标准摘要
[中文适用范围]： 本IEC 60068的第2-65部分提供了标准程序和指南，用于进行声学测试，以确定试件承受或可能承受的指定声压级环境引起的振动能力。对于声压级环境低于120 dB的情况，通常不需要进行声学测试。本标准确定试件的机械弱点和/或性能退化，并利用此信息，结合相关规范，决定其是否可接受用于使用。测试方法也可用作确定试件机械鲁棒性或抗疲劳性的手段。描述了两种进行测试以及在声噪声场中测量声压级的程序，并考虑了在试件指定点测量振动响应的需要。它还提供了选择声噪声环境、频谱、声压级和暴露时间的指南。行波管法适用于气动湍流将激励部分或全部外表面的材料。此类应用包括飞机面板组件，其中激励仅存在于一侧。混响室法适用于宜通过分布式激励而非通过电动激振器的固定点将振动诱导到设备整个外表面的情况。 [外文原描述]： IEC 60068-2-65:2013 provides standard procedures and guidance for conducting acoustic tests in order to determine the ability of a specimen to withstand vibration caused by a specified sound-pressure level environment to which it is, or is liable to be, subjected. This second edition cancels and replaces the second edition, published in 1993, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - minor technical and editorial changes were made throughout the document as originally requested by the DE National Committee; - following comments at the CD stage, particularly from the UK National Committee, significant technical and editorial additions were made to the standard for acoustic testing employing the progressive wave tube technique.
英文名称Environmental testing - Part 2-65: Tests - Test Fg: Vibration - Acoustically induced method