在不同量測時間或撞擊點下探討不同穿線方式與磅數對羽球撞擊球拍線聲音基頻之影響

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在不同量测时间或撞击点下探讨不同穿线方式与磅数对羽球撞击球拍线声音基频之影响

Effects of the Sound Base Frequency from Badminton Hitting Racket on Different String Ways and Thread Pounds with Different Time Points or Impact Points

陈冠廷 , 硕士　　导师：刘于诠　　

繁体中文

子母线材；穿线方式；自然衰退； hybrid string ； string ways ； nature declination

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摘要 │ 参考文献 (39) │ 国际计量

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In this study, the effects of different string ways and thread pounds on the sound base frequency (SBF) when badminton sphere hitting racket string at different measuring times or impact points were tried to explore. Audacity audio software was used to analyze the SBF when badminton spheres hitting racket strings in experiment. Independent variable included different string ways (mono and hybrid string), three kinds of thread pounds (20, 24 and 28 pounds), different measuring times (the moment of threading finished, 1,3,5,7,15,24,48,72,96,120 and 168 hours after threading finished) and different impact points on racket (center, 3,6,9 and 12 o’clock point). Statistics was completed by Independent 3-way ANOVA statistical analyses. Results showed: 1. Different string ways, thread pounds, impact points and measuring times would influence SBF at the moment of threading finished, nature declination of SBF and declination of SBF when swing tests were ongoing individually and mutually. 2. For the SBF at the moment of threading finished, SBF of hybrid string was bigger than mono string when thread pounds and impact points were all identical, SBF would rise with the increasing of thread pounds when string ways and impact points were all identical, racket center’s SBF was maximum and the disparity of other four impact points’ SBF was indistinct when string ways and thread pounds were all identical. 3. For the nature declination of SBF, SBF of hybrid string was bigger than mono string when thread pounds and measuring times were all identical, SBF would rise with the increasing of thread pounds when string ways and measuring times were all identical, SBF was maximum at the moment of threading finished and then declining naturally by the proceeding of measuring when string ways and thread pounds were all identical. 4. For the declination of SBF when swing tests were ongoing, SBF of hybrid string was bigger than mono string when thread pounds and measuring times were all identical, SBF would rise with the increase of thread pounds when string ways and measuring times were all identical, SBF was maximum at the moment of 1 hour after threading finished and then declining by the proceeding of swing tests when string ways and thread pounds were all identical. 5. Nature declination curve of hybrid string’s SBF unlike mono string’s curve, mono string’s curve was to go down after threading finished for 48 hours; meanwhile, hybrid string’s curve was still declining even at the end of experiment (when threading finished for 120 hours). As for the changing of SBF after swing test, if swing test was carried out within 48 hours after threading finished, SBF would rise and down, when swing test just finished, SBF decreasing, when swing test finished for a period of time, SBF increasing again. After threading finished for 48 hours, the effect of swing test to let SBF rise again wasn’t obvious; moreover, values of SBF measured just after swing test at different measuring times were all on a similar low point.

参考文献 ( 39 ) 〈TOP〉

石世滨、相子元（1997）。网线材质张力及拍面大小对网球拍弹性恢复系数之影响。体育学报，23，189-200。
连结：
林信良、陈五洲（1999）。不同穿线磅數的羽球网线其弹性恢復系數之探讨。国立体育学院論丛，44，103-107。
连结：
邱宪祥（2007）。新修订羽球规则对羽球运动的影响分析。中华体育季刊，21（1），115-121。
连结：
相子元（1998）。有线元素法於运动器材之应用。体育学报，26，129-136。
连结：
许太彦、胡瑞文、洪文彦（2014）。不同线径、穿线磅数羽球线恢复系数与使用者满意度之研究。体育学报，47（4），517-530。
连结：

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