It has long been known that by separating two materials with a lightweight material in between it will increase the structure’s stiffness and strength at very low weight and cost.

This distinction, along with many other drivers such as the environmental benefits, extreme cost savings, and freedom of design, are causing sandwich to become more and more popular in structural design.

One of the most driving reasons to use sandwich is that the concept enables lightweight construction.

Obviously, anything that moves consumes energy, and the heavier it is, the more energy consumed. Since using sandwich makes structural designs lighter, sandwich solutions are extremely environmentally friendly. With a sandwich solution, less material is consumed in the construction, thus saving resources as well as weight in the final construction, making the construction less energy consuming over its lifetime.

Sandwich-structured composites are a special class of composite materials with the typical features of low weight, high stiffness, and high strength. Sandwich is fabricated by attaching two thin, strong, and stiff skins, laminates to a lightweight and relatively thick core.