Dynamic and performance characteristics of baseball bats.
نویسندگان
چکیده
منابع مشابه
Simulated Composite Baseball Bat Impacts Using Numerical and Experimental Techniques
A study has been undertaken to develop techniques for assessing baseball bat durability and performance. Experimental investigations were conducted by constructing a testing device to simulate the ball-bat interaction occurring in play. A sensitivity study of the machine’s inertia and forces on the bat were found to have a small effect on hit ball speed, and a much larger effect on bat stress. ...
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In 1998, the National Collegiate Athletic Association (NCAA) took steps to develop a scientific test methodology to measure and to control baseball bat performance. The resulting standard uses a hitting machine that pitches a ball at a moving bat to measure the BESR (Ball Exit Speed Ratio). Concurrently, the governing body for amateur baseball in Japan developed a test protocol for controlling ...
متن کاملUsing vibrational analysis to investigate the batted-ball performance of baseball bats
Hollow nonwood baseball bats have performance advantages over wooden bats. The hollow barrel bats act as a spring or trampoline during the bat-ball collision. The trampoline effect can occur at different natural frequencies known as hoop modes. To examine the effect of the hoop mode on the bat-ball collision, modal analysis and performance measurements were performed on a sample of hollow nonwo...
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In recent years, baseball bat performance has come under scrutiny. Fans of Major League Baseball have seen homerun records broken and the governing organizations of both college and high school baseball have stepped in with tighter controls of baseball bat performance. This paper discusses a few of the ways that baseball bat performance is affected by changes in the material and physical proper...
متن کاملExperimental study of the evolution of composite baseball bat performance
As composite bats are used in the field, microdamage can be developed in the form of microcracks in the matrix, fibre breakage and ply delamination, thereby reducing the barrel stiffness and increasing the resulting batted-ball speed. To replicate this microdamage with field-use phenomenon in the lab, an accelerated break in (ABI) process is employed by rolling the bats in a press. In this rese...
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عنوان ژورنال:
- Research quarterly
دوره 48 3 شماره
صفحات -
تاریخ انتشار 1977