ASTM F2219-2007 测量高速球棒性能的标准试验方法

sigh007

                   【英文标准名称】:     Standard Test Methods for Measuring High-Speed Bat Performance            【原文标准名称】:     测量高速球棒性能的标准试验方法            【标准号】:     ASTM F2219-2007            【标准状态】:     现行            【国别】:                 【发布日期】:     2007    【实施或试行日期】: 【发布单位】: 美国材料与试验协会(US-ASTM)【起草单位】: F08.26【标准类型】: (Test Method)【标准水平】: ()【中文主题词】: 棒球;球棒;高速;测量;性能【英文主题词】: baseball bats; baseballs; bat performance; BBCOR; BBS; BESR; COR; softball bats; softballs【摘要】: These test methods offer a laboratory measure of the performance of baseball and softball bats. Use of these test methods can provide quantitative batted-ball speed and metrics of bat performance.1.1 These test methods define a method for determining bat performance by measuring the bat-ball coefficient of restitution (BBCOR), deriving the ball exit speed ratio (BESR), and calculating a batted-ball speed (BBS). It is applicable to baseball and softball bats of any construction or material. The test methods provide quantitative measures of bat dynamic performance that may be used for comparison purposes.1.2 The BBCOR, BESR, and BBS are each calculated from measurements taken in the laboratory on test equipment meeting the requirements defined in this specification.1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.【中国标准分类号】: Y55【国际标准分类号】: 97_220_01【页数】: 5P.;A4【正文语种】:           
         

chriswhuang

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