Composite Material

A materials system composed of two or more physically distinct phases whose combination produces aggregate properties that are different from those of its constituents. The examples are cemented carbides, plastic molding compounds containing fillers, rubber mixed with carbon black and wood that is a natural composite. Composite are important nowadays because it can be very strong and stiff, yet very light in weight, so ratios of strength‑to‑weight and stiffness‑to‑weight are several times greater than steel or aluminum. Secondly, fatigue properties are generally better than for common engineering metals and its toughness is often great too. It is also can be designed that do not corrode like steel and it is possible to achieve combinations of properties not attainable with metals, ceramics, or polymers alone. Other example of the object that used composite is the aeroplane body and also bicycle frame. So, the composite material is very important nowadays.