1.1确定棒球和垒球球棒的惯性矩（MOI）、打击中心（COP）和平衡点（BP）的方法。这些物理特性用于测试方法 F1881 ，试验方法 F1890 和试验方法 F2219页 . 1.2在实验室中，在符合本试验方法规定要求的试验设备上测量MOI、COP和BP。 1.3以英寸-磅为单位的数值应视为标准值。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 本试验方法提供了一种实验室方法来测量蝙蝠的惯性特性，特别是重量、平衡点、冲击中心和MOI，以支持其他试验方法，包括本文件中引用的ASTM标准。 使用这种测试方法可以为体育管理机构提供方法，以建立有关蝙蝠物理特性的规则，特别是MOI。

1.1 Method for determining the moment of inertia (MOI), the center of percussion (COP), and the balance point (BP) of baseball and softball bats. These physical properties are used in Test Method F1881 , Test Method F1890 , and Test Methods F2219 . 1.2 The MOI, COP, and BP are measured in the laboratory on test equipment meeting the requirements defined in this test method. 1.3 The values stated in inch-pound units are to be regarded as the standard. 1.4 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 determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== This test method offers a laboratory means to measure the inertial properties of bats, specifically weight, balance point, center of percussion, and MOI, in support of other test methods including the ASTM standards referenced in this document. Use of this test method can provide sports governing bodies the means to establish rules regarding the physical properties of bats, specifically MOI.