Proceedings of the International conference on Applied Research in Engineering,Science and Technology
Year: 2018 | Page No:152-161
Studying the Interrelation of the Physical and Mechanical Properties of Artificial Grass Composites Affecting its Performance
Magdi El-Messiry, Samar Abdelatif, Rania El-Deeb and Sherine El-Tarahony
In this paper, the advantages of using the artificial grass composites instead of the natural grass are going to be discussed. FIFA sets down the rules of the game which cover the ball’s weight, material, circumference, sphericity, pressure and also, the use of the artificial grass composites. Artificial grass composites were introduced as an alternative to natural turf in an attempt to overcome some issues such as shortage of water, increased participation in sports and high operational and maintenance costs. Hence, it is important to know the regulations and the quality controls of the ball that can be used in the game. This can be done by developing a theoretical approach describing the behavior of the artificial grass, developing the parameters recommendation catalog and designing the football end-use artificial grass according to FIFA regulations.
In this work, the physical and mechanical properties of various artificial grass carpets with different pile heights, raw materials, thickness, pile count, and density are investigated. A tester to measure the vertical ball rebound height, oblique ball rebound height and the coefficient of restitution (COR) are introduced. In addition, a tester to measure the residual impact force (RIF) of the ball is proposed. Taking into consideration the reaction of the standard football on the surface of the artificial grass composites (Ball / Surface interaction) with the different specifications of the grass, a theoretical model describing the artificial grass behavior as a function of the artificial grass different parameters is developed. This model can be used to design the artificial grass combination parameters that are compliant with FIFA recommendation regulations (FIFA 1* and FIFA 2*). In addition, further improvement can be done by studying more parameters that affect the artificial grass design and behavior such as ball roll, joint strength, underfoot friction, abrasion resistance, and grass permeability. A similar line of work can be applied to different end-uses such as landscaping, golf, and rugby.
Keywords: Artificial grass, Ball rebound height, Coefficient of restitution (COR), Residual impact force (RIF), FIFA 1*/ 2*.