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The composite material,as implied by the name, is a combination of two or more materials. Generally speaking, it is constituted by a base material (matrix) and a reinforcement material (reinforcements).
The base material is a continuous material, the reinforcing material is discontinuous one wherein materials. Composite materials are in wide variety, the most widely used fiber reinforced composites also known as fiber-reinforced plastic (FRP). The polymer is generally divided into two categories, thermoplastic plastic (Thermoplastic) and thermosetting plastics (thermoset). The fibers have different materials and forms, often used items are as glass fiber, carbon fiber, Kevlar fiber, boron fiber ...