1、BSI Standards PublicationBS ISO 10844:2014Acoustics Specification oftest tracks for measuring noiseemitted by road vehicles andtheir tyresBS ISO 10844:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 10844:2014. Itsupersedes BS ISO 10844:2011 which is withd
2、rawn.The UK participation in its preparation was entrusted to TechnicalCommittee EH/1/2, Transport noise.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are
3、responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 83641 1ICS 17.140.30; 43.020Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of
4、theStandards Policy and Strategy Committee on 31 May 2014.Amendments issued since publicationDate Text affectedBS ISO 10844:2014 ISO 2014Acoustics Specification of test tracks for measuring noise emitted by road vehicles and their tyresAcoustique Spcification des surfaces dessai pour le mesurage du
5、bruit mis par les vhicules routiers et leurs pneumatiquesINTERNATIONAL STANDARDISO10844Third edition2014-05-15Reference numberISO 10844:2014(E)BS ISO 10844:2014ISO 10844:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All rights reserved. Unless otherwise specified, no par
6、t of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member bo
7、dy in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 10844:2014ISO 10844:2014(E) ISO 2014 All rights reserved iiiContents PageForeword ivIntroduction v1
8、Scope . 12 Normative references 13 Terms and definitions . 14 Requirements of the test track 34.1 Size and geometry 34.2 Surface properties of the propagation area . 74.3 Surface properties of the drive lane 74.4 Conformity tests. 74.5 Homogeneity of surface properties 94.6 Stability with time and m
9、aintenance . 94.7 Break-in of the test track 95 Measurement methods and data processing 95.1 Irregularity measurement methods . 95.2 Texture measurements methods 105.3 Acoustic absorption measurement method 106 Conformity report 107 Practices from different countries 128 Summary of improvements on t
10、he 1994 edition .12Annex A (informative) Calculation of the Expected pass-by noise level difference from texture level variation of road surface (ENDT) 13Annex B (informative) Maintenance and stability of acoustic performance of test surface over time 18Annex C (informative) Examples of test track c
11、onstruction practices .19Annex D (informative) Improvements on ISO 10844:1994 .43Bibliography .44BS ISO 10844:2014ISO 10844:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Intern
12、ational Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with
13、 ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives,
14、Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of t
15、he elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations
16、received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISO
17、s adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 43, Acoustics, Subcommittee SC 1, Noise, in collaboration with ISO/TC 22, Road vehicles.This third edition cance
18、ls and replaces the second edition (ISO 10844:2011), of which it constitutes a minor revision.iv ISO 2014 All rights reservedBS ISO 10844:2014ISO 10844:2014(E)IntroductionIn general, the road surface parameters affecting the noise emission of vehicles are the texture and sound absorption characteris
19、tics. In addition, the mechanical impedance and the skid resistance properties of the surface layer can also influence measured noise levels.In order to minimize the variation in rolling sound emission and vehicle sound emission measurements made at different testing locations, it is therefore neces
20、sary to specify the relevant surface properties and recommend carefully the properties of the materials, design, and construction of the test surface.The principal objective of this International Standard is to provide a revised specification of the surface which improves the reproducibility of meas
21、urement.This International Standard is designed in a way that test tracks conforming to this International Standard are compatible with the first edition, but in addition the variability of properties is reduced.It is important that the test provides a high degree of reproducibility between differen
22、t test sites and that the surface design should not only minimize the inter-site variation of tyre or road noise, but should also ensure that the propagation of noise is unaffected by the surface used. This latter consideration precludes the use of road surfaces which have open textures and which ha
23、ve the property of absorbing noise from the power unit and other related sources.In relation to the first edition, this International Standard includes, including more restrictive specifications of the surface and recommendations for the test track construction process and maintenance. The basic pro
24、perties of the surface remain unchanged.The users of this International Standard are encouraged to measure ENDTand to communicate the data to the ISO/TC 43/SC 1 for analysis before the next periodical review.Furthermore, this International Standard recommends a non-destructive test method for period
25、ical checking of the surface characteristics.This International Standard is quoted in several International Standards (e.g. the ISO 362 series, ISO 13325). ISO 2014 All rights reserved vBS ISO 10844:2014BS ISO 10844:2014Acoustics Specification of test tracks for measuring noise emitted by road vehic
26、les and their tyres1 ScopeThis International Standard specifies the essential characteristics of a test surface intended to be used for measuring vehicle and tyre or road noise emissions.The surface design given in this International Standard produces consistent levels of tyre or road sound emission
27、 under a wide range of operating conditions including those appropriate to vehicle sound testing, minimizes inter-site variation, provides minor absorption of the vehicle sound sources, and is consistent with road-building practice.NOTE For the purposes of this International Standard, the terms nois
28、e and sound are used interchangeably.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the refe
29、renced document (including any amendments) applies.ISO 362-1, Measurement of noise emitted by accelerating road vehicles Engineering method Part 1: M and N categoriesISO 13472-2, Acoustics Measurement of sound absorption properties of road surfaces in situ Part 2: Spot method for reflective surfaces
30、ISO 13473-1, Characterization of pavement texture by use of surface profiles Part 1: Determination of mean profile depthISO 13473-3, Characterization of pavement texture by use of surface profiles Part 3: Specification and classification of profilometersISO/TS 13473-4, Characterization of pavement t
31、exture by use of surface profiles Part 4: Spectral analysis of surface profilesEN 13036-7, Road and airfield surface characteristics Test methods Part 7: Irregularity measurement of pavement courses: the straightedge test3 Terms and definitionsFor the purposes of this document, the following terms a
32、nd definitions apply.3.1sound absorption coefficientfraction of the sound power incident on the test object that is absorbed within the test object for a plane wave at normal incidenceNote 1 to entry: Expressed as a percentage, it is called sound absorption.INTERNATIONAL STANDARD ISO 10844:2014(E) I
33、SO 2014 All rights reserved 1BS ISO 10844:2014ISO 10844:2014(E)3.2surface profile3.2.1texture profiletwo-dimensional sample of pavement texture generated if a sensor, such as the tip of a needle or a laser spot, continuously touches or shines on the pavement surface while it is moved along a line on
34、 the surfaceNote 1 to entry: It is described by two coordinates: one along the surface plane, called “distance” (the abscissa), and the other in a direction normal to the surface plane, called “amplitude” (the ordinate).3.2.2irregularitymaximum distance of a surface from the measurement edge of the
35、straightedge between two contact points of the straightedge when placed perpendicular to the surfaceNote 1 to entry: Pavement characteristics at longer wavelengths than 0,5 m are considered to be above that of texture and are referred to here as irregularity.Note 2 to entry: See Figure C.1.3.2.2.1lo
36、ngitudinal irregularityirregularity in the longitudinal axis of the track3.2.2.2transversal irregularityirregularity in the direction perpendicular to the axis of the track3.2.3straightedgedevice used for measuring the deviation from a plane3.2.4megatexturedeviation of a pavement surface from a true
37、 planar surface with the characteristic dimensions along the surface of 50 mm to 500 mm, corresponding to texture wavelengths with one-third-octave bands including the range of 63 mm to 500 mm of centre wavelengthsNote 1 to entry: Peak-to-peak amplitudes normally vary in the range of 0,1 mm to 50 mm
38、. This type of texture is the texture which has wavelengths in the same order of size as a tyre or road interface and is often created by potholes or “waviness”. It is usually an unwanted characteristic resulting from defects in the surface. Surface roughness with longer wavelengths than megatexture
39、 is referred to as irregularity.3.2.5macrotexturedeviation of a pavement surface from a true planar surface with the characteristic dimensions along the surface of 0,5 mm to 50 mm, corresponding to texture wavelengths with one-third-octave bands including the range of 0,63 mm to 50 mm of centre wave
40、lengthsNote 1 to entry: Peak-to-peak amplitudes can normally vary in the range of 0,1 mm to 20 mm. This type of texture is the texture which has wavelengths of the same order of size as tyre tread elements in the tyre or road interface. Surfaces are normally designed with a sufficient macrotexture t
41、o obtain suitable water drainage in the tyre or road interface. The macrotexture is obtained by suitable proportioning of the aggregate and mortar of the mix or by surface finishing techniques.3.2.6microtexturedeviation of a pavement surface from a true planar surface with the characteristic dimensi
42、on along the surface below 0,5 mm, corresponding to texture wavelengths with one-third-octave bands with centre wavelengths less than or equal to 0,50 mm2 ISO 2014 All rights reservedBS ISO 10844:2014ISO 10844:2014(E)3.3gradient and cross fall3.3.1gradientratio of the height difference and the lengt
43、h measured along the longitudinal axis of the drive lane, expressed as a percentage3.3.2cross fallheight difference expressed as a percentage of the length measured along the transversal axis of the drive lane3.4propagation areapart of the test track on each side of the drive laneNote 1 to entry: Se
44、e Figure 1.3.5drive lanepart of the test track where the vehicle runs3.6stiffnessratio of a normal force and resulting displacement3.7dense asphalt concreteasphalt in which the aggregate particles are essentially continuously graded to form an interlocking structureNote 1 to entry: SOURCE: EN 131081
45、3.8mean profile depthaverage value of the height difference between the profile and a horizontal line through the highest peak (the peak level) over a 100-mm long baselineNote 1 to entry: SOURCE: ISO 13473-1:1997, 3.5.44 Requirements of the test track4.1 Size and geometry4.1.1 SizeThe test track sha
46、ll consist of two areas, a drive lane and a propagation area. The dimensions shall comply with Figure 1 and Table 1. ISO 2014 All rights reserved 3BS ISO 10844:2014ISO 10844:2014(E)R = 50mKeylsconstruction run-up sectionladrive lane extension beyond propagation areaCC drive lane centre linePP microp
47、hone linelight-grey area propagation areadark-grey area with dotted linedrive laneFigure 1 Size of the test trackA drive lane with a length of laand width of at least 3,0 m that is centred around line PP. The value of lais defined in Table 1.Table 1 Minimum drive lane extension lengthLengthFor testi
48、ng tyres, passenger cars, motorcy-cles, light duty vehicles, and trucksFor long vehicles with rear engine, having a distance of more than10 m between the reference point and the front axle (reference point as defined in ISO 362-1)la10 m 20 maa20 m is necessary only for the exit side (BB), as defined
49、 in ISO 362-1, of the test track according to the purpose of this requirement.For the stabilization of the laying process, a minimum length of ls= 60 m is recommended on at least one side.The propagation area shall extend at least 10 m from the centre of the drive lane and at least 10 m at both sides of the line PP.4 ISO 2014 All rights reservedBS ISO 10844:2014ISO 10844:2014(E)Within a radius of 50 m around the centre of the track, the space shall be free of large reflecting objects such as fences, rocks, br
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