ISO/TS 7849-1:2009 声学 振动测量法测定机械发出的空气噪声功率等级 第1部分：采用固定辐射系数的测量方法

标准编号：ISO/TS 7849-1:2009

中文名称：声学 振动测量法测定机械发出的空气噪声功率等级 第1部分：采用固定辐射系数的测量方法

英文名称：Acoustics — Determination of airborne sound power levels emitted by machinery using vibration measurement — Part 1: Survey method using a fixed radiation factor

发布日期：2009-03

标准范围

ISO/TS 7849-1:2009给出了通过表面振动测量确定机械或设备发出噪声的A加权声功率级上限的可再现方法的基本要求。该方法仅适用于固体结构振动表面发出的噪声，不适用于空气动力学产生的噪声。这种振动测量方法特别适用于由于高背景噪声或其他寄生环境干扰而无法进行准确的直接空气噪声测量的情况，例如ISO 3746、ISO 3747和ISO 9614（所有部分）中规定的测量；或者，如果需要区分总辐射声功率及其结构振动产生的部件。ISO/TS 7849-1:2009中描述的方法主要适用于相对于时间而言是静止的过程。

ISO/TS 7849-1:2009 gives basic requirements for reproducible methods for the determination of an upper limit for the A-weighted sound power level of the noise emitted by machinery or equipment by using surface vibration measurements. The method is only applicable to noise which is emitted by vibrating surfaces of solid structures and not to noise generated aerodynamically.This vibration measurement method is especially applicable in cases where accurate direct airborne noise measurements, e.g. as specified in ISO 3746, ISO 3747, and ISO 9614 (all parts), are not possible because of high background noise or other parasitic environmental interferences; or if a distinction is required between the total radiated sound power and its structure vibration generated component.The methods described in ISO/TS 7849-1:2009 apply mainly to processes that are stationary with respect to time.

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