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Aramid fibers are generally fabricated from aromatic polyamides which are long polymeric chains and aromatic rings. They consist of rings of six carbon atoms bonded to each other. These fibers have high tensile strength, high modulus and low weight and so they find excellent use in reinforcement of automobile tires, fabrication of bullet proof vests and power boats. The density of aramid fibers is less than that of glass and graphite fibers, therefore high impact-resistant structures can be produced from them [13]. They are fire and high-temperature resistant and remain unaffected by organic solvents fuels. They can be easily woven into matrices through simple processes. The coefficient of thermal expansion of aramid fibers is negative in the fiber direction which protects it from failure.