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Comparison of the performance of Uni...

Nabeshima, Shintaro.

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Comparison of the performance of United States and Japanese aluminum bats using U.S. and Japanese test protocols.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Comparison of the performance of United States and Japanese aluminum bats using U.S. and Japanese test protocols./
作者:	Nabeshima, Shintaro.
面頁冊數:	120 p.
附註:	Source: Masters Abstracts International, Volume: 42-06, page: 2324.
Contained By:	Masters Abstracts International42-06.
標題:	Engineering, Mechanical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1419774
ISBN:	0496245260

Comparison of the performance of United States and Japanese aluminum bats using U.S. and Japanese test protocols.
Nabeshima, Shintaro.

Comparison of the performance of United States and Japanese aluminum bats using U.S. and Japanese test protocols. - 120 p.

Source: Masters Abstracts International, Volume: 42-06, page: 2324.

Thesis (M.S.Eng.)--University of Massachusetts Lowell, 2004.

In 1998, the National Collegiate Athletic Association (NCAA) took steps to develop a scientific test methodology to measure and to control aluminum 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 bat performance. In contrast to the NCAA test methodology, the Japanese protocol uses a series of static tests. This paper compares the two protocol philosophies, presents experimental data highlighting the respective criteria of each approach and discusses how successful each approach has been in controlling the performance of nonwood baseball bats. Comparison data and analysis showed that some Japanese bats marginally outperformed U.S. bats with respect to batted-ball speed. Despite the lack of direct restriction on batted-ball performance using a dynamic test method, the Japanese regulation is controlling the performance of aluminum bats fairly well.

ISBN: 0496245260Subjects--Topical Terms:

783786
Engineering, Mechanical.

Comparison of the performance of United States and Japanese aluminum bats using U.S. and Japanese test protocols.
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520 $a In 1998, the National Collegiate Athletic Association (NCAA) took steps to develop a scientific test methodology to measure and to control aluminum 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 bat performance. In contrast to the NCAA test methodology, the Japanese protocol uses a series of static tests. This paper compares the two protocol philosophies, presents experimental data highlighting the respective criteria of each approach and discusses how successful each approach has been in controlling the performance of nonwood baseball bats. Comparison data and analysis showed that some Japanese bats marginally outperformed U.S. bats with respect to batted-ball speed. Despite the lack of direct restriction on batted-ball performance using a dynamic test method, the Japanese regulation is controlling the performance of aluminum bats fairly well.
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