Sandwich-structured composite

Composite sandwich structure panel used for testing at NASA

A Sandwich structured composite is a special class of composite materials that is fabricated by attaching two thin but stiff skins to a lightweight but thick core. The core material is normally low strength material, but its higher thickness provides the sandwich composite with high bending stiffness with overall low density.

Diagram of an assembled composite sandwich (A), and its constituent face sheets or skins (B) and honeycomb core (C) (alternately: foam core)

Open and closed cell structured foam, balsa wood and syntactic foam, and composite honeycomb are commonly used core materials. Glass or carbon fiber reinforced laminates are widely used as skin materials. Sheet metal is also used as skin materials in some cases.

Recycled paper is also now being used over a closed-cell recycled kraft honeycomb core, creating a lightweight, strong and fully repulpable composite board. This material is being used for applications including point-of-purchase displays, bulkheads, recyclable office furniture, exhibition stands and wall dividers.

$<math>Insertformulahere$$<math>Insertformulahere$$Insertformulahere$</math></math>== Calculating Deflection in a Sandwich Structured Composite ==

See the following:

DIAB SANDWICH HANDBOOK ^[1]

HexWeb^TM HONEYCOMB SANDWICH DESIGN TECHNOLOGY^[2]

See also

• Honeycomb Structures