1.1 本试验方法使用振荡砂测定窗户或观察口中使用的透明塑料和透明涂层对表面磨损的抵抗力。 1.2 单位-- 以国际单位制表示的值应被视为标准值。本标准不包括其他计量单位。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。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。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 =====意义和用途====== 4.1 塑料材料用作透明胶片、盖子或外壳时，会受到擦拭、清洁或其他类型的摩擦作用，导致磨损。本试验方法的目的是提供一种估算此类材料对这种类型和磨损程度的抵抗力的方法。

1.1 This test method determines the resistance of transparent plastics and transparent coatings utilized in windows or viewing ports to surface abrasion using oscillating sand. 1.2 Units— The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 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. 1.4 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. ====== Significance And Use ====== 4.1 Plastic materials, when used as transparencies, covers, or enclosures, are subject to wiping, cleaning, or other types of rubbing actions that cause abrasion. It is the intent of this test method to provide a means of estimating the resistance of such materials to this type and degree of abrasion.