Sandwich panel

About: Sandwich panel is a research topic. Over the lifetime, 4665 publications have been published within this topic receiving 49812 citations.

Sandwich Panel joint

Abstract: A fastener extends through a bushing in a panel for joining the panel to a stationary frame. The bushing includes a tubular plug extending through the panel which includes a head, a shank, and a distal end. The bushing also includes a tubular sleeve extending into the panel and disposed around the plug shank, with an integral collar being fixedly bonded to a back surface of the panel. The panel is fixedly trapped between the collar and the plug head, and the plug distal end abuts the frame for predeterminedly spacing the collar from the frame.

Buckling of a Thin Face Layer on Winkler Foundation with Debonds

Abstract: The buckling behavior of a face layer debonded locally from the core of a sandwich panel is analyzed by considering a Euler beam on Winkler foundation with debonds subjected to in-plane compression. Exact closed form solutions of the buckling load and mode shape are obtained, and corresponding numerical results are given to illustrate the solution. Results indicate that the wrinkling wavelength of the perfectly bonded face layer can be used as an appropriate characteristic length for normalizing the debond length of a relatively long face layer. The effects of length and location of debonds and the end constraints of the face layer on the load carrying capacity are discussed. Interactive effects due to two debonds and the overlapping of debond faces are also studied. A master curve based on a classical solution is developed by employing the new normalization of the debond length. A modification to the usual Winkler foundation constants is made for an isotropic core, and it agrees very well with published ...

Sandwich panel of veneer-overlaid low-density fiberboard

Abstract: Low-density sandwich panels of veneer-overlaid fiberboards of 12 mm thickness for structural use were manufactured at densities of 0.3–0.5g/cm3 using an isocyanate compound resin adhesive and steam injection pressing method. The effects of board density, veneer thickness, and resin content on the fundamental properties of sandwich panels were examined, with the following results: (1) The dry moduli of rupture and elasticity in the parallel direction of sandwich panels with thicker veneers were superior. The dry moduli of rupture and elasticity in the parallel direction of sandwich panels with 2.0 mm thick veneer at densities of 0.4–0.5 g/cm3 were 40–60 MPa, and 5–8 GPa, which were two and four times as much as those of homogeneous fiberboards, respectively. (2) The higher-density panels exhibited tensile failure at the bottom veneer surface during static dry bending in a parallel direction, whereas lower-density panels experienced horizontal shear failure in the core. (3) The dimensional stability of sandwich panels had good dimensional stability, with negligible springback after accelerated weathering conditions. (4) The thermal insulation properties of sandwich panels were found to be much superior to other commercial structural wood composite panels.

Composite sandwich panel

Abstract: The utility model belongs to the technical field of preparing sandwich panels, and relates to a composite sandwich panel which is made of extruded polystyrene foam panels (XPS). The composite sandwich panel comprises flanging steel plates, polyurethane adhesive, an XPS and a sandwich layer, wherein multiple layers are compounded into a staggered layer which can be meshed with mutually, the flanging steel plates are arranged at two sides of the sandwich layer, thus breaking through the limit on the thickness of the sandwich panel under low-temperature condition; the sandwich layer consists of an upper XPS, a middle XPS and a lower XPS which are adhered by the polyurethane adhesive, the middle XPS of the sandwich layer and the upper XPS and the lower XPS are staggered, one side of the staggered layer is in a groove shape, and the other side is in a raised shape; the sandwich panel is made by the following steps: first selecting and manufacturing dies of components and materials; then carrying out machining and forming; and tightly adhering the machined and formed components and materials, thus forming a composite XPS sandwich panel. The composite sandwich panel has the advantages of being low in water absorption and heat conductivity coefficient, high in tensile strength, good in frost and melting resistance, good in heat insulation performance, environment-friendly in materials and the like.