Aramid Reinforced Polymer Composites Case Study

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1. The choice of materials and reason.  Dispersed phase: 1. Carbon fiber reinforced polymer composites (CFRPs) 2. Aramid reinforced polymer composites (ARPCs) 3. Glass fiber reinforcement composites (GFRs) **In each case the fiber is encased in a resin matrix (the continuous phase). **These matrices are usually acrylicepoxyphenolic or polyester resins. Reason for the selection: Because carbon fiber is light and able to increase the strength of the tennis rackets. Reinforcement had impact resistance, stiffness and tensile properties. It improves fatigue life and corrosion resistance.  Matrix phase: The first of these composite materials consisted of glass fibers held within a polyester resin matrix, and later rackets went on to encompass…show more content…
How to test the quality of the parts manufactured. The important properties/ parameter of tennis racket to be examined are tensile strength, stiffness and pattern density.  The head size of the tennis rackets provides the desired power. A larger head provides more power (longer head) or a better control (wider head).  The beam size (racket 's cross section) influences the racket 's stiffness and power.  Most modern racket frames are made from light-weight graphite or graphite composites allowing good frame flexibility, more power or more control, depending on the shots.  Other important aspect refers to how racket’s weight and its distribution affect balance and control. A. String testing – tensile testing - Tests are performed to measure tensile strength, elongation at break, knot strength and elongation percentage at given loads. The instrument is fitted with a 2kN horn grip. - Elongation is measured at 45kg force to replicate the ball hitting the strings. - Knot strength is measured because if this is too low, the string will break. - Full testing is carried out at regular intervals during processing (1 in 500 samples) plus product is randomly selected for further analysis. Future tests will include a load then relaxation cycle to allow tension loss over time to be…show more content…
(2017). YouTube. Retrieved 26 November 2017, from Stringing a racquet on the Klippermate Racquet Stringing Machine. (2017). YouTube. Retrieved 26 November 2017, from Lichtarowicz, M. (2013, March 18). Composites. Retrieved from (2001, March 26). Advanced Materials take on Tennis. Retrieved from (2013, July 19). Synthesis, Testing of Nylon 6,6/Multi-wall Carbon Nanotube and Modeling, Analysis of Tennis Racket Frame and String. Retrieved from (2016, June 2). High resolution imaging of impacted CFRP composites with a fiber-optic laser-ultrasound scanner. Retrieved from (2002, August 7). Tennis Racket - Materials, Design, Evolution and Testing. Retrieved from Ltd., L. (2017). Materials Testing - Advances in String Technology in Sporting Equipment Materials. Retrieved 23 November 2017, from

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