1、BRITISH STANDARDBS ISO 7141:2005Road vehicles Light alloy wheels Impact testICS 43.040.50g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS ISO 7141
2、:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 26 August 2005 BSI 26 August 2005ISBN 0 580 46270 6National forewordThis British Standard reproduces verbatim ISO 7141:2005 and implements it as the UK national standard.The UK participatio
3、n in its preparation was entrusted to Technical Committee AUE/4, Tyres and wheels for motor vehicles, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international
4、 publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all th
5、e necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on th
6、e interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the ISO title page, The BSI copyright notice displayed in thi
7、s document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date Commentspages ii and iii, a blank page, pages 1 to 4, an inside back cover and a back cover.Reference numberISO 7141:2005(E)INTERNATIONAL STANDARD ISO7141Third edition2005-07-01Road vehicles Light
8、 alloy wheels Impact test Vhicules routiers Roues en alliage lger Essai de choc BS ISO 7141:2005ii iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normall
9、y 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 ISO, also take part in the
10、work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare In
11、ternational Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of
12、 the 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. ISO 7141 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 19, Wheels. This third edition cancels and replaces the second e
13、dition (ISO 7141:1995), the title and scope of which have been modified to include all road applications (not just passenger car applications) for light alloy wheels. BS ISO 7141:2005blank1Road vehicles Light alloy wheels Impact test 1 Scope This International Standard specifies a laboratory test pr
14、ocedure to evaluate the axial (lateral) kerb impact collision properties of a wheel manufactured either wholly or partly of light alloys. It is intended for passenger car applications, and special vehicle applications where the wheel may impact the kerb, with the purpose of screening and/or quality
15、control of the wheel. The vocabulary used is in accordance with ISO 3911. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenc
16、ed document (including any amendments) applies. ISO 3911, Wheels and rims for pneumatic tyres Vocabulary, designation and marking 3 Test equipment 3.1 New wheels, fully processed, representative of wheels intended for vehicle application, fitted with a tyre. Tyres and wheels used in the tests should
17、 not be used subsequently on a vehicle. 3.2 Impact loading test machine with a vertically acting steel striker having an impacting face at least 125 mm wide and at least 375 mm long and sharp edges broken by radius or chamfer, in accordance with Figure 1. The striker mass, m, within a tolerance of 2
18、 %, expressed in kilograms, shall be as follows: 0,6 180mW=+ where W is the maximum static wheel loading, as specified by the wheel and/or vehicle manufacturer, expressed in kilograms. 3.3 Mass of 1 000 kg. 4 Calibration Ensure, by means of a test calibration adapter, that the 1 000 kg mass (3.3) ap
19、plied vertically to the centre of the wheel fixing as shown in Figure 2 causes a deflection of 7,5 mm 0,75 mm when measured at the centre of the beam. BS ISO 7141:20052 5 Test procedure 5.1 Mount the test wheel (3.1) and tyre in the test machine (3.2) such that the impact loading is applied to the r
20、im flange of the wheel. The wheel shall be mounted with its axis at an angle of 13 1 to the vertical with its highest point presented to the striker. The tyre mounted on the test wheel shall be specified by the vehicle manufacturer. If no tyre is specified, the tyre shall be the smallest nominal sec
21、tion width tubeless radial-ply tyre intended for use on that wheel. The inflation pressure shall be that specified by the vehicle manufacturer or, in the absence of such specification, it shall be 200 kPa. The temperature of the test environment shall remain within the range 10 C to 30 C throughout
22、the test period. 5.2 Ensure that the wheel is mounted on the hub fixture with dimensionally representative fixings such as would be used on a vehicle. Manually tighten the fixings to a value or by a method recommended by the vehicle or wheel manufacturer. Because the design of wheel centre members c
23、an vary, test a sufficient number of locations on the wheel rim circumference to ensure that the integrity of the centre members is assessed. Use new wheels each time. 5.3 Ensure that the striker is over the tyre, and overlaps the rim flange by 25 mm 1 mm. Raise the striker to a height of 230 mm 2 m
24、m above the highest part of the rim flange and allow it to fall. 6 Failure criteria The wheel is considered to have failed the test if any of the following apply: a) visible fracture(s) penetrate through a section of the centre member of the wheel assembly; b) the centre member separates from the ri
25、m; c) the tyre loses all air pressure within 1 min. The wheel is not considered to have failed the test by deformation of the wheel assembly or by fractures in the area of the rim section struck by the face plate of the striker. BS ISO 7141:20053Dimensions in millimetres Key 1 steel striker aSharp e
26、dge broken by radius or chamfer. Figure 1 Impact loading test machine BS ISO 7141:20054 Dimensions in millimetres Key 1 steel beam, 200 25 2 1 000 kg calibration load 3 calibration adapter 4 wheel hub adapter 5 4 natural rubber mounts (or equivalent): hardness, 50 Shore; diameter, 51; uncompressed h
27、eight, 27 aAdjust for 13. b13 before calibration. cVertical deflection measured from base. Figure 2 Application of loading to centre of wheel mount BS ISO 7141:2005blankBS ISO 7141:2005BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsi
28、ble for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments
29、 or editions.It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on
30、 the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400.BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards.Buying standardsOrders for all BSI, international and foreign standards publ
31、ications should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: ordersbsi-. Standards are also available from the BSI website at http:/www.bsi-.In response to orders for international standards, it is BSI policy to supply the BSI implementation of those
32、that have been published as British Standards, unless otherwise requested.Information on standardsBSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services ar
33、e also available which give details on all its products and services. Contact the Information Centre. Tel: +44 (0)20 8996 7111. Fax: +44 (0)20 8996 7048. Email: infobsi-.Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price
34、 of standards. For details of these and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002. Fax: +44 (0)20 8996 7001. Email: membershipbsi-.Information regarding online access to British Standards via British Standards Online can be found at http:/www.bsi- information about B
35、SI is available on the BSI website at http:/www.bsi-.CopyrightCopyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be
36、reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI.This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and si
37、ze, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained.Details and advice can be obtained from the Copyright & Licensing Manager. Tel: +44 (0)20 8996 7070. Fax: +44 (0)20 8996 7553. Email: copyrightbsi-.
copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
备案/许可证编号:苏ICP备17064731号-1