1.1 本标准描述了一种实验室方法，通过使用标准车轮（实践）来评估轮胎的安全带边缘分离倾向 F551/F551M ). 该评估是在实践中描述的经过加速实验室老化的轮胎上进行的 F2838 . 1.2 该方法可产生的试验结束（EOT）条件包括目标（安全带边缘分离）、非目标（可通过道路使用在乘客和轻型卡车轮胎中形成的安全带相关分离以外的条件）和非代表性（通常仅在实验室车轮上形成的条件）。 在本试验过程中，也可能不会产生任何可见的EOT条件。在这种情况下，用户可以选择指定完成时间（DCT）作为EOT条件。 1.3 以国际单位制表示的数值应视为标准。数据日志中给定的值 附录X1 括号中的内容仅供参考。 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、健康和环境实践，并确定监管限制的适用性。 有关具体的预防说明，请参阅第节 6. . 1.5 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。 ====意义和用途====== 4.1 安全带边缘分离是轮胎使用中可能遇到的一种轮胎状况，尤其是在高轮胎温度环境中。 4.2 本标准的目标是定义一个科学有效的协议，用于实验室生成先前已完成实验室加速老化的轮胎中的安全带边缘分离，如实践中所述 F2838 . 本试验方法不确定轮胎规格的性能极限或公差。 4.3 然而，如范围中所述，在规定的试验条件下，一些轮胎可能不会出现安全带边缘分离。他们可能会出现其他并非由于皮带边缘分离引起的EOT条件。此外，在DCT之前的测试过程中，一些轮胎可能不会出现任何EOT条件。

1.1 This standard describes a laboratory method to evaluate tires for their tendency to develop belt edge separation, via the use of a standard roadwheel (Practice F551/F551M ). This evaluation is conducted on tires that have undergone accelerated laboratory aging as described in Practice F2838 . 1.2 The End-of-Test (EOT) conditions that can be produced by this method include target (belt-edge separation), non-target (conditions other than belt-related separations that can be developed in passenger and light truck tires through on-road use), and non-representative (conditions that are typically developed only on laboratory roadwheels). There is also the possibility that no visible EOT conditions may be generated during the course of this test. In this instance the user may choose to select a designated completion time (DCT) as the EOT condition. 1.3 The values stated in SI units are to be regarded as the standard. The values given in the data log in Appendix X1 in parentheses are provided for information only. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 6 . 1.5 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 Belt edge separation is a tire condition that can be encountered in tire use, particularly in high tire temperature environments. 4.2 The goal of this standard is to define a scientifically valid protocol for the laboratory generation of belt edge separation in a tire that has previously completed accelerated laboratory aging as described in Practice F2838 . This test method does not establish performance limits or tolerances for tire specifications. 4.3 However, as stated in the scope, some tires may not develop belt edge separations under the specified test conditions. They may develop other EOT conditions that are not due to belt edge separation. Also, some tires may not develop any EOT conditions during the course of the test prior to a DCT.