥计划并提高木材质量。PEK 和 SEK 模型分别为吸附动力学数据提供了最精确和第二精确的拟合。当两个无限级数都被截断为 n = 10 $n=10$ . Fickian 模型也表现出与实验数据的最大差异。然而，与未焊接木材相比，Fickian 模型更适合焊接木材的吸附数据。这种行为可能是由于焊接粘合线的刚性和低膨胀结构。