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Purpose: The study aims to investigate the difference of coefficient of restitution, vibration, and players’ perception in accordance with three different badminton rackets made from multilayer graphene, hybrid composite and carbon fiber respectively.Methods: The multi-analyte testing includes badminton rackets made from multilayer graphene and hybrid composite which are categorized as nanomaterials, as well as the ones made from carbon fiber. The phenomena of coefficient of restitution and vibration are recorded with a badminton shuttlecock machine launching the shuttle at a constant speed of 135km/h; simultaneously, the badminton rackets are attached to a high pedestal. With the help of the Silicon COACH motion analysis software, a dynamic impact analysis of shuttlecocks hitting the stringed area is proceeded. By means of the single-blind method, 30 overhand strokes are executed, and then, players’ functional assessment scales will be filled in. The statistical technique, One-Way Analysis of Variances (ANOVA) with dependent samples, is adopted to compare the differences of coefficient of restitution and vibration from three different badminton rackets made from multilayer graphene, hybrid composite and carbon fiber; moreover, the differences of players’ perception is shown on a statistical chart. The statistical standard was set to be α=.05.Results: The coefficient of restitution of three badminton rackets made from multilayer graphene, hybrid composite and carbon fiber is 0.88±0.11, 0.79±0.10 and 0.71±0.08 respectively; the coefficient of vibration is 2.10±0.02, 2.21±0.04 and 2.33±0.04. With regard to the coefficient of restitution and vibration, multilayer graphene and the other two materials make highly significant difference, that is, the p-value is less than .05.Conclusion: In terms of the coefficient of restitution, vibration and players’ perception, badminton rackets made from multilayer graphene surpass the ones made from hybrid composite and carbon fiber, making multilayer graphene badminton rackets ideal for players. |