Applications of composite material

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Information about Applications of composite material

Published on March 9, 2014

Author: NirbheySPahwa


Applications of composite material. • ADD FROM ADOBE FILES.

Advantages of Composites A higher performance for a given weight leads to fuel savings. Excellent strength-to-weight and stiffness-to-weight ratios can be achieved by composite materials. This is usually expressed as strength divided by density and stiffness (modulus) divided by density. These are so-called "specific" strength and "specific" modulus characteristics. Laminate patterns and ply build up in a part can be tailored to give the required mechanical properties in various directions. It is easier to achieve smooth aerodynamic profiles for drag reduction. Complex double-curvature parts with a smooth surface finish can be made in one manufacturing operation. Part count is reduced. P-n junction cost is reduced. Composites may be made by a wide range of processes. Composites offer excellent resistance to corrosion, chemical attack, and outdoor weathering ; however, some chemicals are damaging to composites(e.g. ,paint stripper),and new types of paint and stripper are being developed to deal with this.

Disadvantages of Composites  Composites are more brittle than wrought metals and thus are more easily damaged.  Cast metals also tend to be brittle.  Repair introduces new problems, for the following reasons:  Materials require refrigerated transport and storage and have limited shelf lives.  Hot curing is necessary in many cases, requiring special equipment.  Curing either hot or cold takes time. The job is not finished when the last rivet has  been installed.  If rivets have been used and must be removed, this presents problems of removal without  causing further damage.  Repair at the original cure temperature requires tooling and pressure.

YOUR IDEAS ON THE COMPOSITES OF THE FUTURE? • Can we innovate more towards the expanding sector of composite material, if yes how? • How to introduce more life applications of composite material in daily scenario? • Making the idea spread to the consumer. • Potential stock market enhancement of composite industries.

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