1.0 Introduction
A golf ball is a spherical ball with dimples on surface that specially designed to be used in a game of “golf”. The currently used material for the core body is rubber. Polybutediene rubber is synthetic rubber which is tough but elastic like the tires’ properties, this explains why most of the ball speed is due to the rubber core properties.
The inner cover of golf ball is usually made up of surlyn, but sometime surlyn also made up the outer cover of golf ball. Surlyn is an ionomer materials which is less expensive, soft, excellent resilience and resistant to cut and abrasion. Balata, a type of natural rubber is sometime used to construct the inner cover layer. Balata is less cut resistant, low spin rate.
The outer cover of golf ball is made up of thermoplastic polyeurethane, thermoplastic polyeurethane is a kind of urethane, the toughness and hardness can be controlled easily. Thermoplastic get soft when heated up thus allow more precision and design flexibility. Sometime, Srixon (a kind of urethane) is used as it is softer for more spin without sacrificing durability. Besides that, it is resistant to abrasion, cutting, tearing with easily controlled toughness and hardness.
The surfaces of golf ball were not smooth; there are many dimples on its surface. The function of dimples is to reduce air resistant and enhance the flight length of golf ball. Dimples will affect lift of golf ball, the spinning action of golf ball after hitting will create higher air pressure on the bottom of the ball than the air pressure on the top; this imbalance in bottom and top pressure causes an upward force on the ball, the ball move upwards and further, dimples help to optimize the lift forc...
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...&A) and the United States Golf Association (USGA). Both of the bodies had specified the maximum weight of golf ball is 45.9 g but the specifications of the golf ball’s diameter for both bodies are different; which are as follow:
Minimum diameter is 41.15 mm for R&A;
Minimum diameter is 42.67mm for USGA
1.2 Objective
1.2.1 To study the possible materials for manufacture a golf ball.
1.2.2 To maximize the weight of golf ball with minimal size allowable by R&A and USGA.
1.3 Scope of study
1.3.1 The types of golf ball: Three-piece golf ball
1.3.2 The materials used to produce the golf ball are :
Core - Polybutediene rubber;
Inner cover - Surlyn;
Outer cover – Thermoplastic polyeurethane; and
Dimple pattern- hexagonal-based dimple pattern.
1.3.3 The methods used to manufacture golf ball: Forming, polishing, painting, coating, refinishing, drying and packing.
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... for a clue as to where the ball will be hit. 'I think you're right,
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