1.1 本试验方法涵盖航空航天透明塑料材料表面浅层或浅层划痕的目视检查。 1.2 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制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.3 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 所有透明塑料表面都有划痕。通常，它们是清洁操作中产生的非常精细的划痕，在透过塑料时看不见。清洁或处理不当可能导致更深的划痕。虽然它们可能不够深，不足以影响零件的结构完整性，但它们在某些位置的出现可能会分散通过塑料观察的观察者的注意力。因此，定义这些划痕的程序是有用的。

1.1 This test method covers the visual inspection of shallow or superficial scratches on the surface of aerospace transparent plastic materials. 1.2 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. 1.3 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 Scratches exist on all transparent plastic surfaces. Usually they are very fine scratches from cleaning operations that are not visible when looking through the plastic. Deeper scratches may result from careless cleaning or handling. While these may not be deep enough to affect the structural integrity of the part, their appearance in certain locations may be distracting to the observer looking through the plastic. Therefore, a procedure to define these scratches is useful.