1、September 2016 English price group 21No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 17.140.30; 43.180!%Zsq“2558078
2、www.din.deDIN ISO 10844Acoustics Specification of test tracks for measuring noise emitted by road vehicles and their tyres (ISO 10844:2014),English translation of DIN ISO 10844:2016-09Akustik Anforderungen an Prfstrecken zur Messung der Geruschemission von Straenfahrzeugen und ihren Reifen (ISO 1084
3、4:2014),Englische bersetzung von DIN ISO 10844:2016-09Acoustique Spcification des surfaces dessai pour le mesurage du bruit mis par les vhicules routiers et leurs pneumatiques (ISO 10844:2014),Traduction anglaise de DIN ISO 10844:2016-09SupersedesDIN ISO 10844:2012-01www.beuth.deDocument comprises 5
4、0 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.08.16 A comma is used as the decimal marker. Contents National Annex NA (informative) BibliographyContents PageNational foreword Introduction .1 Scope . 62 Normative references
5、63 Terms and definitions . 64 Requirements of the test track 84.1 Size and geometry 84.2 Surface properties of the propagation area . 124.3 Surface properties of the drive lane 124.4 Conformity tests. 124.5 Homogeneity of surface properties 144.6 Stability with time and maintenance . 144.7 Break-in
6、of the test track 145 Measurement methods and data processing 145.1 Irregularity measurement methods . 145.2 Texture measurements methods 155.3 Acoustic absorption measurement method156 Conformity report 157 Practices from different countries 178 Summary of improvements on the 1994 edition .17Annex
7、A (informative) Calculation of the Expected pass-by noise level difference from texture level variation of road surface (ENDT) 18Annex B (informative) Maintenance and stability of acoustic performance of test surface over time 23Annex C (informative) Examples of test track construction practices .24
8、Annex D (informative) Improvements on ISO 10844:1994 .48Bibliography .49345.DIN ISO 10844:2016-09 2 National foreword This standard (ISO 10844:2014) has been prepared by Technical Committee ISO/TC 22 “Road vehicles and ISO/TC 43/SC 1 “Noise, Joint Working Group WG 42 “Measurement of noise emission (
9、external) from road vehicles”. The responsible German body involved in its preparation was Normenausschuss Akustik, Lrmminderung und Schwingungstechnik im DIN und VDI (Acoustics, Noise Control and Vibration Engineering Standards Committee in DIN and VDI), Working Committee NA 001-01-05 AA Geruschemi
10、ssionsmessungen an Fahrzeugen einschlielich Messungen im Fahrgastraum und am Arbeitsplatz, Subcommittee NA 001-01-05-03 UA Straenfahrzeuge Kenngren. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN shall not be held responsible
11、 for identifying any or all such patent rights. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 362-1 DIN ISO 362-1 ISO 565 DIN ISO 565 ISO 10844:1994 DIN ISO 10844:1997-05 ISO 13472-2 DIN ISO 13472-2 ISO 13473-1 DIN EN ISO 13473-1 ISO
12、13473-3 DIN ISO 13473-3 ISO/TS 13473-4 DIN ISO/TS 13473-4 European Standards designated EN xxx have been published in Germany as DIN EN xxx. Amendments This standard differs from DIN ISO 10844:2012-01 as follows: a) ISO 10844:2014 (containing editorial amendments to the 2011 edition) has been taken
13、over. These amendments include corrections to references to standards in 5.2 and A.2 and a new numbering of the equations in Annex A. Former notes containing specifications or recommendations are now included in the standard text. A reference to a website 21 has been included in the Bibliography. Pr
14、evious editions DIN ISO 10844: 1997-05, 2012-01 DIN ISO 10844:2016-09 3 National Annex NA (informative) Bibliography DIN ISO 362-1, Measurement of noise emitted by accelerating road vehicles Engineering method - Part 1: M and N categories DIN ISO 565, Test sieves Metal wire cloth, perforated metal p
15、late and electroformed sheet Nominal sizes of openings DIN ISO 10844:1997-05, Acoustics Specification of test tracks for the purpose of measuring noise emitted by road vehicles DIN ISO 13472-2, Acoustics Measurement of sound absorption properties of road surfaces in situ Part 2: Spot method for refl
16、ective surfaces DIN EN ISO 13473-1, Characterization of pavement texture by use of surface profiles Part 1: Determination of Mean Profile Depth DIN ISO 13473-3, Characterization of pavement texture by use of surface profiles Part 3: Specifications and classification of profilometers DIN ISO/TS 13473
17、-4, Characterization of pavement texture by use of surface profiles Part 4: Spectral analysis of surface profiles DIN ISO 10844:2016-09 4 IntroductionIn general, the road surface parameters affecting the noise emission of vehicles are the texture and sound absorption characteristics. In addition, th
18、e 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 necessary to specify the r
19、elevant 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 measurement.This Internat
20、ional 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 different test sites and that
21、 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 have the property of ab
22、sorbing 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 properties of the surfac
23、e 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 periodical checking of the
24、surface characteristics.This International Standard is quoted in several International Standards (e.g. the ISO 362 series, ISO 13325).DIN ISO 10844:2016-09 5 Acoustics Specification of test tracks for measuring noise emitted by road vehicles and their tyres1 ScopeThis International Standard specifie
25、s 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 under a wide range of operating conditions including those ap
26、propriate 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 noise and sound are used interchangeably.2 Normative referencesThe
27、 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 referenced document (including any amendments) applies.ISO 362-1,
28、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 surfacesISO 13473-1, Characterization of pavement texture by use of su
29、rface 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 texture by use of surface profiles Part 4: Spectral analysis of
30、 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 and definitions apply.3.1sound absorption coefficientfraction o
31、f 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.DIN ISO 10844:2016-09 6 3.2surface profile3.2.1texture profiletwo-dimensional sample of pavement texture
32、 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 the surfaceNote 1 to entry: It is described by two coordinates: one along the surface plane, called “distance” (the abscissa), and the other i
33、n a direction normal to the surface plane, called “amplitude” (the ordinate).3.2.2irregularitymaximum distance of a surface from the measurement edge of the straightedge between two contact points of the straightedge when placed perpendicular to the surfaceNote 1 to entry: Pavement characteristics a
34、t 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.1.3.2.2.1longitudinal irregularityirregularity in the longitudinal axis of the track3.2.2.2transversal irregularityirregularity in the direction perpendic
35、ular 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 planar surface with the characteristic dimensions along the surface of 50 mm to 500 mm, corresponding to texture wavelengths with one-third-oc
36、tave 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. 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 potho
37、les or “waviness”. It is usually an unwanted characteristic resulting from defects in the surface. Surface roughness with longer wavelengths than megatexture is referred to as irregularity.3.2.5macrotexturedeviation of a pavement surface from a true planar surface with the characteristic dimensions
38、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 wavelengthsNote 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 ha
39、s 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 to obtain suitable water drainage in the tyre or road interface. The macrotexture is obtained by suitable proportioning of the aggregate and mor
40、tar of the mix or by surface finishing techniques.3.2.6microtexturedeviation of a pavement surface from a true planar surface with the characteristic dimension along the surface below 0,5 mm, corresponding to texture wavelengths with one-third-octave bands with centre wavelengths less than or equal
41、to 0,50 mmDIN ISO 10844:2016-09 7 3.3gradient and cross fall3.3.1gradientratio of the height difference and the length 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 transver
42、sal axis of the drive lane3.4propagation areapart of the test track on each side of the drive laneNote 1 to entry: See 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 aggreg
43、ate particles are essentially continuously graded to form an interlocking structureNote 1 to entry: SOURCE: EN 1310813.8mean 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 en
44、try: SOURCE: ISO 13473-1:1997, 3.5.44 Requirements of the test track4.1 Size and geometry4.1.1 SizeThe test track shall consist of two areas, a drive lane and a propagation area. The dimensions shall comply with Figure 1 and Table 1.DIN ISO 10844:2016-09 8 R = 50mKeylsconstruction run-up sectionladr
45、ive lane extension beyond propagation areaCC drive lane centre linePP microphone 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 d
46、efined in Table 1.Table 1 Minimum drive lane extension lengthLengthFor testing 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
47、362-1)la10 m 20 maa20 m is necessary only for the exit side (BB), as defined 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.DIN ISO 10844:2016-09 9
