Prediction of the color change of heat-treated wood during artificial weathering by artificial neural network
Prediction of the color change of heat-treated wood during artificial weathering by artificial neural network
复制标题
DOI：
10.1007/s00107-019-01449-0
复制
发表时间：
2019-08
影响因子：
2.6
通讯作者：
T. Nguyen;Thi Hai Van Nguyen;Xiaodi Ji;Bingnan Yuan;H. Trinh;Khoa Thi Lanh Do;Minghui Guo
中科院分区：
文献类型：
--
作者：
T. Nguyen;Thi Hai Van Nguyen;Xiaodi Ji;Bingnan Yuan;H. Trinh;Khoa Thi Lanh Do;Minghui Guo
采用人工神经网络（ANN）模型对热处理木材在人工气候老化过程中的颜色变化进行预测。采用化学成分分析法对热处理木材颜色变化的原因进行了分析。该网络包括一个由三个输入节点组成的输入层，即，风化暴露时间，热处理温度，热处理木材的种类，一个隐藏层使用六个神经元和一个输出节点组成的输出层，即热处理木材的颜色。隐层采用双曲正切sigmoid传递函数，训练算法采用Levenberg-Marquardt反向传播算法。根据结果，对于训练、验证和测试数据集的颜色变化（ΔE）预测，平均绝对百分比误差（MAPE）分别为8.17%、9.70%和9.85%。所有数据集的决定系数（R2）超过0.92，得到与建议的人工神经网络模型。这些结果表明，人工神经网络模型可以成功地用于预测热处理木材在人工气候老化过程中的颜色变化。红外光谱分析结果表明，热处理木材在人工气候老化过程中颜色的变化是由于化学组成的变化，特别是木质素和木材抽出物的光降解。
The purpose of this study was to predict the color change of heat-treated wood during artificial weathering by an artificial neural network (ANN) model. Chemical component analysis was used to analyze the origin of color change of the heat-treated wood. The network included an input layer consisting of three input nodes, namely, the weathering exposure time, heat treatment temperature, and heat-treated wood species, a hidden layer using six neurons and an output layer consisting of one output node, namely heat-treated wood color. A hyperbolic tangent sigmoid transfer function was used in the hidden layer, and the training algorithm was the Levenberg–Marquardt backpropagation. According to the results, the mean absolute percentage errors (MAPE) were 8.17, 9.70, and 9.85% for the prediction of color change (ΔE) for training, validation and testing data sets, respectively. Determination coefficients (R2) above 0.92 were obtained with the proposed ANN model for all data sets. These results showed that the ANN model can be successfully used for predicting the color change of heat-treated wood during artificial weathering. FTIR results showed that the color change of heat-treated wood during artificial weathering is due to the change in the chemical composition, especially the photodegradation of lignin and wood extractives.