Composite baseball bats, opposed to aluminum or wood baseball bats, incorporate a reinforced carbon fiber polymer, or composite, into the bat's construction. This composite material can make up all or part of the bat. Bats made entirely of this polymer are referred to as composite bats. Bats which only incorporate a portion of polymer (and the rest either wood or an aluminum alloy) are referred to as composite hybrids.
Composite bats can also be constructed to improve their trampoline effect over time. That advantage, namely the improved trampoline effect over a break in period, put the use of composite bats under further NCAA scrutiny during the 2009 NCAA Division I baseball tournament. Composite bats, tested after they were already broke in, showed performance standards well beyond the accepted ball exit speed ratio (BESR) Test. [1]
As a result, a new standard, known as the batted-ball coefficient of restitution (BBCOR), was put in place in 2011 which required an accelerated break in period and testing to measure the trampoline effect of composite bats. [2] Since the new restrictions on composite baseball bats NCAA hitting production has been noticeably dampened. [3]
Composite bats have been around as early as the 1980s for use in slow-pitch softball. Most notably, Louisville Slugger developed a slow-pitch bat that was awarded best performance at the 2001 Bat Wars. Mike responded in 2002 by developing their own composite softball bat. [4] Even though composite material has only been historically used in slow-pitch and softball, this technology has emerged in little league, high school and collegiate baseball as early as 2000. Baum Bat invented the 1st composite wood bat in 1991 with partnership with Major League Baseball.
The design of a composite bat depends on which league it is suitable for play. Composite bats are used in a number of different leagues. Most Little League programs have governing rules concerning composite bats. [5] High school (NFHS) and Collegiate play are governed under the BBCOR [2] standards. Metal or composite bats are not allowed in the MLB or its affiliates. MLB or affiliates for short season and rookie ball does allow a select few composite wood bats. An example of MLB approved composite wood bat would be the Baum Bat.
To be suitable for play in BBCOR leagues (NCAA, NFHS, etc.), for example, composite bats must meet certain requirements. Many of these requirements are the same as their aluminum or wood counterparts. For example, the bat's weight to length ratio, known as the drop (weight in ounces - length in inches), must equal negative three. Meaning, a bat with a 33-inch length must weigh 30 ounces. Further, no bat's barrel diameter, at any point, can be greater than 2 5/8 inches. For composite bats there is added scrutiny. Specifically, the rebound rate or trampoline effect, after an accelerated break in period, must stay under certain requirements. [2]
Little League International has a different standard for composite bat allowance in its leagues. Composite bats must meet an accelerated break standard set by the USA Baseball organization and be stamped with an official USA Baseball logo. [6] Other bat dimensions are akin to wood and aluminum alloy requirements (length, barrel diameter, etc.).
When it comes to a bat's performance there are very few disadvantages in the use of a composite bat. The most notable concern is the use in cold temperatures. The polymers used in composite bats can be susceptible to cracking if used in cold temperatures.
Player safety is another matter altogether. In December 2010, Little League Baseball announced a moratorium on the use of composite bats due to concerns about safety of young players. The increased batted ball speed from bats designed with composite materials introduced increased risk to fielders and especially to the pitcher. For a few years, Little League independently tested composite bats and published a list of approved bats. Starting in 2018, Little League, along with most other youth baseball leagues, have switched to the USABat standard, which is like BBCOR for lighter weight bats, keeps the trampoline effect under what Little League Baseball considers a safe level. [7] Some youth baseball leagues have not adopted the USABat standard, staying with the older USSSA BPF 1.15 standard which is more akin to the old high school BESR standard, and allow bats with considerably higher trampoline effects.
There are many advantages to using composite baseball bats. As has been chronicled in slow-pitch softball recently, composite bats have outperformed standard aluminum bats. [8] There are five main advantages for using composite bats: swing weight, trampoline effect, bending stiffness, bending vibrations, and sound. [4]
The swing weight of a baseball bat deals with how heavy the bat "feels" when swinging. The swing weight is measured around a certain pivot point along the bat. Once a pivot point is determined (usually 6 inches for baseball bats) the bats balance point, total weight and the amount of time it takes for the bat to swing from side to side like a pendulum are used to determine its 'swing weight', or as some refer to it, its mass moment of inertia.
Bat manufacturers can adjust a composite bat's swing weight by changing how the weight is distributed along the bat. Composite bats can control their swing weight (through weight distribution) more effectively than aluminum and wood since composite material is lighter and more easily manipulated. [4]
The trampoline effect, which is common terminology for baseball players, is the phenomenon when the baseball "jumps" off the bat at contact. The bat-ball collision can be demonstrated from the physics of elastic collisions. The stiffer the barrel of the bat, the slower the baseball comes off the bat because it loses energy in the collision. The softer the barrel of the bat, the faster the baseball comes off the bat because it retains its energy applied by the pitcher. The trampoline effect has been experimentally tested, and results show that composite bats outperform all-aluminum bats. [4] The reason why composite bats outperform other aluminum bats is that the trampoline effect can essentially be "tuned." Composite materials have properties that are different in all directions, or anisotropy, [9] which allows the bat manufacturer to design the bat stiff longitudinally (along the handle) and softer circumferentially (around the barrel). This softer barrel allows the ball to come off with less energy loss while maintaining the stiffness of the bat in the handle. [4]
Ball players often experience a "sting" [2] in their hands caused by vibrations when the ball does not come in contact with the sweet spot of the bat. The frequency of these vibrations throughout the bat is related to the bending stiffness. Daniel A. Russell of Kettering University has shown that standard aluminum bats have a high bending stiffness that produces vibrational frequencies in the range where most hands are sensitive; therefore, causing more sting. He also has shown that composite materials can lower this bending stiffness without compromising other advantages. [4]
Including the lower bending stiffness, composite baseball bats have a higher damping rate. The damping rate corresponds to how quickly the material lessens the vibrations it is experiencing. Russell also states that composite bats have a damping rate anywhere from 2 to 10 times more than standard aluminum bat. [4] Many ball players therefore refer to composite bats as more forgiving because if they do not make contact with the ball on the sweet spot, they will not feel the vibrations (sting) from the missed hit. [2]
For a time, the future of composite baseball bats at the collegiate level was in question. On July 22, 2009, the NCAA reported that the rules committee had requested to ban the use of composite bats. The NCAA Playing Rules Oversight Panel found that 20 out of the 25 composite bats tested during the 2009 NCAA Division 1 Baseball Tournament failed the BESR (Ball Exit Speed Ratio) test. The tests showed that the balls were actually coming off the bat much quicker than what the specifications allowed. Since bats must pass the BESR specification at the factory before reaching the market, there are two possible hypotheses. One suggests that the performance of composite bats increases with repeated use; the other states that players are intentionally altering the composite bat. [1] The most common method of altering composite bats is through bat rolling, where a large amount of pressure is applied, by various means, while rolling the bat back and forth. [10] The rules committee met on August 17, 2009, to discuss their proposal with manufacturers, and on August 24, the NCAA Playing Rules Oversight Panel approved a temporary ban on composite bats. During this temporary ban, the rules committee will continue testing the bats to determine if the performance is enhanced through repetitive use, or if intentional alteration seems more plausible. [11] Currently, the NCAA is requiring that all composite bats meet BBCOR standards. See the Design section above for details.
On December 30, 2010, Little League officials announced a moratorium on using the bats in all divisions and during the Little League World Series. [12] [13] Several manufacturers of composite bats have subsequently obtained Little League International approval for specific composite bats.
On January 1, 2018, USA Baseball adopted a new bat standard. For Little League, Pony, Cal Ripken, Babe Ruth, Dixie, and AABC, new 2018 bats must be approved and showing a 2018 USA Bat Stamp. 2 5/8 barrel diameter is now available for play but parents should expect their kids' youth bats to perform at "wood-like levels", and is similar to BBCOR for lighter weight bats. USA Baseball has repeatedly stated that the USA Bat Standard is for the betterment of the sport because it will uphold the “long term integrity of the game” with injuries and financial profits not playing a role in the decision. [14] Some leagues and tournament continue to allow the older USSSA 1.15 BPF bats which have considerably higher trampoline effect and are more similar to the old OWEN bats no longer allowed in high school and NCAA.
A racket or racquet is a sporting equipment used to strike a ball or shuttlecock back-and-forth in games such as tennis, badminton, squash, racquetball and padel. The typical basic structure of a racket consists of a widened distal end known as the head, an elongated handle known as the grip, and a reinforced connection between the head and handle known as the throat or heart.
Softball is a sport similar to baseball, and it is played with a larger ball on a smaller field and with only underhand pitches permitted. Softball is played competitively at club levels, the college level, and the professional level. The game was first created in 1887 in Chicago by George Hancock.
In baseball, a corked bat is a specially modified baseball bat that has been filled with cork or other lighter, less dense substances to make the bat lighter. A lighter bat gives a hitter a quicker swing and may improve the hitter's timing. Despite popular belief that corking a bat creates a "trampoline effect" causing a batted ball to travel farther, physics researchers have shown that this is not the case. In Major League Baseball, modifying a bat with foreign substances and using it in play is illegal and subject to ejection and further punishment.
Little League Baseball and Softball is a 501(c)(3) nonprofit organization based in South Williamsport, Pennsylvania, United States, that organizes local youth baseball and softball leagues throughout the United States and the rest of the world.
A baseball bat is a smooth wooden or metal club used in the sport of baseball to hit the ball after it is thrown by the pitcher. By regulation it may be no more than 2.75 inches (7.0 cm) in diameter at the thickest part and no more than 42 inches (1.067 m) in length. Although historically bats approaching 3 pounds (1.4 kg) were swung, today bats of 33 ounces (0.94 kg) are common, topping out at 34 to 36 ounces.
A golf club is a club used to hit a golf ball in a game of golf. Each club is composed of a shaft with a grip and a club head. Woods are mainly used for long-distance fairway or tee shots; irons, the most versatile class, are used for a variety of shots; hybrids that combine design elements of woods and irons are becoming increasingly popular; putters are used mainly on the green to roll the ball into the hole. A set of clubs is limited by the rules of golf to a maximum of 14 golf clubs, and while there are traditional combinations sold at retail as matched sets, players are free to use any combination of legal clubs.
Throughout the history of baseball, the rules have frequently changed as the game continues to evolve. A few common rules most professional leagues have in common is that four balls is a base on balls, three strikes is a strikeout, and three outs end a half-inning.
In baseball, batting is the act of facing the opposing pitcher and trying to produce offense for one's team. A batter or hitter is a person whose turn it is to face the pitcher. The three main goals of batters are to become a baserunner, to drive runners home or to advance runners along the bases for others to drive home, but the techniques and strategies they use to do so vary. Hitting uses a motion that is virtually unique to baseball and its fellow bat-and-ball sports, one that is rarely used in other sports. Hitting is unique because it involves rotating in the horizontal plane of movement, unlike most sports movements which occur in the vertical plane.
College baseball is baseball that is played on the intercollegiate level at institutions of higher education. In the United States, college baseball is sanctioned mainly by the National Collegiate Athletic Association (NCAA); in Japan, it is governed by the All Japan University Baseball Federation (JUBF).
Collegiate summer baseball leagues are amateur baseball leagues in the United States and Canada featuring players who have attended at least one year of college and have at least one year of athletic eligibility remaining. Generally, they operate from early June to early August. In contrast to college baseball, which allow aluminum or other composite baseball bats, players in these leagues use only wooden bats, hence the common nickname of these leagues as "wood-bat leagues". Collegiate summer leagues allow college baseball players the ability to compete using professional rules and equipment, giving them experience and allowing professional scouts the opportunity to observe players under such conditions.
An ice hockey stick is a piece of equipment used in ice hockey to shoot, pass, and carry the puck across the ice. Ice hockey sticks are approximately 150–200 cm long, composed of a long, slender shaft with a flat extension at one end called the blade. National Hockey League (NHL) sticks are up to 63 inches long. The blade is the part of the stick used to contact the puck, and is typically 25 to 40 cm long. Stick dimensions can vary widely, as they are usually built to suit a particular player's size and preference. The blade is positioned at roughly a 135° angle from the axis of the shaft, giving the stick a partly 'L-shaped' appearance. The shaft of the stick is fairly rigid, but is slightly elastic to improve shot performance.
The shaft of a golf club is the long, tapered tube which connects the golfer's hands to the club head. While hundreds of different designs exist, the primary purpose of the golf shaft remains the same: to provide the player with a way to generate centrifugal force in order to effectively strike the ball. When properly gripped the player can hit the ball further and more accurately, whilst applying less force.
DeMarini Sports, Inc. is an American manufacturer of sports equipment headquartered in Hillsboro, Oregon, United States. The company is known for producing baseball and softball bats and batting gloves. They are known for bats such as the “CF” and the “Voodoo One”.
A wood is a type of club used in the sport of golf. Woods have longer shafts and larger, rounder heads than other club types, and are used to hit the ball longer distances than other types.
A baseball doughnut is a weighted ring that fits over the end of a baseball bat, used for warming up during a baseball game. A doughnut is thought to help increase bat speed. Doughnuts can weigh as little as 4 oz. and as much as 28 oz. Players feel baseball doughnuts increase bat velocity because after warming up with a baseball doughnut then decreasing the weight after taking the doughnut off, the swing feels faster. The heavier load of the weighted bat stimulates the neural system and increases muscle activation during lighter bat swings. Researchers have found that muscle contractions are stronger after reaching near maximal loads. One research study also found that additional weight added to the bat may strengthen the muscles of the forearms and wrists. Baseball doughnuts are based on the theory of complex training, which alternates the use of heavier and lighter weights to increase explosive power. By increasing the number of motor units recruited, this training increases muscle performance.
Sam Bat, officially The Original Maple Bat Corporation, is a Canadian company based in the town of Carleton Place, Ontario that manufactures baseball bats. It was the first company to supply baseball bats manufactured from maple wood to professional baseball players. As of 2013, it is one of 32 licensed baseball bat suppliers for Major League Baseball (MLB) and Minor League Baseball (MiLB) players. It is also a bat supplier for baseball leagues throughout the world, including Germany, Japan, Korea, Italy, Mexico, and the Netherlands. It is the official bat manufacturer for the Australian Baseball League.
BBCOR is a baseball bat performance standard created by the National Collegiate Athletic Association (NCAA) to certify the performance of Composite baseball bats used in competition.
Boning is the practice in American baseball of treating a baseball bat with a bone. The bone is run repeatedly up and down the barrel of the bat. The practice has the benefit of slightly hardening the bat by compressing the surface wood cells, and also of boosting hitting on the grounds that bone and hide go together, thus bone attracts hide, and as the baseball is covered in hide it will be attracted to the boned bat.
Baseball personnel have cheated by deliberately violating or circumventing the game's rules to gain an unfair advantage against an opponent. Examples of cheating include doctoring the ball, doctoring bats, electronic sign stealing, and the use of performance-enhancing substances. Other actions, such as fielders attempting to mislead baserunners about the location of the ball, are considered gamesmanship and are not in violation of the rules.
{{cite news}}
: Missing or empty |title=
(help)