Aluminum is lighter and more durable, and aluminum bats are easier to swing than wood bats of equal size, making them ideal for younger players … During the testing, the average pitched ball speed was 56.6 mph. Aluminum bats would be much too light for Major League Baseball. Aluminum bats are lighter and hit farther than wooden bats. Video data was then analyzed to obtain batted ball speeds. I agree with Dave - they use them because they're cheaper overall - and they're bad for the game. Balls were pitched from both pitching machines and regular batting practice pitchers, but pitchers were found to be more consistent. As such, the bat handle is very strong and will not break. This regulation allows the players to have enough time to react to the ball once it is hit. Traditionally, wooden bats were used because they were the only option. Bad side effect: it comes off the bat faster and if yo happen to be the pitcher who gets it with a line drive, that's bad. While watching ESPN Sports Center one night towards the end of May 2003, I saw a clip from a college game in which a metal bat shattered leaving the batter holding the handle and half the barrel while the other half of the barrel flew out and landed next to the shortstop. Aluminum. Wooden bats are heavier and solid, whereas aluminum and titanium bats are much lighter and hollow.  A.S. Weyrich, S.P. Greenwald R.M., L.H. Batted ball speeds were measured using a radar gun. Russell, " "Hoop frequency as a predictor of performance for softball bats," Engineering of Sport 5, Vol. The purpose of this document is not to argue for or against aluminum bats. Thus baseball programs get but a pittance, and cannot afford to splurge on wooden bats, which break, and must go with aluminum, which do not. While there are exceptions (Hall of Famer Joe Sewell supposedly used only one bat during his entire 14 year career) professional players typically go through several dozen bats each during a typical baseball season. The first metal baseball bats that Valesente saw being used in collegiate baseball were Worth bats. Hester and K. Koenig, "Performance measurement of baseball bats," Journal of the Mississippi Academy of the Sciences, 38(2), 7-10 (1993) Only wooden bats are allowed in major league baseball. Penna , and J.J. Crisco,"Differences in Batted Ball Speed with Wood and Aluminum Baseball Bats: A Batting Cage Study," J. Appl. ELI5: Why do college baseball players still use aluminum bats? Likewise hitters often find it to be considerably difficult to make the change from aluminum to wood, especially when dealing with inside pitches. Supporters of an aluminum or composite bat note that it can increase offensive performance, as the speed of a ball off a metal bat is generally faster than off a wood bat. Money?? In addition, the hardness and resilience of aluminum can result in much greater speeds when the ball comes off the bat. The answer is that aluminum bats are banned in the professional league because aluminum bats are easier to use. MLB Trivia: Two different Indians' pitchers has won the AL Cy Young since 2010. Who are the two pitchers? While aluminum bats are common from little league to college baseball, MLB remains steadfast in its use of wooden bats. Furthermore, most of the energy temporarily stored in the barrel is returned to the ball, and the energy which is lost in the bat compression is a small fraction of what would have been lost in the ball if it had impacted a wood bat instead. Youth and college players can use metal bats. Aluminum is superior to wood because it is lighter and can be swung faster, resulting in balls being driven farther. Use of a metal bat is somewhat controversial. If bats were lighter, players would be able to swing with a greater force than they are able to with wooden bats, making it easier for professional players to hit a pitch. Stodden and J.R. Andrews, "Relationship between bat mass properties and bat velocity," Sports Eng., 5, 1-8 (2002) "Any idiot can see that the ball jumps off an aluminum bat faster than off of a wooden bat," said Jim Morris, head baseball coach at the University of Miami. All of these games are now affected by how much money the player/team has to spend on all this technology. Aluminum baseball bats first came onto the scene back in the early 1970s, and over the years have gradually phased out wooden bats in youth baseball mainly for economic reasons. Aluminum is much stronger than ash wood, and the handle of an aluminum bat is a thin cylindrical tube with reasonably thick walls (thicker than the barrel portion). Greenwald, "Batted Ball Speed as a Function of Swing Speed and Impact Location," presented at the 2001 Annual SGMA Baseball/Softball Industry Meeting, Chicago, IL (2001). Again, the only published study todate which offers evidence of an enhancement in performance for metal bats due to an elastic property of the bat is the Crisco-Greenwald study. The first aluminum bats were heavy and did not perform much differently than wood bats. Other You'd think with how many players there are in minor league system that come out of college, they'd want to get accustomed to using wooden bats like in the pros. Figure 3 compares batted ball speeds for balls hit with a wood bat (orange dots) and the highest performing metal bat (blue dots) used in their study. Omaha puts up a lot of cash and all the teams are endorsed by metal bat makers. The results, summarized in Fig. 48, 505-510, (1977). This answer might seem a little obvious, but think about it! Because it's legal to use aluminum bats, since the aluminum bats create more vibration the ball flys further giving potential scouts the illusion that they can hit the ball further than they probably could with a wooden bat. By college baseball players? Join Yahoo Answers and get 100 points today. Get your answers by asking now. Because of shortages of quality wood, and the higher cost of good quality bats, most college teams completely switched over to aluminum bats during the 1980's. Keep reading to learn about the benefits of each type […] Biomech., 17, 241-252 (2001). Aluminum or metal bats are not mandated, and wood bats are allowed, so why do so many college players use them (and thus, seem to prefer them)? What I want to do here is discuss experimental evidence that a trampoline effect really does seem to be partly responsible for improvement in performance of aluminum bats over wood. Scientific evidence that batted ball speed is faster for aluminum baseball bats. The data also shows that not all metal bats are the same. They learn while playing in highschool and college that inside pitches get hit for runs. Sports Exerc., 21, 199-205 (1989) The data shows an average batted ball speed for wood bats (W) around 98.6-mph, while balls hit with metal bats (M1-M5) left the bat with speeds averaging between 100.3 mph and 106.5-mph, up to 8-mph faster than wood bats. Is one better than the other?  J.J. Crisco and R.W. Marucci Cat8 -3 College Baseball Bat. Wood bats, especially the thin handled ash bats used by a majority of today's players, have a tendency to break upon impact with a ball near the middle of the bat. Figure 4. Aluminum bats make inside pitches singles and the bats don't break. In other words, I simply want to provide an explanation, backed up with experimental evidence, why it might be possible for a metal bat to outperform a wood bat. Over the past forty years, an overwhelming majority of players have chosen to use them rather than their wooden counterparts. That’s due to one major factor—the weight of the barrel is heavier in wood bats. They found that the width of the sweet spot was nearly the same for all bats (wood and metal) bats tested. The point I want to make, however, is that Piazza's bat broke. Aluminum bats were introduced long before modern sponsorships; they were legalized because of the sharply rising costs of wooden bats. 12-17 (2003) The batted-ball speeds measured in the Crisco-Greenwald study are significantly higher than batted-ball speeds obainted with bats which currently pass the NCAA performance standards. Because the barrel of an aluminum bat is hollow, the distribution of mass along the length of a metal bat is considerably different than it is for a solid wood bat. One of the most obvious differences in college baseball is the use of metal bats, which was first permitted by the NCAA back in 1975. Crisco and Greenwald defined the sweet spot as the range of locations on the bat barrel for which the highest 10% of batted ball speeds were obtained. Plotting the data this way normalizes the results so as to remove the effect of different moments-of-inertia (see reason ). You can sign in to vote the answer. Figure 2 compares the balance points of four 30" youth bats: three wood bats of weights 26oz, 23oz, and 20oz, and an 27oz aluminum bat. I measured the frequency of the mode of vibration in the barrel, called the hoop mode, which gives rise to the trampoline effect. The issue is … This is why most college teams switched to aluminum in the early 1980s, because wood bats would break a lot, high quality wood was harder to find, and so wood bats became more expensive. There are no studies showing increase in injury due to use of non-wood bats and the rules currently make it such that the ball rebounds about the same from a non-wood bat ( called BESR rating) as from wood. In fact, the increased demand for alloy bats and especially the aluminum baseball bat has a number of reasons behind it. Professional leagues use wooden baseball bats, but at all levels of amateur play, including college play, players use metal bats. When a ball hits a wood bat, it compresses to nearly half its original diameter, losing up to 75% of its initial energy to internal friction forces during this compression. As previosly mentioned a side effect is the distance and speed that the ball come off the aluminum, while they are not banning them and a previous person commented, they are requiring the companies to make them perform the specifications of wood, mostly to keep people from getting killed.  L.R. One of the priniciple conslusions of the Criso-Greenwald study is that for metal and wood bats with similarly sized sweet spots, the batted ball speed will be higher for the metal bat. The company began manufacturing aluminum bats in 1968. Well, It might seem kind of cool when you first think about it, but don’t we want our pros to really show some skills to muscle a home run? Most college and high schools use aluminum bats because they dont break and they are on budgets. During the Summer of 2004 I was granted access to the five metal bats used in their batting cage study. Messier, B.S. Penna, "Batting performance of wood and metal baseball bats," Med. How do you think about the answers? Baseball, Tennis, Golf - we'd be better off if they all went back to wood instead of the high tech composites. 2, pp. I grew up using wooden baseball bats until I reached college baseball. Are Baseball fans some of the MEANEST, SNOBBIEST & MOST OBNOXIOUS FANS IN ALL OF SPORTS.  J.J. Crisco and R.W. The controversial topic of safety and the metal versus aluminum debate is something I would like to stay away from, especially since I have nothing significant to add to the discussion. The most comprehensive study comparing metal and wood bats under realistic playing conditions that I have come across was published by Crisco and Greenwald. Performance of hollow metal bats is due to the trampoline effect. As aluminum alloy gives the bat a lightweight, well-formed, balanced and sturdy structure which is not easily possible in other forms of baseball bats. 641-647 (International Sports Engineering Association, 2004). The data from the Crisco-Greenwald study should NOT be used to argue against the use of aluminum bats because this data does not represent the status of bat performance under current NCAA rules. Just like I pointed out from my early years, metal bats have a way of making the ball fly. Piazza's bat broke and the barrel portion bounced out towards Clemens on the mound. July 19-22 (2000). Most noticeably is the fact that the ball will travel farther. The results were an average batted ball speed (for line drives) of 88.6 mph for the wood bat and 92.5 mph for the aluminum bat. The 1989 study found that the rebound speed of the ball depended strongly on impact location, and somewhat on how strongly the player was gripping the bat. Originally, it was because aluminum bats last a lot longer. Each player would take several swings with either a wood or aluminum bat (randomly chosen), rest for 10 minutes, then take several swings with the other bat. Clemens picked up the broken bat and threw it towards Piazza as he ran towards first. Instead I would like to look at the physics of baseball bats and investigate the scientific data to support the claim that metal bats perform better than wood bats. Ruchmann, and M.J. Berry, "Effects of bat composition, grip firmness, and impact location on postimpact ball velocity," Med. Blume, and L.H. Thus, the bats used in this study are not representative of aluminum bats allowed for use at high school and college levels under current NCAA rules. Chicago, IL. The plot clearly shows that the higher performing bats have a lower hoop frequency, which indicates that the simple mass-spring model of the trampoline effect captures the essential physics. Why Wood Bats?  R.M. [5,6] Their study involved actual players swinging bats at pitched balls in a batting cage. As pretty much any hitter who has used both metal and wooden baseball bats can tell you, metal bats are vastly superior. Baseball is a great game, and wooden bats keep the fun, traditional aspects of baseball, while making it entertaining and safe for both players and fans. Data was collected for each player until 30 line drives were produced within a certain range of locations in the outfield.  In this study balls were shot from a pitching machine towards bats held stationary (without swinging) in the hands of a player.  D.A. 28-38, (Prentice Hall, 1997) Not all baseball bats are made the same. Can the Los Angeles Dodgers repeat in 2021? The apparent discrepency appears to be that "Despite the amount of controversy generated, there are presently no available data describing the performance of metal and wood bats in the field. You may be wondering why high school and college baseball players use aluminum bats but league players use wooden bats? Bat-Exit Speed Standards Aluminum bats are used in college, high school and little league ball, but they're illegal in the major leagues where hitters must use wooden bats. Major league baseball has required that its players use wooden bats, but the aluminum bat has come to dominate the lower levels of baseball, from Little League to the college game. Fleisig, N. Zheng, D.F.  G.S. That’s why wooden bats have always be… 1, show conclusively that metal bats outperform wood bats. Bats with lower hoop frequency (more compliant barrels) have increased performance. As a result, fewer and fewer younger professional pitchers throw inside pitches than used to be the norm in years past. This advantage is a little tougher to scientifically validate - partly because the "sweet spot" is a term used to mean several different things relating to both the perception of feel and a measure of performance. 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