Sandwich panel

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

Mechanical behavior of resin pin-reinforced composite sandwich panels under quasi-static indentation and three-point bending loading conditions:

Abstract: This paper reports the mechanical behavior of resin pin-reinforced composite sandwich panels made from polyvinyl chloride core and glass/epoxy face sheets under indentation of a hemispherical inden...

Higher-Order Buckling of Debonded (Delaminated ) Sandwich Panels with Soft Core

Abstract: Buckling behavior of sandwich panels with a transversely e exible core that are debonded at one of their face sheet‐core interfaces is presented. The analytical model allows for a general cone guration of the sandwich panel and nonrigid bond layers between the face sheets and core. The governing equations with the associated boundary and continuity conditions are derived through the variational principle of virtual work. Buckling response of the panels with inner and edge debondings (delaminations ) is studied numerically. The effects of length and location of the delamination, face sheet rigidities, boundary conditions, and existence or inexistence of contact on the critical loads and buckling modes are presented. A comparison with experimental buckling modes is discussed, and conclusions are drawn.

Light-Weighting in Transportation and Defence Using Aluminium Foam Sandwich Structures

Abstract: We review the status of Aluminium Foam Sandwich (AFS) technology and discuss both recent improvements of foaming technology and current applications. It is concluded that the quality of foams has improved in the past years and costs are slowly decreasing. This is why applications in which metal foams have more than one function are more likely to be economically viable. The examples presented here include battery cases for electric cars, crash absorbers, high-speed train front heads and blast protectors for vehicles and tanks.

Sandwich panel core

Abstract: A core having a repetitive pattern for ribbing comprising triangles and hexagons where each side of any given hexagon is extended pinwheel fashion toward the appropriate side extensions of each of the six adjoining hexagons, all of the hexagons having sides extending to form pinwheels having the same sense, i.e., clockwise or counterclockwise. The triangles are defined by the extensions and are located between the hexagons. Panels using this core are stiff about all axes and do not have an angle of inherent weakness. The core may be stamped, rolled or vacuum-formed out of many materials including paper, cardboard, sheets of various metals and reinforced or thermosetting plastic.

Fatigue behavior of wood-fiber-based tri-axial engineered sandwich composite panels (ESCP)

Abstract: Abstract The static and fatigue bending behavior of wood-fiber-based tri-axial engineered sandwich composite panels (ESCP) has been investigated by four-point bending tests. Fatigue panels and weakened panels (wESCP) with an initial interface defect were manufactured for the fatigue tests. Stress σ vs. number of cycles curves (S-N) were recorded under the different stress levels. The primary failure mode in the fatigue tests was observed in the shear zone (epoxy debonding), which was different from face failure in the pure bending zone for the static bending test. For residual bending (RB) test, epoxy debonding failure occurred between the pure bending zone and shear zone. Macro cracks along the core/face interface developed as the number of cycles increased during the fatigue life. The crack propagation or damage for the panels submitted to fatigue test can be described as a three-stage damage process of first non-linear portion, followed by linear damage accumulation, and lastly non-linear accelerated damage. Bending stiffness degradation at the higher load level had faster degradation during fatigue life. The dissipated energy of the panels was small due to the high stiffness of the materials.