Standard of the Initial Ball Velocity for a Fly Ball in Baseball Hitting by Hirotaka Nakashima, Gen Horiuchi, Shinji Sakurai

Subjects: “…batted ball velocity…”
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A Hand-Worn Inertial Measurement Unit for Detection of Bat–Ball Impact during Baseball Hitting by Niroshan G. Punchihewa, Hideki Arakawa, Etsuo Chosa, Go Yamako

“…Different motion-capture systems use different methods to identify bat–ball impact. However, the level of accuracy to detect bat–ball impact is not well documented. …”
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Measurement Space Partitioning for Estimation and Prediction by Glenn Healey, Shiyuan Zhao

“…We use large sets of trajectory measurements acquired by in-game sensors to show that the predictive value of a batted ball depends on its physical properties. This knowledge is exploited to estimate batted-ball distributions defined over a multidimensional measurement space from observed distributions by using regression parameters that adapt to batted ball properties. …”
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Combining Radar and Optical Sensor Data to Measure Player Value in Baseball by Glenn Healey

“…Evaluating a player’s talent level based on batted balls is one of the most important and difficult tasks facing baseball analysts. …”
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Study on restitution characteristics of new/old rubber baseballs and metal baseball bat adapting to the new rubber baseball by Shinobu SAKAI, Daisuke YASUTOMI, Jin-Xing SHI, Akira URAKAMI, Masato MIZOGUCHI

“…In rubber baseball games, when the rubber ball is hit by a baseball bat, the rubber ball is deformed greatly comparing to an official baseball ball, and the batted ball speed decreases due to the energy loss during the deformation. …”
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Impact of the Variable Weighted MOI Baseball Bat on Swing Velocity Enhancement by Chapman, Luke A.

“…Bat velocity is one key aspect of a successful baseball swing because as bat velocity improves, key components such as decision time, swing mechanics and batted-ball velocity also improve. As such, a prototype bat design is proposed in this study through a brief validation protocol of identified literature that speaks to core physical principles (i.e. moment of inertia and center of mass) combined with market research validation. …”
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Model deflection analysis of wooden baseball bat at impact as the bending of freely rotating beam pinned at one end and subjected to impact and inertia forces by Hiroyuki KATO, Jyungo KAWAKAMI

“…The present model provides the evidence for the COP (center of percussion) to be located very close to but not exactly in the sweet spot where the kinetic energy of bats can be most effectively transferred to the outgoing velocity of batted ball. Additionally, the deflection analysis determines the bending stress imposed at given velocities of bat and ball. …”
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Aerodynamic stability of a badminton shuttlecock by Kenichi NAKAGAWA, Hiroaki HASEGAWA, Masahide MURAKAMI, Shigeru OBAYASHI

“…Badminton is one of the most popular sports in the world and is famous as the sport having the fastest initial velocity of a batted ball among all ball games. Initial velocity immediately after smashing may reach up to 408 km/h (113 m/s) at maximum. …”
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Accuracy and Error Trends of Commercially Available Bat Swing Sensors in Baseball by Yoshitaka Morishita, Tsutomu Jinji

“…In baseball, the swing speed and swing angle of the bat just before ball impact are important to increase the speed and horizontal distance of a batted ball. This study investigated the accuracies and error trends of four commercially available bat sensors to measure these parameters. …”
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Characterization of Maple and Ash Material Properties for the Finite Element Modeling of Wood Baseball Bats by Joshua Fortin-Smith, James Sherwood, Patrick Drane, David Kretschmann

“…The finite element modeling results for the Charpy and bat/ball impacts show good correlation with the experimental data.…”
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Monsters, Bottle Rockets, Bamboos, Balls and the Utmost Depth: enchantments in performances of a streetwise youth by Gustavo Coelho (Universidade do Estado do Rio de Janeiro – UERJ, Rio de Janeiro/RJ, Brazil)

“…Such network involves piXação (graffiti tagging), torcidas organizadas (soccer supporters’ groups, i.e. hooligans, ultras, etc.), bate-bolas (bat-balls, masked carnival clowns) and bailes funk (favela funk parties). …”
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Investigating if MLB pitchers are self-selecting for high or low drag balls by Sonner, Jessica

“…The drag coefficient of 4928 batted balls in the MLB in 2019 were measured and matched with 121 pitchers who threw the ball to examine if they are statistically more or less likely to select a high or low drag ball to throw. …”
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Effect of hoop frequency and impact velocity on BBCOR of metal baseball bat by Yuu TAKASHIMA, Fumiya OMI, Yutaka KOBAYASHI, Kenichi TOKIEDA, Seishi FUJIHARA, Kazuyoshi ARAI

“…The National Collegiate Athletic Association (NCAA) only allows the use of bats whose bat-ball coefficient of restitution (BBCOR) is ≤0.50. …”
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An Investigation of Wood Baseball Bat Durability as a Function of Bat Profile and Slope of Grain Using Finite Element Modeling and Statistical Analysis by Blake Campshure, Patrick Drane, James A. Sherwood

“…Finite element models of the bat/ball impact of four different popular bat profiles were created using LS-DYNA software. …”
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Wood Bat Durability as a Function of Bat Profile and Slope of Grain by Blake Campshure, Patrick Drane, James Sherwood

“…Durability is defined here as the relative bat/ball speed that results in crack initiation, i.e., the higher the breaking speed, the better the durability. …”
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Novel Twenty20 batting simulations: a strategy for research and improved practice [version 2; peer review: 1 approved, 2 approved with reservations] by Samantha Kerr, Benita Olivier, David Goble, Tiago Lopes

“…Because batting simulations dictate run scoring outcomes, a method of quantifying a batter's performance from bat-ball contact scores is described. Ten elite batters achieved a mean performance score of 72 (SD = 26) and 88 (21) for the low and high strike rate simulations respectively. …”
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Effect of ball impact location and temperature on softball bat handle vibration by Goetz, Devon K.

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