Reinforcement With Particles And Flakes In Composite Materials
These structures of composite materials can not be fit into conventional particule-reinforced and fiber-reinforced composite material groups. Honeycomb, foam and laminar structures of composites are very different in structure, and in here, we explain these honeycomb, foam and laminar composite structures below.
As you understand from its name, laminar composite structures are laminated structures of different materials or same materials to obtain much more better mechanical properties. In conventional composites, there are primary and secondary phases. But in this kinds of composite materials, there is no exact primary or secondary phases. Different materials mechanically brought together as laminae to ibtain required mechanical characteristics.
The laminated structure is visible by naked eye unlike other matrix-reinforcement composites.
Actually honeycomb and foam structures are the sub-groups of laminar structure composites. In foam structure, the core thich layer is produced from thermoset foams and other layers are added both side of 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 material is produced from honeycomb shaped materials. Layers are added both sides of honeycomb structures to obtain a sandwhich shape, in which strength-to-weigth ratio is very important.
These laminar structures of composite materials are called as ‘sandwhich structures’ also.
These are the general propreties and applications of laminar composite structures in engineering.
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