Translational stiffness and resistance of sandwich panel connections at elevated temperature

Comparative Experimental Analysis of the Fire Resistance of Sandwich Panels with Polyisocyanourate Core Reinforced with Fiberglass Fabric

“…However, for Sample 2 at 20 min, the maximum displacement in the order of 14 mm in the opposite direction of the furnace (outside) was reached. These results can be compared with those obtained by Garifulin et al where they describe that the tests were stopped when the samples reached a displacement of 20 mm, both at room temperature and at high temperatures, taking into account that they used a displacement-controlled test machine, with a loading speed set at 1 mm/min [6].…”

“…On the other hand, a thermographic camera and laser tape were also used to monitor and measure the horizontal deformation of the systems during the tests. Further all results were visually inspected throughout the procedures, same methodology applied in the research of Garifulin et al [6].…”

“…In this sense, the sandwich panel has the advantage over other panels, since it has thermal and acoustic insulation incorporated in its core, avoiding the need to add frames and back panels that represent more support and cladding material, increasing the budget and reducing the useful free spaces [5]. Likewise, the use of sandwich panels as stabilizing members can contribute to a considerable saving of steel for structural members at room temperature, which generates a decrease in costs and impacts the environment in smaller quantities [6].…”

“…It is important to know that sandwich panel claddings are generally made of steel [3]. For the core, various materials can be used, such as polyurethane (PUR), polyisocyanurate (PIR), expanded polystyrene (EPS), extruded polystyrene (XPS) and mineral wool (MW) [3,6]. From a thermodynamic point of view, PIR materials are considered superior to PUR, as they are more thermally stable compared to the urethane bonds found in PUR foams.…”