압축강도, 반발계수가 다른 골프공의 성능비교시험 (Comparative Test on Performance of Golf Ball with Different Coefficient of Restitution and Ball Compression)

서지정보

· 발행기관 : 한국체육과학회
· 수록지 정보 : 한국체육과학회지 / 27권 / 4호 / 1049 ~ 1057페이지
· 저자명 : 김광혁, 최재원, 강인철, 한재길

초록

The purpose of the study is to provide objective data on the performance of golf balls by comparing ball compression and coefficient of restitution(COR) using seven types of products. Seven types of golf balls weighed 45.442 to 45.711 g, while the outside diameter was measured at 42.703 to 42.773 mm, with a distribution of 0.59 % in weight and 0.16 % in diameter. As a result of measuring the outer diameter of a golf ball by increasing the compression load from 200 lb to 300 Ibrahim, the four-piece golf ball was altered by 0.600 mm and the three-piece golf ball was changed by 0.638 to 0.820 mm.
The coefficient of restitution(COR) of golf balls tends to decrease to 0.852, 0.846 and 0.801 as the ball speed of firing was increased to 80, 85 and 125 mph. After measuring the deformation of a golf ball with a high-speed camera, the deformation of the ball was not related to coefficient of restitution and increased in cases of large changes in compressive strength. The results of the seven types of golf swing robot tests showed a ball speed of 2.3 mph, a total distance of 6.023 m, and a standard deviation of 1.4 % and 2.2 %. The difference in ball rotation was 361 rpm, which resulted in a relatively large standard deviation of about 14 %.

영어초록

The purpose of the study is to provide objective data on the performance of golf balls by comparing ball compression and coefficient of restitution(COR) using seven types of products. Seven types of golf balls weighed 45.442 to 45.711 g, while the outside diameter was measured at 42.703 to 42.773 mm, with a distribution of 0.59 % in weight and 0.16 % in diameter. As a result of measuring the outer diameter of a golf ball by increasing the compression load from 200 lb to 300 Ibrahim, the four-piece golf ball was altered by 0.600 mm and the three-piece golf ball was changed by 0.638 to 0.820 mm.
The coefficient of restitution(COR) of golf balls tends to decrease to 0.852, 0.846 and 0.801 as the ball speed of firing was increased to 80, 85 and 125 mph. After measuring the deformation of a golf ball with a high-speed camera, the deformation of the ball was not related to coefficient of restitution and increased in cases of large changes in compressive strength. The results of the seven types of golf swing robot tests showed a ball speed of 2.3 mph, a total distance of 6.023 m, and a standard deviation of 1.4 % and 2.2 %. The difference in ball rotation was 361 rpm, which resulted in a relatively large standard deviation of about 14 %.

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