EngineeringManufacturing

Honeycomb, Foam And Laminar Composite Structures

These structures of composite materials can not be fit into conventional particle-reinforced and fiber-reinforced composite material groups. Honeycomb, foam, and laminar structures of composites are very different in structure, and here, we explain these honeycomb, foam, and laminar composite structures below.

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What Are These Composite Structures?

Laminated composite application.

Laminar Composite Structures

As you understand from its name, laminar composite structures are laminated structures of different materials or the same materials to obtain much better mechanical properties. In conventional composites, there are primary and secondary phases. But in these kinds of composite materials, there are no exact primary or secondary phases. Different materials are mechanically brought together as laminae to obtain the required mechanical characteristics.

Honeycomb composite illustration.

The laminated structure is visible by the naked eye, unlike other matrix-reinforcement composites.

Honeycomb and foam structures are the sub-groups of laminar structure composites. In foam structure, the core thick layer is produced from thermoset foams and other layers are added on both sides of the core foam layer to obtain a stiff and strong material. With this technique, very good materials are produced in terms of strength/weight ratio.

The logic of honeycomb structure is like foam structure composites in which the core of the material is produced from honeycomb-shaped materials. Layers have added both sides of honeycomb structures to obtain a sandwich shape, in which the strength-to-weight ratio is very important.

These laminar structures of composite materials are called ‘sandwich structures’ also.

Laminar Composite Examples

Snow skis are produced from composites.
  • Snow Skis: Snow skis are produced in the laminar structure that includes metal layers and phenolic plastic layers.
  • Windshield Glass: Glass layers are added to both sides of the transparent plastic sheet.
  • Fiber-reinforced Polymers: These layered fiber-reinforced materials find various applications such as boat hulls and aircraft applications.
  • Plywood Applications: Sheet structures that are produced from wood parts are bonded together to obtain a stiff structure.
  • Printed Circuit Boards: For electrical conductivity and insulation properties, layers of polymers and coppers are produced and bonded together.
  • Tires: Rubber-reinforced carbon black and rubber impregnated fabrics are combined as a laminar structure to obtain automotive tires.

Conclusion

These are the general properties and applications of laminar composite structures in engineering.

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