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IEC 60068-2-64:2008
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Environmental testing - Part 2-64: Tests - Test Fh: Vibration, broadband random and guidance
环境测试 - 第2-64部分:测试 - 测试Fh:振动 宽带随机和指导
IEC 60068-2-64:2008证明了当受到规定的随机振动试验要求时,试样足以承受动态载荷,且其功能和/或结构完整性不会出现不可接受的退化。宽带随机振动可用于识别累积应力效应,以及由此产生的机械缺陷和指定性能的退化。该信息以及相关规范可用于评估试样的可接受性。本标准适用于可能因运输或操作环境(例如飞机、航天器和陆地车辆)而受到随机振动的试样。它主要用于未包装的样本,以及运输容器中的物品,后者可能被视为样本本身的一部分。
然而,如果物品已包装,则物品本身被称为产品,物品及其包装一起被称为试样。本标准可与IEC 60068-2-47:2005一起用于测试包装产品。如果试样受到运输或现实生活环境(例如在飞机、航天器及其运输容器中的物品)产生的随机和确定性振动的组合,纯随机试验可能不够。参考IEC 60068-3-8:2003,估算试样的动态振动环境,并在此基础上选择适当的试验方法。与前一版相比,主要的变化涉及删除方法1和方法2,用单一方法替换,用建议的试验光谱替换附录a,并删除附录C。
本版本还包括软包装试样的试验。具有符合IEC指南104的基本安全出版物的状态。
IEC 60068-2-64:2008 demonstrates the adequacy of specimens to resist dynamic loads without unacceptable degradation of its functional and/or structural integrity when subjected to the specified random vibration test requirements. Broadband random vibration may be used to identify accumulated stress effects and the resulting mechanical weakness and degradation in the specified performance. This information, in conjunction with the relevant specification, may be used to assess the acceptability of specimens. This standard is applicable to specimens which may be subjected to vibration of a stochastic nature resulting from transportation or operational environments, for example in aircraft, space vehicles and land vehicles. It is primarily intended for unpackaged specimens, and for items in their transportation container when the latter may be considered as part of the specimen itself. However, if the item is packaged, then the item itself is referred to as a product and the item and its packaging together are referred to as a test specimen. This standard may be used in conjunction with IEC 60068-2-47:2005, for testing packaged products. If the specimens are subjected to vibration of a combination of random and deterministic nature resulting from transportation or real life environments, for example in aircraft, space vehicles and for items in their transportation container, testing with pure random may not be sufficient. See IEC 60068-3-8:2003 for estimating the dynamic vibration environment of the specimen and based on that, selecting the appropriate test method. The major changes with regard to the previous edition concern the removal of Method 1 and Method 2, replaced by a single method, and replacement of Annex A with suggested test spectra and removal of Annex C. Also included in this revision is the testing of soft packed specimens. Has the status of a basic safety publication in accordance with IEC Guide 104.