ISO/FDIS 7141

Road vehicles -- Light alloy wheels -- Lateral impact test

Titre manque

General Information

• Status: Published
• ICS: 43.040.50 - Transmissions, suspensions
• Technical Committee: ISO/TC 22/SC 33 - Vehicle dynamics and chassis components
• Drafting Committee: ISO/TC 22/SC 33/WG 5 - Wheels
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 21-Dec-2021
• Completion Date: 21-Dec-2021

RELATIONS

• Revised: ISO 7141:2005 - Road vehicles -- Light alloy wheels -- Impact test
• Effective Date: 10-Jul-2021

Standards Content (sample)

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 7141
ISO/TC 22/SC 33
Road vehicles — Light alloy wheels —
Secretariat: DIN
Lateral impact test
Voting begins on:
2021-12-21
Voting terminates on:
2022-02-15
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 7141:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2021
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ISO/FDIS 7141:2021(E)
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© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

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© ISO 2021 – All rights reserved
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ISO/FDIS 7141:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction .................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ..................................................................................................................................................................................... 1

3 Terms and definitions .................................................................................................................................................................................... 1

4 Test equipment ......................................................................................................................................................................................................1

5 Calibration ..................................................................................................................................................................................................................1

6 Test procedure .......................................................................................................................................................................................................2

7 Failure criteria .......................................................................................................................................................................................................2

Annex A (informative) Velocity sensor set-up and measuring procedure .................................................................. 8

iii
© ISO 2021 – All rights reserved
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ISO/FDIS 7141:2021(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International 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 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, 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 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. 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 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 of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see

www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 33,

Vehicle dynamics and chassis components.

This fourth edition cancels and replaces the third edition (ISO 7141:2005), which has been technically

revised.
The main changes are as follows:
— editorial modifications;
— addition of subclause 5.1 and correspondant Annex A;

— Clause 7 failure criteria, clarification and insertion of examples in Figure 3.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www.iso.org/members.html.
© ISO 2021 – All rights reserved
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ISO/FDIS 7141:2021(E)
Introduction

The purpose of this document is to improve the repetitious accuracy and the application for increasing

wheel diameters and static wheel loads.

Therefore, it is necessary to describe the test rig in more details and include additional descriptions for

failure criteria.
© ISO 2021 – All rights reserved
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FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 7141:2021(E)
Road vehicles — Light alloy wheels — Lateral impact test
1 Scope

This document specifies a laboratory test procedure 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 there is a possibility of the wheel impacting the

kerb, with the purpose of screening and/or quality control of the wheel.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 3911, Wheels and rims for pneumatic tyres — Vocabulary, designation and marking

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 3911 apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Test equipment

4.1 New wheels, fully processed, representative of wheels intended for vehicle application, fitted

with a tyre. Tyres and wheels used in the tests should not be used subsequently on a vehicle.

4.2 Impact loading test machine with a vertically acting steel striker having an impacting face, in

accordance with Figure 1. The striker mass, m, within a tolerance of ±2 %, expressed in kilograms, shall

be as follows:
mW=+06, 180

where W is the maximum vertical static load which is specified by the wheel or the vehicle manufacturer,

expressed in kilograms. In the absence of such specification, the largest value of the load rating of the

tyre which can be applied to the wheel for the application.
4.3
...