17.140.20 机器和设备的噪声 标准查询与下载

GSO ISO/TS 7849-1:2015 声学 使用振动测量装置估计设备的空气声功率级 第1部分：使用恒定发射因子的调查方法

  Scope is not provided for this standard

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

GSO ISO/TS 7849-2:2015 声学 使用振动测量确定机械发出的空气声功率级 第2部分：工程方法 包括确定适当的辐射系数

  Scope is not provided for this standard

Acoustics -- Determination of airborne sound power levels emitted by machinery using vibration measurement -- Part 2: Engineering method including determination of the adequate radiation factor

GSO ISO 9295:2015 声学 计算机和商业设备噪声排放的声明值

This International Standard specifies four methods for the determination of the sound power levels of high-frequency noise emitted by computer and business equipment in the frequency range covered by the octave band centred at 16 kHz. They are complementary to the methods described in ISO 7779. The first three methods are based on the reverberation room technique described in clause 5 of ISO 7779 : 1988. The fourth method makes use of a free field over a reflecting plane as described in clause 6 of ISO 7779 : 1988. The test conditions which prescribe the installation and operation of the equipment are those specified in ISO 7779. While the four methods described in this International Standard are particularly suitable for computer and business equipment, they may also be applied to other types of equipment. This International Standard specifies methods for the determination of sound power levels in the frequency range covered by the octave band centred at 16 kHz which includes frequencies between 11,2 kHz and 22,4 kHz. NOTE — The sound power level in the 16 kHz octave band determined according to this International Standard typically is subject to a standard deviation of approximately 3 dB. A method for the measurement of high-frequency noise is in conformance with this International Standard if it satisfies all the mandatory requirements of one of the four methods described herein and if the information recorded and reported is that specified in clauses 8, 9 and 10, respectively.

Acoustics -- Measurement of high-frequency noise emitted by computer and business equipment

GSO ISO 9611:2015 声学 表征通过结构传输的声源特性与传导结构的声音发射相关 测量以灵活方式安装的设备通信中心的速度

1.1 General This International Standard specifies an approximate method of characterizing sources of structure-borne sound by the measurement of one-third-octave-band free velocity level spectra (or, if appropriate, octave-band velocity level spectra) on the supports or other connection points of machines mounted on resilient isolators. This structure-borne sound emission is considered with respect to the airborne or liquid-borne sound radiation of structures connected to the source under test. The results are only valid for applications in which the machine is mounted on sufficiently soft isolators on a sufficiently stiff and heavy foundation. NOTE 1 More conditions are given in annex H. A survey of the theoretical background is given in annex E. It is possible to satisfy the requirements for the test arrangement in almost any surroundings. Velocities measured at defined contact points give no complete description of structure-borne sound emission of the machinery. But, under specific conditions as described in this International Standard for resiliently mounted machinery, they give a subset of the source data required for a characterization. The results can be used a) to obtain data for technical specifications; b) for comparison with machines of similar type and size; and c) to obtain input data for computations on the transfer of structure-borne sound. 1.2 Frequency range The frequency range for which the method is applicable is limited by a low frequency f1 and an upper frequency f2. The low frequency limit f1 is set by the requirement that the supports vibrate freely; i.e. they are not affected by the isolators and the foundation structure on which the isolators are mounted. Annex A gives instructions on how to determine f1. The upper frequency limit f2 is determined by assuming that the supports behave as point sources of structure-borne sound. Annex B gives guidelines for the determination of f2. NOTES 2 For many machines, isolators can be selected which provide a frequency f1 between 20 Hz and 40 Hz. 3 Many machines have such a structure that f2 has a value between 1 kHz and 4 kHz. 1.3 Type of noise This International Standard applies to steady noise. 1.4 Degrees of freedom The procedures are described for all six components of the velocity: three orthogonal translational velocities and three orthogonal angular velocities. If it can be shown that, for a specific machine and a specific application, fewer components are sufficient to characterize the source, then it is permissible to reduce the number of measured components (see annex F). 1.5 Types of connection point The procedures in this International Standard are described for the main supports of a machine. The method is, however, applicable to other mounting faces at resilient elements such as the flange for a flexible coupling in the shaft of a diesel engine or the connection with pipes. In such cases, the methods for the determination of f1 and f2 (see annexes A and B) can be adapted to the unique conditions that apply.

Acoustics -- Characterization of sources of structure-borne sound with respect to sound radiation from connected structures -- Measurement of velocity at the contact points of machinery when resiliently mounted

GSO ISO 10494:2015 燃气轮机和燃气轮机组件 空气发射噪声的测量 工程/调查方法

1.1 This International Standard specifies methods for measuring the sound pressure levels on a measurement surface enveloping a source, and for calculating the sound power level produced by the source. It gives requirements for the test environment and instrumentation, as well as techniques for obtaining the surface sound pressure level from which the A-weighted sound power level of the source and octave or one-third-octave band sound power levels are calculated. This method may be used to perform acceptance tests. 1.2 The aim of this International Standard is a grade 2 (engineering) result (see table 1). When the correction for background noise exceeds the limit of 1,3 dB but is less than 3 dB, and/or the correction for environment exceeds the limits of 2 dB but is less than 7 dB, then a grade 3 (survey) result is obtained. 1.3 This International Standard applies to gas turbines and gas turbine sets — for industrial applications (e.g. stationary), — for installation on board ships, or offshore installations, road and railway vehicles. It does not apply to gas turbines in aircraft applications. 1.4 The methods defined in this International Standard apply to the measurement of the noise emission of a gas turbine or gas turbine set under steady-state operating conditions. The results are expressed as sound pressure levels, and sound power levels in Aweighted and in octave bands. 1.5 Measurements made in conformity with this International Standard should result in standard deviations which are equal to or less than those given in table 3. The uncertainties in table 3 depend not only on the accuracies with which sound pressure levels and measurement surface areas are determined, but also on the"near-field error" which increases for smaller measurement distances and lower frequencies (i.e. those below 250 Hz). The near-field error always leads to sound power levels which are higher than the real sound power levels. NOTES 1 If the methods specified in this International Standard are used to compare the sound power levels of similar machines that are omnidirectional and radiate broad-band noise, the uncertainty in this comparison tends to result in standard deviations which are less than those given in table 3, provided that the measurements are performed in the same environment with the same shape of measurement surface. 2 The standard deviations given in table 3 reflect the cumulative effects of all causes of measurement uncertainty, excluding variations in the sound power levels from test to test which may be caused, for example, by changes in the mounting or operating conditions of the source. The reproducibility and repeatability of the test result may be considerably better (i.e. smaller standard deviations) than the uncertainties given in table 3 would indicate. Table 1 — International Standards specifying various methods for determining the sound power levels of machines and equipment Inter-nationalStandard Classificationof method1) Testenvironment2) Volume ofsource Character ofnoise Sound powerlevelsobtainable Optionalinformationavailable 1) See ISO 2204. 2) If the requirements for the test environment are not met, the sound power level of the source shall be determined using another method of measurement that shall be agreed to by the manufacturer and the customer. ISO 3741 Precision (grade 1) room meeting specified re-quirements Preferably less than 1 % of test room volume Steady, band broadReverberation In one-third- octave or octave bands A-weighted sound power level ISO 3742 Steady, discrete- frequency or narrow-band ISO 3743 Engineering (grade 2) Special rever- beration test room band, narrow- Steady, band or discrete- frequency A-weighted broadISO and in octave bands Other weighted sound power levels ISO 3744 Engineering 2) Outdoors or in large room Greatest sion less than 15 m dimenISO Any A-weighted and in one- third-octave or octave bands Directivity infor(grade mation; sound pressure levels as a function of time; other weighted sound power levels ISO 3745 Precision (grade 1) Anechoic or semi-anechoic room Preferably less than 0,5 % of test room vol- ume Any ISO 3746 Survey (grade 3) No special test environment No restrictions: limited only by available test environment Any A-weighted Sound pressure levels as a function of time; other weighted sound power levels Table 2 — Limits for correction Grade of accuracy Background noise correction Environment correction dB dB 1) For higher values of background noise and/or corrections, the real sound power level cannot be determined with acceptable uncertainty, but the results can be useful to estimate an upper limit of the noise emission of the gas turbine or the gas turbine set to be tested. Grade 2 ≤ 1,3 ≤ 2 Grade 3 > 1,3 to ≤ 3 > 2 to ≤ 7 Special case1) > 3 > 7 Table 3 — Uncertainty in determining sound power levels, expressed as the largest value of the standard deviation Grade of accuracy Octave band centre frequency A-weighted 31,5 Hz/63 Hz 125 Hz 250 Hz to 500 Hz 1 000 Hz to 4 000 Hz 8 000 Hz Grade 2 5 3 2 1,5 2,5 2 Grade 3 5 NOTE — The uncertainty in determining Sound power levels expressed as the largest value of the Standard deviation for air intake inlet and gas exhaust outlet may be higher.

Gas turbines and gas turbine sets -- Measurement of emitted airborne noise -- Engineering/survey method

GSO ISO 10843:2015 声学 描述和物理测量单个脉冲或一系列脉冲的方法

This International Standard describes preferred methods for the description and the physical measurement of single impulsive sounds or short series of impulsive sounds and for the presentation of the data. It does not provide methods for interpreting the potential effects of series of impulses of noise on hearing, community response or structures. This International Standard applies to single impulsive sounds or short series of impulsive sounds such as those produced by explosions, artillery fire, bombing and similar activities, sonic booms, pistol and rifle fire, and cartridge-operated tools or machines. Two different kinds of measurements are considered: a) measurements of phase-sensitive parameters, such as peak sound pressure level and duration, that directly characterize the variation of sound pressure with time; and b) measurements of time-integrated quantities such as frequency-weighted sound exposure level or sound energy level.

Acoustics -- Methods for the description and physical measurement of single impulses or series of impulses

GSO ISO 6394:2015 土方设备 作业现场发出的声压级的估算 静态测试条件

This International Standard specifies a method for determining the emission sound pressure level of earth-moving machinery at the operator’s position, measured in terms of the time-averaged A-weighted emission sound pressure level while the machine is stationary with the engine operating at the rated speed under no-load condi­tions. It is applicable to earth-moving machinery as defined in ISO 6165 and specified in ISO 6393:2008, Annex A.

Earth-moving machinery -- Determination of emission sound pressure level at operator's position -- Stationary test conditions

GSO ISO 9296:2015 声学 表征通过结构传输的声源特性与连接结构的声发射相关 测量灵活安装的仪器接触点处的速度

This International Standard applies to computer and business equipment. This International Standard specifies — the method for determining the declared noise emission values; — acoustical and product information to be given in technical documents supplied to users by the manufacturer; — the method for verifying the declared noise emission values given by the manufacturers. The uniform methods in this International Standard use the noise data obtained in accordance with ISO 7779 and the procedures specified in ISO 4871 and ISO 7574 The basic declared noise emission values are the declared A-weighted sound power level, LwAd (a statistical maximum value corresponding to Lc in ISO 7574), and the declared A-weighted sound pressure level, LpAm (a mean value), at the operator or bystander positions. The declared A-weighted sound power level, LWAd, permits comparison of noise emissions between different products and permits predictions of installation or workplace noise exposure levels1). Although the most useful quantity for calculating exposure levels due to one or more sound sources is usually the declared A-weighted sound power level of the individual source(s), the declared A-weighted sound pressure level, LpAm, may be used to estimate the exposure level in the immediate vicinity of an isolated piece of equipment. To avoid confusion between sound power levels and sound pressure levels, the A-weighted sound power level is declared in bels and the A-weighted sound pressure level is declared in decibels.

Acoustics -- Declared noise emission values of computer and business equipment

GSO ISO 7779:2015 声学 测量无线 ICT 设备发出的空气噪声

This International Standard specifies procedures for measuring and reporting the noise emission of information technology and telecommunications equipment. NOTE 1 This International Standard is considered part of a noise test code (see 3.1.2) for this type of equipment, and is based on basic noise emission standards (see 3.1.1) ISO 3741, ISO 3744, ISO 3745 and ISO 11201. The basic emission quantity is the A-weighted sound power level which may be used for comparing equipment of the same type but from different manufacturers, or for comparing different equipment. Three basic noise emission standards for determination of the sound power levels are specified in this International Standard in order to avoid undue restriction on existing facilities and experience. ISO 3741 specifies comparison measurements in a reverberation test room; ISO 3744 and ISO 3745 specify measurements in an essentially free field over a reflecting plane. Any one of these three basic noise emission standards can be selected and used exclusively in accordance with this International Standard when determining sound power levels of a machine. The A-weighted sound power level is supplemented by the A-weighted emission sound pressure level determined at the operator position(s) or the bystander positions, based on basic noise emission standard ISO 11201. This sound pressure level is not a worker's immission rating level, but it can assist in identifying any potential problems that could cause annoyance, activity interference, or hearing damage to operators and bystanders. Methods for determination of whether the noise emission includes prominent discrete tones or is impulsive in character are specified in Annexes D and E, respectively. This International Standard is suitable for type tests and provides methods for manufacturers and testing laboratories to obtain comparable results. The methods specified in this International Standard allow the determination of noise emission levels for a functional unit (see 3.1.4) tested individually. The procedures apply to equipment which emits broad-band noise, narrow-band noise and noise which contains discrete-frequency components, or impulsive noise. The sound power and emission sound pressure levels obtained can serve noise emission declaration and comparison purposes (see ISO 9296). NOTE 2 The sound power and emission sound pressure levels obtained are not to be considered as installation noise immission levels; however, they can be used for installation planning (see ECMA TR/27[4]). If sound power levels obtained are determined for a number of functional units of the same production series, they can be used to determine a statistical value for that production series (see ISO 9296).

Acoustics -- Measurement of airborne noise emitted by information technology and telecommunications equipment

GSO ISO 5131:2015 声学 拖拉机和农林设备 影响操作员位置的噪声测量 调查方法

This International Standard specifies a method for the measurement of the noise at the position of the operator(s) of a tractor or machine used in agriculture and forestry. The measured noise relates only to the basic machine and applies to self-propelled tractors and machines with either machine-carried or pedestrian operators. The results will provide information which will enable operators to avoid exposing themselves to noise levels which could put their hearing at risk. The test procedures specified in this International Standard are survey methods as defined in ISO 2204. This International Standard also specifies the general conditions for measuring and reporting the noise at an operator's position on agricultural and forestry tractors and field machines. Additional conditions for measurements in connection with particular types of machines are specified in annexes as follows: Annex A — Agricultural and forestry tractors Annex В — Self-propelled agricultural machines Annex C — Pedestrian-controlled agricultural machines Annex D — Forestry forwarders and skidders The conditions specified for the operation of the machines during the measurements are designed to provide a realistic and repeatable assessment of the maximum noise to which an operator should be subjected when operating a machine. NOTE 1 Further annexes specifying, for example, additional conditions for other types of agricultural and forestry machinery may be included in future revisions of this International Standard.

Acoustics -- Tractors and machinery for agriculture and forestry -- Measurement of noise at the operator's position -- Survey method

GSO ISO 5135:2015 声学 通过在回声室中测量来确定气动终端、气动终端、阻尼器和阀门的噪声声压级

This International Standard establishes general rules for the acoustic testing of air-terminal units, dampers and valves used in air diffusion and air distribution systems as defined in ISO 3258 in order to determine sound power levels as defined in ISO 3740.

Acoustics -- Determination of sound power levels of noise from air-terminal devices, air-terminal units, dampers and valves by measurement in a reverberation room

ASTM E750-15 表征声发射仪器的标准实施规程

5.1 This practice provides information necessary to document the accuracy and performance of an Acoustic Emission system. This information is useful for reference purposes to assure that the instrumentation performance remains consistent with time and use, and provides the information needed to adjust the system to maintain its consistency. 5.2 The methods set forth in this practice are not intended to be either exclusive or exhaustive. 5.3 Difficult or questionable instrumentation measurements should be referred to electronics engineering personnel. 5.4 It is recommended that personnel responsible for carrying out instrument measurements using this practice should be experienced in instrumentation measurements, as well as all the required test equipment being used to make the measurements. 1.1 This practice is recommended for use in testing and measuring operating characteristics of acoustic emission electronic components or units. (See Appendix X1 for a description of components and units.) It is not intended that this practice be used for routine checks of acoustic emission instrumentation, but rather for periodic evaluation or in the event of a malfunction. The sensor is not addressed in this document other than suggesting methods for standardizing system gains (equalizing them channel to channel) when sensors are present. 1.2 Where the manufacturer provides testing and measuring details in an operating and maintenance manual, the manufacturer's methods should be used in conjunction with the methods described in this practice. 1.3 The methods (techniques) used for testing and measuring the components or units of acoustic emission instrumentation, and the results of such testing and measuring should be documented. Documentation should consist of photographs, screenshots, charts or graphs, calculations, and tabulations where applicable. 1.4 AE systems that use computers to control the collection, storage, display, and data analysis, might include waveform collection as well as a wide selection of measurement parameters (features) relating to the AE signal. The manufacturer provides a specification for each system that specifies the operating range and conditions for the system. All calibration and acceptance testing of computer-based AE systems must use the manufacturer's specification as a guide. This practice does not cover testing of the computer or computer peripherals. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 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.

Standard Practice for Characterizing Acoustic Emission Instrumentation

KS I ISO 11202-2014 声学.机械和设备发出的噪声.用近似环境校正法测量工作站和其他指定位置的发射声压级

Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions applying approximate environmental corrections

KS I ISO 7574-1:2014 声学 测定和检验机械及设备噪声标定值的统计方法 第1部分：通用要求和定义

Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 1: General considerations and definitions

KS I ISO 11202:2014 声学 机械和设备发出的噪声 用近似环境校正法测定工作站和其他指定位置的发射声压级

Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions applying approximate environmental corrections

KS I ISO 8297:2014 声学 为评定环境测定多声源工业厂房的声功率级 工程法

Acoustics — Determination of sound power levels of multisource industrial plants for evaluation of sound pressure levels in the environment — Engineering method

KS I ISO 12001:2014 声学 机器和设备发射的噪声 噪声试验规程的介绍和起草规则

Acoustics — Noise emitted by machinery and equipment — Rules for the drafting and presentation of a noise test code

KS I ISO 11200:2014 声学 机械和设备发出的噪声 测定工作站和其他指定位置发射声压级的基本标准的使用指南

Acoustics — Noise emitted by machinery and equipment — Guidelines for the use of basic standards for the determination of emission sound pressure levels at a work station and at other specified positions

KS I ISO 7574-2:2014 声学 测定和检验机械及设备噪声标定值的统计方法 第2部分：用于单个机械的方法

Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 2: Methods for stated values for individual machines

KS I ISO 5135:2014 声学 在混响室中测定空调终端设备、空调终端单元、阻尼器和调节阀门的噪声功率级

Acoustics — Determination of sound power levels of noise from air-terminal devices, air-terminal units, dampers and valves by measurement in a reverberation room