Wood Industry and Engineering, cilt.7, sa.2, ss.1-11, 2025 (Hakemli Dergi)
Sandwich panels are favorable materials for structural or non-structural components due to their durability, light weight, and long service life. The strength of a structural system often depends on the interconnections between its elements. In this study, the screw withdrawal strength of wood-based sandwich panels reinforced with basalt fiber-reinforced polymers (BFRP), glass fiber-reinforced polymers (GFRP), and jute fabric, using a polyurethane adhesive (PUR-D4), was investigated. In predicting the screw withdrawal resistance, withdrawal load capacity, density, and withdrawal stiffness of the wood-based materials BFRP, GFRP, and jute fabric in each layer, were considered. Moreover, the screw withdrawal strength of the panels was examined. Screw withdrawal tests of panels were conducted according to TS EN 13446 standard. The highest screw withdrawal strength was obtained for the based sandwich panels reinforced with GFRP (9.31 N/mm2). Furthermore, the difference between experimental and predicted screw withdrawal resistance changed from 4% to 9%. Furthermore, the highest air-dry density was obtained for the based sandwich panels reinforced with GFRP (0.620 g/cm³). Furthermore, the difference between experimental and predicted screw withdrawal resistance changed from 1.2% to 2%. In addition, the wood-based s