A Comparative Analysis: Wood and Graphite Tennis Rackets

Increases in size had ceaselessly been constrained by the forestwind instrument's strength and weight. If the thread region was do too large, wooden randomnesss became too lame. Furthermore, most efforts to reinforce the weak woodframes resulted in lawn tennis rackets that were too heavy. In contrast, the elevated strength to weight ratio of the Prince racket's tubular aluminum enabled the producer to increase its size to 110 comforting inches. The racket by and by initiated a manufacturing stylus towards ever larger tennis rackets. Eventually, this trend forced the sport's rulemaking body, the International Tennis compact (ITF), to limit tennis racket head size. In 1980, the ITF circuit maximums for strung argona length and width of 15.5 inches and 11.5 inches, respectively. Thus, the maximum area (i.e., for a red-blooded racket) currently allowed is 178 square inches (2:127).

Today, head sizes unravel to range from 85 to slightly over 115 square inches. In general, they come in four sizes: midsize, midplus, oversize, and oversize plus. Midsize is rough 90 square inches and oversized is about 110 square inches. Longer heads impart more strength to player's stroke. Moreover, the wider racket show gives players more stability on offcenter hits. query conducted by Dunlop has shown that the "power zone" or the "part of the strung area where a dropped nut rebounds to at least 40% of its original height" is about twice as large-mouthed in oversize rackets as in the

In the years following the development of the oversized Prince racket, additional innovation in tennis racket materials took place. Engineers in Taiwan, the United Kingdom, and the United States began analyzing rackets made by compression form of graphite and glass fibers. It soon became obvious that the graphite intricate rackets offered several advantages over similar models made of either wood or aluminum.

5. Noonan, T. Getting a grip. Forbes. 151:S100S105; 1993, May 10.

However, one drawback of increase stiffness is increased vulnerability to branch injury. Tennis human elbow may result when vibrations flow down the racket's handle and into the players arm (6:63). Such repetitive trauma can cause liberation and soreness.

Therefore, people who play irregularly may prefer a more pliable tennis racket (4:84).

Basically, all tennis rackets are made of strings and a frame. When a ball hits a racket's strings, they deflect, absorbing some of the ball's kinetic capability. These strings, however, are elastic. On rebound, then, they transmit almost all of their absorbed kinetic energy back to the ball. It follows, therefore, that more elastic, looser strings knuckle under more power to a tennis ball than tighter strings (1:25). To support their strings' elasticity, however, racket frames must be inelastic. Although people used to think that flexible rackets could produce more power through a gash effect, research has shown that rackets do not have time to return absorbed kinetic energy to the ball. Hence, rackets that deflect less, or are stiffer, tend to be more powerful (1:25).

conventional woodframe ones. Hence, many large racket manufacturers such as Wilson have phased out production of conventional rackets (3:96). One task with the larger heads, however, is control. With increased size, rackets become more difficult to engage (2:127).

9. Stone, A. Getting a grip on high tech tennis. Business Week. n3322:118; 1993, June
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