1.1这些测试方法包括通过产品安装测试表面的垂直线性运动来确定未包装产品和未包装产品组件的共振。提出了两种替代试验方法: 试验方法A — 使用正弦振动进行共振搜索，以及 试验方法B — 使用随机振动进行共振搜索。 笔记 1-这两种试验方法不一定等同，也可能产生不同的结果。使用随机振动的测试可能更能代表运输环境，并且可能比正弦测试更快地进行。 1.2当这些产品共振在预期的运输环境频率范围内时，该信息可用于检查产品对振动的响应，以用于产品设计目的，或用于将这些临界频率下的运输振动输入最小化的容器或内部包装的设计。 由于振动损伤最有可能发生在产品共振频率，这些共振可能被视为潜在的产品脆弱点。 1.3从可选驻留试验方法获得的信息可用于评估共振部件的疲劳特性和产品修改。如果产品的响应需要设计不切实际或成本过高的运输集装箱，则这可能是必要的。 1.4这些测试方法不一定模拟产品在其操作或使用环境中会遇到的振动效应。为此，应使用其他更合适的测试程序。 1.5这些测试方法中给出的测试水平代表了当前可从研究调查和使用这些测试方法的经验中获得的最佳信息的相关性。 如果有更适用或更准确的数据可用，则应将其替换。 1.6以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.7 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和健康实践，并确定监管限制的适用性。 具体预防说明见第6节。 ====意义和用途====== 产品在运输环境中暴露于复杂的动态应力。确定产品的共振频率可以帮助包装设计师确定适当的包装系统，为产品提供充分的保护，并了解产品组件之间的复杂相互作用，因为它们与预期的运输振动输入有关。

1.1 These test methods cover the determination of resonances of unpackaged products and components of unpackaged products by means of vertical linear motion at the surface on which the product is mounted for test. Two alternate test methods are presented: Test Method A — Resonance Search Using Sinusoidal Vibration, and Test Method B — Resonance Search Using Random Vibration. Note 1—The two test methods are not necessarily equivalent and may not produce the same results. It is possible that tests using random vibration may be more representative of the transport environment and may be conducted more quickly than sine tests. 1.2 This information may be used to examine the response of products to vibration for product design purposes, or for the design of a container or interior package that will minimize transportation vibration inputs at these critical frequencies, when these products resonances are within the expected transportation environment frequency range. Since vibration damage is most likely to occur at product resonant frequencies, these resonances may be thought of as potential product fragility points. 1.3 Information obtained from the optional dwell test methods may be used to assess the fatigue characteristics of the resonating components and for product modification. This may become necessary if the response of a product would require design of an impractical or excessively costly shipping container. 1.4 These test methods do not necessarily simulate the vibration effects that the product will encounter in its operational or in-use environment. Other, more suitable test procedures should be used for this purpose. 1.5 Test levels given in these test methods represent the correlation of the best information currently available from research investigation and from experience in the use of these test methods. If more applicable or accurate data are available, they should be substituted. 1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.7 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 and health practices and determine the applicability of regulatory limitations prior to use. See Section 6 for specific precautionary statements. ====== Significance And Use ====== Products are exposed to complex dynamic stresses in the transportation environment. The determination of the resonant frequencies of the product may aid the packaging designer in determining the proper packaging system to provide adequate protection for the product, as well as providing an understanding of the complex interactions between the components of the product as they relate to expected transportation vibration inputs.