CRAA FINAL - CARBON FIBER Emilia Mocarski I....

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CARBON FIBER Emilia Mocarski I. Introduction/Applications Carbon fiber dates back to the 1960s when it was first realized that it could strengthen and stiffen structural products. Thomas Edison first used carbon fiber as material for the filament in his early light bulb. Carbon fiber is a composite material; a composite is formed when two or more materials are combined to yield a better result than would be if just the individual materials were used. There are two main categories of the application of carbon fiber: specialized technology, which includes aerospace and nuclear engineering, and general engineering and transportation. Each characteristic of carbon fiber lends itself to a different application. The physical strength and toughness of carbon fiber is applied in transportation and sporting goods, while the good vibration damping is made use of in audio equipment, as seen in Table 1 [1]. Table 1: Characteristics and applications of carbon fiber [1]. One of the most common applications of carbon fiber is as a reinforcement for other materials. These materials are usually known as carbon fiber reinforced polymers [2]. New applications of carbon fiber are currently being developed. One of these areas is in protective clothing and using carbon fiber as a flame retardant. 1. Physical strength, specific toughness, light weight Aerospace, road and marine transport, sporting goods 2. High dimensional stability, low coefficient of thermal expansion, and low abrasion Missiles, aircraft brakes, aerospace antenna and support structure, large telescopes, optical benches, waveguides for stable high- frequency (GHz) precision measurement frames 3. Good vibration damping, strength, and toughness Audio equipment, loudspeakers for Hi-fi equipment, pickup arms, robot arms 4. Electrical conductivity Automobile hoods, novel tooling, casings and bases for electronic equipments, EMI and RF shielding, brushes 5. Biological inertness and x-ray permeability Medical applications in prostheses, surgery and x-ray equipment, implants, tendon/ligament repair 6. Fatigue resistance, self-lubrication, high damping Textile machinery, genera engineering 7. Chemical inertness, high corrosion resistance Chemical industry; nuclear field; valves, seals, and pump components in process plants 8. Electromagnetic properties Large generator retaining rings, radiological equipment
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Due to carbon fiber’s high specific tensile strength and specific modulus, many sporting goods manufacturers choose to use it as a basic material in many products. Tensile strength is the stress required to cause a material to fail. These products include fishing rods and reels, tennis and
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CRAA FINAL - CARBON FIBER Emilia Mocarski I....

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