1.1 本试验方法描述了加压管道中使用的聚乙烯的试样制备和冲击能测量方法。 1.2 试样取自颗粒或管道的树脂模压板。 1.3 单位-- 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.4 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。 1.5 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====== 5.1 Brown和Lu 4. , 5. 表明夏比冲击能与通过ISO 13477 S-4试验测量的快速裂纹扩展[RCP]行为的极限临界温度有关。 6. 5.2 该试验方法可用于测定管道制造中使用的聚乙烯的冲击能。该试验方法包括制备PE树脂的小型压缩成型样品，然后以特定方式对其进行缺口处理。然后在摆锤冲击机中对试样进行破碎。冲击能量以焦耳为单位记录。所获得的值称为夏比冲击能量。

1.1 This test method describes the specimen preparation and the method of measuring the impact energy of polyethylene used in pressurized pipes. 1.2 The test specimens are taken from compression molded plaques of the resin from pellets or pipe. 1.3 Units— The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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. 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 ====== 5.1 Brown and Lu 4 , 5 show the Charpy impact energy is related to the ultimate critical temperature of the rapid crack propagation [RCP] behavior as measured by the ISO 13477, S-4 test. 6 5.2 The test method may be used to determine the impact energy of polyethylene used in the manufacture of pipe. This test method involves the preparation of a small compression molded specimen of PE resin that is then notched in a specified manner. The specimen is then broken in a pendulum impact machine. The impact energy is recorded in joules. The value obtained is referred to as the Charpy impact energy.