Standard Specification for Preparation and Verification of Clay Blocks Used in Ballistic-Resistance Testing of Torso Body Armor
This specification describes a standardized method for preparation and verification of backing assemblies used in ballistic-resistant torso body armor testing and for reducing variability within and between laboratories. Included in this specification are the equipment used for preparation and verification of clay blocks, namely: backing fixture, backing fixture liner, bridge gauge, conditioning chamber, impactor, striking device, template, test setup, and velocity measurement equipment.
This specification also covers procedures for characterization of clay block verification test setup, clay block preparation, clay block verification procedure prior to ballistic testing, clay block repair, clay block verification between test items, and clay block verification after final shot on clay block.
1.1 The purpose of this specification is to provide a standardized method 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 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.
1.4 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.
1.5 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.
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