The Proceedings of the Symposium on sports and human dynamics
Online ISSN : 2432-9509
2018
Session ID : C-7
Conference information

A Study on Restitution Characteristics of Rubber Sheet for Table Tennis
*Shinobu SAKAIDaisuke YASUTOMIHirotaka SAIKI
Author information
CONFERENCE PROCEEDINGS FREE ACCESS

Details
Abstract

In table tennis games, players receive the ball served from the opponent and return it to the opponent's table by striking the bounced ball using a racket with two rubber sheets. The ball speed and spin influence the flight trajectory of the ball notably, which is related to the game scores. Since that the diameter of the ball adopted in the table tennis games was changed from 38 mm to 40 mm in 2000, the difference of the receiving performance with respect to the ball diameter has been studied by some researchers. However, there are only a few works focusing on the performance evaluation of the rubber sheets on the table tennis rackets. In this study, in order to evaluate the rebound performance of the rubber sheets, ball speed and spin rate are measured according to the collision experiments using the four-roller table tennis launching machine. Then, the performance of four kinds of rubber sheets according to the catalogue specifications made by two companies are investigated and compared. We perform the collision experiments with ball speed from 20 to 70 km/h and spin rate from 0 to 4300 rpm by adjusting the launching machine. From the experiment results, we find that the coefficients of restitution in all rubber sheets decrease as the launching ball speed increase. Also, the coefficient of restitution is also influenced by the racket angle (i.e., incidence angle). Among the four kinds of rubber sheets, the ball speed and spin rate in two kinds of rubber sheets have the same rebound performance values, whereas the other two kinds of rubber sheets are different from those in the catalogue.

Content from these authors
© 2018 The Japan Society of Mechanical Engineers
Previous article Next article
feedback
Top