Akademik Veri Yönetim Sistemi
EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS, cilt.80, sa.4, ss.907-922, 2022 (SCI-Expanded)
The objective of this study is to predict the optimum pressing parameters for the best mechanical properties of plywood panels manufactured with polystyrene instead of formaldehyde-based adhesives using artificial neural network (ANN). For this purpose, veneers from four different wood species (beech, poplar, alder and pine) were produced with styrofoam, also known as expanded polystyrene (EPS) in different pressing parameters. For the 6 mm thick wood veneer/polystyrene composite plywood (WPCP) panels, pressing temperature of 130 degrees C, 140 degrees C and 150 degrees C and pressing time of 1 min/mm (total 6 min), 1.34 min/mm (total 8 min) and 1.67 min/mm (total 10 min) were used. Some of the mechanical properties of the WPCP panels such as bonding strength, bending strength and modulus of elasticity were determined according to respective standards. The experimental data used in this study were obtained from a previous study from the authors. By analyzing this data with ANN, the best prediction models were determined. According to the results obtained from the models, the optimum pressing temperature and pressing time values of WPCP panels, which give the best values for all three mechanical properties, are 138 degrees C and 8.2 min for beech, 139 degrees C and 10 min for poplar, 147 degrees C and 7.6 min for alder, and 147 degrees C and 9 min for pine. Moreover, the highest bonding strength, bending strength and modulus of elasticity values among all groups were obtained from beech WPCP panels as 1.70 N/mm(2), 110.22 N/mm(2) and 8907.83 N/mm(2), respectively.