Effects of saturated vapor pre-steaming on drying strain in asian white birch: Experimentation and modelling
- Autores: Zongying Fu, Stavros Avramidis, Jingyao Zhao, Yingchun Cai, Yongdong Zhou
- Localización: Maderas: Ciencia y tecnología, ISSN 0717-3644, ISSN-e 0718-221X, Vol. 21, Nº. 1, 2019, págs. 77-88
- Idioma: inglés
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Resumen
The effect of low pressure saturated vapor pre-steaming on restrained shrinkage strain, mechano-sorptive creep and the distribution of moisture content was investigated during conventional drying of wood discs. Mechano-sorptive creep was furthermore modelled by artificial neural network theory with five inputs, i.e., pre-steaming and drying temperatures, wood moisture content, relative humidity and distance from the pith. Results revealed that, pre-steaming partly reduced the variation of moisture content distribution along radial direction, increased restrained shrinkage strain in heartwood and decreased in sapwood and slightly decreased the mechano-sorptive creep. The neural network model provided reasonable prediction results, namely, the coefficient of determination for training, validation and test sets greater than 0.95.
Keywords: Artificial neural network, Betula platyphylla, mechano-sorptive creep, restrained shrinkage strain, white birch discs
