1.1 本试验方法测量设计用于在操作电锯时保护脚的脚保护装置的切割阻力。 1.2 该测试方法可用于测试是否符合既定安全标准中的最低性能要求。 1.2.1 根据买方和供应商之间的协议或既定安全标准的要求，本试验方法可用于确定以下任何一项或两项:( 1. )链条速度50（CS50）( 2. )在指定的链条速度下成功/失败（卡住/链条停止）。 1.3 该试验方法可用于确定既定安全标准中规定的覆盖区域的防护等级。 1.4 以国际单位制表示的值应视为标准值。 注1: 每个系统中规定的值可能不完全相等；因此，必须独立使用每个系统，而不以任何方式组合值。 1.5 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。 1.6 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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 本试验方法的目的是提供一个可测量的性能标准，该标准定义了对脚保护装置提供的锯链切割动作的切割阻力水平。 5.2 根据本试验方法测试的脚保护装置可证明其保护作用，具体如下:( 1. )当与移动锯链接触时，材料抵抗切割；( 2. )材料的一部分被拉入锯链和驱动机构中以阻止锯链运动；( 3. )所述材料抵抗切割并吸收旋转能量，使得锯链速度可以被充分地减慢以停止锯链的运动；或( 4. )这些的任意组合。 5.3 如果因报告的测试结果不同而产生争议，在使用该测试方法进行商业装运的验收测试时，买方和供应商应进行比较测试，以确定其实验室之间是否存在统计偏差。建议为调查偏差提供合格的统计协助。作为最低要求，双方应从同一批待评估部件中抽取一组试样。然后，应将相同数量的试样随机分配给每个实验室进行测试。 如果发现偏差，必须确定并纠正其原因，或者买方和供应商必须同意根据已知偏差解释未来的测试结果。

1.1 This test method measures cut resistance of foot protective devices that are designed to protect the foot when operating a chainsaw. 1.2 This test method may be used to test for compliance to minimum performance requirements in established safety standards. 1.2.1 By agreement between the purchaser and the supplier, or as required by established safety standards, this test method can be used to determine any one or both of the following: ( 1 ) chain speed 50 (CS50), ( 2 ) success/failure (jamming/chain stop) at specified chain speed. 1.3 This test method may be used to determine levels of protection for areas of coverage as stipulated in established safety standards. 1.4 The values stated in SI units are to be regarded as standard. Note 1: The values stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without combining values in any way. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 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 The purpose of this test method is to provide a measurable criterion of performance defining the level of cut resistance to the cutting action of a saw chain provided by foot protective devices. 5.2 The protection which can be demonstrated by the foot protective devices tested in accordance with this test method is achieved by: ( 1 ) the material resisting cutting when put in contact with the moving saw chain; ( 2 ) a part of the material being drawn into the saw chain and drive mechanism to block the saw chain movement; ( 3 ) the materials resisting cutting and absorbing rotational energy so that saw chain speed can be slowed down sufficiently to stop the movement of the saw chain; or ( 4 ) any combination of these. 5.3 In case of a dispute arising from differences in reported test results, when using this test method for acceptance testing of commercial shipments, the purchaser and the supplier should perform comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens from the same lot of components to be evaluated. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. If a bias is found, either its cause must be determined and corrected, or the purchaser and the supplier must agree to interpret future test results in light of the known bias.