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The present work investigates the influence of friction coefficient of the outer layer of the goalkeeper gloves on the ability to catch or punch the soccer ball. Catching and gripping soccer ball are performed by the palm of the goalkeeper gloves, while punching is touching the back of the gloves. It is important that both of palm and backhand of the glove has the same friction coefficient that displayed by sliding of the ball on the glove surface. Experiments were carried out to measure the friction coefficient displayed by the sliding of soccer ball on the palm and backhand of goalkeeper glove at different values of applied load at dry and water wet contact.
The experiments revealed that attention should be considered to the fact that the friction properties of the outer layer of the backhand of the glove should be enough high. It is recommended to increase either the backhand force or friction coefficient of the material of the backhand to guarantee good punch and saving. The glove material is not safe at higher impact force of the ball and lower friction coefficient. The difference in friction coefficient between palm and backhand should be minimized.The drastic friction decrease vanished at water wet sliding. Based on the experimental observations it can be concluded that gloves of goalkeepers should provide high efficient catching and punching. They should enable the goalkeeper to punch the ball away at dry and rainy environment. This can be done by increasing adhesion between ball and both the palm as well as the backhand of the gloves.
DOI
10.21608/jest.2019.79387
Keywords
Friction coefficient, sliding, soccer ball, goalkeeper, gloves, palm, backhand
Authors
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Department of Production engineering and Mechanical Design, Faculty of Engineering, Minia University, El-Minia, EGYPT.
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Department of Production engineering and Mechanical Design, Faculty of Engineering, Minia University, El-Minia, EGYPT.
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https://jest.journals.ekb.eg/article_79387.html
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https://jest.journals.ekb.eg/service?article_code=79387
Publication Title
Journal of the Egyptian Society of Tribology
Publication Link
https://jest.journals.ekb.eg/
MainTitle
FRICTION COEFFICIENT BETWEEN SOCCER BALL AND GOALKEEPER GLOVE