Z32 噪声、振动测试方法 标准查询与下载



共找到 1380 条与 噪声、振动测试方法 相关的标准,共 92

本标准规定了地铁列车运行引起的环境噪声与振动控制的原则与方法。本标准适用于指导地铁建设项目噪声与振动环境影响评价工作,具体措施的设计和既有线路的降噪隔振治理可参照执行。

Code for Noise and Vibration Control of Subway

ICS
13.140
CCS
Z32
发布
2012/04/01
实施
2012/04/01

High voltage direct current (HVDC) substation audible noise

ICS
17.140.20;29.240.10;29.240.99
CCS
Z32
发布
2012-04-01
实施

Acoustics - Measurements of sound pressure level emitted by stationary road vehicles; Amendment 1

ICS
17.140.30;43.020
CCS
Z32
发布
2012-04-01
实施

This part of ISO 20283 provides guidelines for the instrumentation, measurement, and data processing procedures required to obtain reliable vibration data on ship propulsion systems. It also gives guidelines for the application of specific measuring techniques, which are common and adequate for measuring the mechanical vibration on propulsion plants of seagoing and inland vessels. The measuring techniques can be applied to diesel engine as well as turbine or electrically driven plants, always considering the specific limitation of application of each individually described procedure. The procedures specified in this part of ISO 20283 focus on repetitive mechanical vibration (steady-state or quasi-stationary like a sweep) and can therefore be inadequate for measuring and evaluating transient, very fast-changing or shock signals. This part of ISO 20283 mainly specifies techniques for measuring the mechanical vibration of the main propulsion plant during sea trials. The same or similar measuring principles can also be used for other purposes, such as performance monitoring, investigations of abnormal vibration in service, and evaluation of the condition of repaired parts. However, in such cases, the measuring procedure needs to be adapted to the specific requirements.

Mechanical vibration - Measurement of vibration on ships - Part 4: Measurement and evaluation of vibration of the ship propulsion machinery

ICS
17.140.30;47.020.01
CCS
Z32
发布
2012-04
实施

Mechanical vibration - Laboratory method for evaluating vehicle seat vibration - Part 1: Basic requirements - Amendment 2 (ISO 10326-1:1992/Amd 2:2011); German version EN 30326-1:1994/A2:2011

ICS
17.160
CCS
Z32
发布
2012-04
实施

Acoustics. Audiometric test methods. Speech audiometry

ICS
13.140
CCS
Z32
发布
2012-03-31
实施
2012-03-31

Acoustics. Test methods for the qualification of free-field environments

ICS
17.140.01
CCS
Z32
发布
2012-03-31
实施
2012-03-31

Mechanical vibration and shock. Measurement of vibration power flow from machines into connected support structures. Direct method

ICS
17.160
CCS
Z32
发布
2012-03-31
实施
2012-03-31

Mechanical vibration and shock. Measurement of vibration power flow from machines into connected support structures. Indirect method

ICS
17.160
CCS
Z32
发布
2012-03-31
实施
2012-03-31

This part of ISO 8253 specifies basic methods for speech recognition tests for audiological applications. In order to ensure minimum requirements of precision and comparability between different test procedures including speech recognition tests in different languages, this part of ISO 8253 specifies requirements for the composition, validation and evaluation of speech test materials, and the realization of speech recognition tests. This part of ISO 8253 does not specify the contents of the speech material because of the variety of languages. Furthermore, this part of ISO 8253 also specifies the determination of reference values and fulfilment requirements for the realization and manner of presentation. This part of ISO 8253 specifies procedures and requirements for speech audiometry with the recorded test material being presented by air conduction through an earphone, or from a loudspeaker for sound field audiometry. Methods for using noise either for masking the non-test ear or as a competing sound are described. Some test subjects, for example children, can require amended test procedures not specified in this part of ISO 8253. Specialized tests such as those used for evaluating directional hearing and dichotic hearing are outside the scope of this part of ISO 8253.

Acoustics - Audiometric test methods - Part 3: Speech audiometry

ICS
13.140
CCS
Z32
发布
2012-03-01
实施

Acoustics - Field measurements of airborne and impact sound insulation and of service equipment sound - Survey method - Amendment 1.

ICS
17.140.20;91.120.20;91.140.01
CCS
Z32
发布
2012-03-01
实施
2012-03-15

This part of ISO 14839: a) indicates a typical architecture of an active magnetic bearing (AMB) system so that users can understand which components are likely to comprise such systems and which functions these components provide; b) identifies the primary similarities and differences between AMB systems and conventional mechanical bearings; NOTE This information helps AMB system users better to understand the selection process and implications of transition to AMB technology. identifies the environmental factors that have significant impact on AMB system performance; d) identifies the operating limitations that are unique to AMB systems and defines standardized methods of assessing these limitations; e) identifies typical mechanisms for managing these limitations, especially rotor unbalance; f) provides considerations for the design and performance of touchdown bearing systems; g) defines a typical signal set for provision in an AMB system for proper system/process interface as well as condition and diagnostic monitoring; h) details current best practices for monitoring, operation and maintenance to achieve highest operational system reliability; i) identifies typical fault-handling practices; j) recommends inspection and preventive maintenance processes for AMB systems. c)

Mechanical vibration - Vibration of rotating machinery equipped with active magnetic bearings - Part 4: Technical guidelines

ICS
17.160
CCS
Z32
发布
2012-03
实施

Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for anechoic rooms and hemi-anechoic rooms

ICS
17.140.01
CCS
Z32
发布
2012-03
实施

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

ICS
17.140.20;35.020
CCS
Z32
发布
2012-02-20
实施

Mechanical vibration - Laboratory method for evaluating vehicle seat vibration - Part 1 : basic requirements - Amendment 2.

ICS
17.160
CCS
Z32
发布
2012-02-01
实施
2012-02-25

This National Standard specifies methods for determining the sound power level or sound energy level of a noise source from sound pressure levels measured in a reverberation test room. Measurement and calculation procedures are given for both a direct method and a comparison method of determining the sound power level and the sound energy level.

Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for reverberation test rooms

ICS
17.140.01
CCS
Z32
发布
2012-01-01
实施

This part of ISO 18312 specifies a method for evaluating the vibration power emitted by machines or pipelines (referred to hereinafter as machines) on to supporting structures to which the machines are connected through vibration isolators. This part of ISO 18312 also specifies the method for evaluating the vibration power components emitted in the six degrees of freedom of a Cartesian coordinate system at each joint, i.e. three translations and three rotations. The vibration power is determined by processing the signals from two sets of velocity (or acceleration) transducers mounted at the isolator connection points, one set on the machine side (input) and the other on the foundation side (output). This method is applicable for machines under the assumption that their vibration can be characterized by a stationary random process. The components of emitted vibration power are computed using the cross-spectra of the two sets of velocity in narrow band (or one third-octave) and the dynamic stiffness characteristics of the isolator over the frequency range of interest. The upper frequency limits of this method are established in this part of ISO 18312. This part of ISO 18312 can be used for: evaluating a machinery system from isolator design concept; b) obtaining data for preparation of technical requirements for allowable machine vibration power emission; c) determining appropriate and cost-effective vibration control procedures; d) solving diagnostics issues.

Mechanical vibration and shock - Measurement of vibration power flow from machines into connected support structures - Part 2: Indirect method

ICS
17.160
CCS
Z32
发布
2012-01
实施

Acoustics - Specification of test tracks for measuring noise emitted by road vehicles and their tyres (ISO 10844:2011)

ICS
17.140.30;43.180
CCS
Z32
发布
2012-01
实施

This International Standard provides descriptive statistics, percentiles, of the hearing threshold distribution whose mean is the reference threshold value specified in ISO 226 and ISO 389-7. The mean and percentile thresholds are specified under the following conditions: a) the sound field in the absence of the listener consists of a free progressive plane wave (free field); b) the sound source is directly in front of the listener (frontal incidence); c) the sound signals are pure (sinusoidal) tones; d) the sound pressure level is measured in the absence of the listener at the position where the centre of the listener’s head would be; e) listening is binaural; f) the listeners are otologically normal persons within the age range 18 years to 25 years inclusive. NOTE 1 The th percentile threshold is the value of threshold below which % of the individual thresholds of population fall. The threshold distributions in this International Standard have been derived from the results of comprehensive statistical analyses. See Annex D. NOTE 2 The applicability of the percentiles and the values of parameters given in this International Standard to diffusefield listening conditions has not been examined. They are expected to be applicable to the conditions for the frequencies from 20 Hz to 250 Hz where the threshold difference between free-field and diffuse-field listening conditions is zero as specified in ISO 389-7:2005, Table 1. The percentiles are given in numerical form for the preferred frequencies in the one-third-octave series from 20 Hz to 16000 Hz inclusive, in accordance with ISO 266, and for some intermediate audiometric frequencies. The percentiles are applicable to the assessment of an individual’s hearing in relation to the distribution of hearing thresholds under the above conditions. The percentiles can also be used to evaluate the audibility of low-level noise around hearing threshold. NOTE 3 Annex D. An application example of hearing threshold distribution to noise evaluation can be found in ISO 7779:2010,

Acoustics - Statistical distribution of hearing thresholds of otologically normal persons in the age range from 18 years to 25 years under free-field listening conditions

ICS
13.140
CCS
Z32
发布
2012-01
实施

This part of ISO 18312 specifies a method for evaluating the vibration power emitted by machines or pipelines, referred to hereinafter as machines, under operational conditions on to supporting structures to which the machines are directly connected via bolted joints. This part of ISO 18312 specifies the method for evaluating the vibration power components emitted in the six degrees of freedom of a Cartesian coordinate system at each joint, i.e. three translations and three rotations. The vibration power is determined by processing the signals from force and velocity (or acceleration) transducers mounted on to the bolted joints under operational conditions of interest. This method is applicable for machines under the assumption that their vibration can be characterized by a stationary random process. This direct method assumes that the supporting structures are adequately rigid and, hence, it is not applicable to cases where the foundation or supporting structures are resilient, which will potentially go into a state of resonance within the frequency range of interest. Practical frequency limits of the method are specified in this part of ISO 18312. This part of ISO 18312 can be used in operational conditions for: a) specification of vibration power emission of machines at the (bolted) joints; b) identification of vibration power severity; c) resolving diagnostics issues; d) planning vibration control measures.

Mechanical vibration and shock - Measurement of vibration power flow from machines into connected support structures - Part 1: Direct method

ICS
17.160
CCS
Z32
发布
2012-01
实施



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