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| Web URL(s): | http://crops.confex.com/crops/2005am/techprogram/P4509.HTM
Last checked: 01/31/2006 |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Brosnan, James;
McNitt, Andrew;
Livingston, David |
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| Author Affiliation: | Penn State University |
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| Title: | An apparatus to evaluate ball bounce on baseball field playing surfaces |
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| Section: | Graduate student oral competition: Breeding, fertility, environment, and management
Other records with the "Graduate student oral competition: Breeding, fertility, environment, and management" Section
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| Meeting Info.: | Salt Lake City, UT: 7-10 November, 2005 |
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| Source: | 2005 Annual Meeting Abstracts [ASA/CSSA/SSSA/CSSS]. 2005, p. [1]. |
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| Publishing Information: | [Madison, WI]: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Ball rebound resilience test; Baseball fields; Surfaces
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| Abstract/Contents: | "During a baseball game, balls strike the playing surface at variety of speeds and angles. The speed at which the ball moves forward, after impact with the playing surface, has been called the pace of the surface. Pace is closely related to the amount of energy that is returned to the ball after surface impact. Surfaces with excessive pace can jeopardize player safety while those with extremely slow pace can change the strategy of the game. An apparatus was developed to quantify ball bounce by measuring the coefficient of restitution (COR) for a playing surface. COR is defined as the ratio of a baseball's velocity after impact with the surface as a proportion of its velocity prior to impact. The apparatus uses infrared chronographs placed twelve inches from the testing surface in an arrangement to obtain the inbound and outbound velocities of baseballs propelled at varying speeds and angles to the surface. COR was measured on a variety of surfaces for each combination of three speeds and three impact angles. Highly significant differences occurred between surfaces (p < 0.001) and impact angles (p = 0.03). Pace was highest on skinned infield surfaces (COR= 0.598), lowest on natural turfgrass surfaces (COR = 0.378) with infilled synthetic turf surfaces being intermediate. No significant COR differences were found between traditional and infilled synthetic turf surfaces." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McNitt, A., D. Livingston, and J. Brosnan. 2005. An apparatus to evaluate ball bounce on baseball field playing surfaces. Annu. Meet. Abstr. p. [1]. |
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Last checked: 01/31/2006 |
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