1.1 本规范旨在提供防弹躯干防弹衣试验中使用的背衬组件的制备和验证标准化方法，并减少实验室内部和实验室之间的变异性。 1.2 背衬组件是含有ROMA Plastilina No.1®的粘土块 2. 粘土作为背衬材料。粘土用作见证材料，并提供测试项目性能的可测量指示。 1.3 本规范确定了可使用的两种粘土验证冲击器:( 1. )圆柱形和( 2. )球形。购买者和其他用户将指定要使用的粘土验证冲击器。 1.4 本规范主要针对测试实验室，但可能适用于对防弹衣进行防弹测试的防弹衣制造商、研究人员和最终用户。 1.5 单位- 以SI单位表示的值应视为标准值。括号中给出的值是非SI单位的数学转换，仅供参考。 1.6 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 The purpose of this specification is to provide standardized methods for preparation and verification of backing assemblies used in ballistic-resistant torso body armor testing and to reduce variability within and between laboratories. 1.2 The backing assembly is a clay block that contains ROMA Plastilina No. 1® 2 clay as the backing material. The clay serves as a witness material and provides a measurable indication of test item performance. 1.3 This specification identifies two clay-verification impactors that may be used: ( 1 ) cylindrical and ( 2 ) spherical. Purchasers and other users will specify the clay-verification impactor to be used. 1.4 This specification is primarily directed toward test laboratories but may be applicable to body armor manufacturers, researchers, and end users performing ballistic-resistance testing of body armor. 1.5 Units— The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to non-SI units that are provided for information only. 1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.