1.1 该测试方法涵盖了按下和释放薄膜开关至预定循环次数所需的设置、程序和设备。 1.2 该测试方法还包括在薄膜开关循环过程中可选使用指定的电压和电流。 1.3 此试验方法可与其他ASTM标准一起使用，如试验方法 F1596 . 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====== 4.1 执行该测试是为了确定开关条件下的电接触可靠性，以及在开关组件工作的环境中由开关组件的机械致动引起的物理变化。该试验产生的劣化迹象，即基材开裂、金属和聚酯圆顶、油墨分层等，有时可通过目视检查确定。然而，通过在暴露之前、期间和之后进行的测量，可以更容易地确定这些影响。总电路电阻、力位移、介电强度、绝缘电阻和电容是显示暴露造成的有害影响的测量类型。

1.1 This test method covers the setup, procedure, and apparatus required to depress and release a membrane switch to a predetermined number of cycles. 1.2 This test method also covers the optional use of specified voltage and current during the cycling of the membrane switch. 1.3 This test method can be used in conjunction with other ASTM standards such as Test Method F1596 . 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 ====== 4.1 This testing is performed to determine the electrical contact reliability under switching conditions and the physical changes caused by mechanical actuation of the switch assembly in the environments in which the assemblies operate. Evidence of deterioration, that is, cracking of substrate, domes both metal and polyester, ink delamination, etc., resulting from this test can at times be determined by visual examination. However, the effects may be more readily ascertained by measurements made prior to, during, and after exposure. Total circuit resistance, force-displacement, dielectric strength, insulation resistance, and capacitance are types of measurements that show the deleterious effects due to exposure.