From DT Online
A Composite is a material created by bonding together two or more different materials to take advantage of the particular properties or characteristics of the contributing elements.
Commonly used Composites in everyday use include:
|Plywood||Plywood, together with other Manufactured Boards, exploits the strength of wood along its Grain by gluing together thin layers (i.e. Veneers) at an angle to each other to create a material which has strength in all directions. In addition, the appearance of Manufactured Board composite materials can be enhanced by adding a further Lamination of plastics or a more exotic hardwood Veneer for example.|
|Glass reinforced Plastics (GRP)||Commonly known as 'fibreglass', GRP is made by reinforcing a resin matrix with fibres. Typically, polyester or epoxy resin is reinforced with glass strands or carbon fibre but other combinations are possible.|
|Concrete||Concrete has been used since the time of Ancient Rome and, at its simplest, comprises a stone aggregate suspended within a Portland Cement matrix. Concrete can be strengthened further by adding steel reinforcement known as Rebar and Weldmesh - or even Textiles. Prestressed Concrete uses pre-tensioned steel rods or wires to improve load bearing.|
|Overhead power lines||These are seen suspended between pylons transmitting electricity across the country. Aluminium is used as the main conductor and wrapped around a core material chosen to provide greater tensile strength to avoid excessive sag between pylons. Most commonly a steel core is used but more modern cables may have carbon and glass fibre reinforcement.|
|Sheffield Plate||consists off a thin layer of silver fused on to one or both sides of a copper or nickel silver core. It was discovered accidentally in the mid-eighteenth century and used for about 100 years until superseded by electro-plating which was developed in the mid-nineteenth century.|