GSO ISO 15484:2013
ISO 15484:2008
مواصفة قياسية خليجية
مركبات الطرق -- مواد احتكاك بطانة المكابح ( الفرامل) -- تعريف المنتج وتأكيد (ضمان) الجودة
Gulf Standard
Road vehicles -- Brake lining friction materials -- Product definition and quality assurance
ICS:
43.040.40

تقديم خليجي

هيئة التقييس لدول مجلس التعاون لدول الخليج العربية هيئة إقليمية تضم في عضويتها أجهزة التقييس الوطنية في الدول الأعضاء ، ومن مهام الهيئة إعداد المواصفات القياسية واللوائح الفنية الخليجية بواسطة لجان فنية متخصصة.

قرر المجلس الفني لهيئة التقييس لدول مجلس التعاون لدول الخليج العربية في الاجتماع الـ (29) بتاريخ 1435/08/05هـ ،الموافق 2013/04/01م اعتماد المواصفة القياسية الخليجية رقم GSO ISO 15484:2013 وعنوانها "مركبات الطرق -- مواد احتكاك بطانة المكابح ( الفرامل) -- تعريف المنتج وتأكيد (ضمان) الجودة" باللغة الانجليزية التي تم دراستها وتبنيها بالمصادقة عبر المسار السريع عن المنظمة الدولية للتقييس رقم ISO 15484:2008 .

Gulf Foreword

GCC Standardization Organization (GSO) is a regional organization which consists of the national standardization bodies of GCC member states. One of GSO main functions is to issue gulf standards and technical regulations through specialized technical committees.

GSO Technical Council in its meeting number (29) held on 05/08/1435H, which corresponds to 01/04/2013, has approved Gulf Standard GSO ISO 15484:2013 titled "Road vehicles -- Brake lining friction materials -- Product definition and quality assurance" in English language which was studied and adopted by endorsement from International Organization for Standardization Standard ISO 15484:2008 through fast track .

INTERNATIONAL

STANDARD

ISO
15484
First edition
2008-08



Road vehicles — Brake lining friction materials — Product definition and quality assurance
Véhicules routiers — Matériaux de friction pour garnitures de freins — Définition du produit et assurance qualité



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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.

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 International 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 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 15484 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 2, Braking systems and equipment.

Introduction

Drum and disc brake friction materials are important functional parts of the wheel brakes. They are pressed against the rotating brake drum or disc by a clamping force applied by the actuating mechanism of the brake during a braking operation. The kinetic energy of the vehicle is thereby largely transformed into heat. The brake pad or lining is of essential importance for the effectiveness and user comfort of the brake system. Disc brake pads consist of the friction material itself, the pad carrier plate and, in some cases, silencing parts, pad wear warning devices and retaining or guiding elements. The friction material is usually permanently bonded to the backing plate by a bonding process in which the friction material is subjected to both heat and pressure. Underlayers can be inserted between the friction material and backing plate to improve bond strength and other properties. Drum brake linings consist of the friction material itself, usually shaped to match the radius of the brake shoe onto which it is subsequently attached. The friction material is usually attached to the supporting brake shoe either by bonding or by the use of rivets. Conventional friction materials consist mainly of fibrous materials, bonding agents, anti-seize agents, metals and other fillers. The friction material type, and any backing plates, anti-noise measures, pad springs and pad wear warning devices, etc., are defined in the relevant figure.

The basic aim of this International Standard is:

to ensure the product is verified and validated during all project phases for transfer into series production;

to increase product reliability and at the same time limit the cost of testing;

to identify the necessary test standards to equally cover brake performance and noise.

Visibility of production spread and the opportunity to select parts for testing from assorted areas of compressibility are the main reasons for the statistical evaluation. The procedures described in this International Standard are based on ISO/TS 16949 and encompass the entire product quality preplanning process, from the definition phase up to the determination of parameters for series production. These are defined in this International Standard as phases 1 to 7.

INTERNATIONAL STANDARD ISO 15484:2008 (E)
Road vehicles — Brake lining friction materials — Product definition and quality assurance

1 Scope

The procedures in this International Standard apply to disc brake pads and drum brake linings for motor vehicles and describe systematic processes for the quality assurance of such brake linings.

In conjunction with tolerance ranges, the test methods and results described in this International Standard permit a rapid assessment of disc brake pads.

Uniform handling of the procedures through various phases ensures that the quality assurance requirements are clearly understood and that a global implementation is possible in the relationship between customers and suppliers.

This International Standard relates to the completed friction material and is applicable during product development to the quality assurance of ongoing series production, focussing on the “component” friction material. It is advisable that tests with apparent “system” character be avoided.

Raw material checks and processing control are outside the scope of this International Standard.

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 referenced document (including any amendments) applies.

ISO 2812-1, Paints and varnishes — Determination of resistance to liquids — Part 1: Immersion in liquids other than water
ISO 6310, Road vehicles — Brake linings — Compressive strain test method
ISO 6312, Road vehicles — Brake linings — Shear test procedure for disc brake pad and drum brake shoe assemblies
ISO/PAS 22574, Road vehicles — Brake linings friction materials — Visual inspection
ISO 26865, Road vehicles — Brake lining friction materials — Standard performance test procedure for commercial vehicles with air brakes
ISO 26866, Road vehicles — Brake lining friction materials — Standard wear test procedure for commercial vehicles with air brakes
ISO 26867, Road vehicles — Brake lining friction materials — Friction behaviour assessment for automative brake systems
ISO 27667, Road vehicles — Brake lining friction materials — Evaluation of corrosion effects on painted backing plates and brake shoes
JASO C458-86, Test procedure of pH for brake linings, pads and clutch facings of automobiles
JIS D 4311, Clutch facings for automobile
JIS D 4421, Method of hardness test for brake linings, pads and clutch facings of automobiles
SAE J2598, Automotive disc brake pad natural frequency and damping test
SAE J2694, Anti-noise shims: T-Pull test 1)
SAE J2707, Wear test procedure on inertia dynamometer for brake friction materials
SAE J2724, Measurement of disc brake friction material underlayer distribution

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

3.1
density
ρ
ratio of the mass to the volume of the friction material under normal conditions
3.2
porosity
P
relative volume proportion of cavities in a material
Note 1 to entry: This includes open or enclosed pores of any size, shape and distribution.
Bibliography
[1]
ISO 611, Road vehicles — Braking of automotive vehicles and their trailers — Vocabulary
[2]
ISO/TS 16949, Quality management systems — Particular requirements for the application of ISO 9001:2000 for automotive production and relevant service part organizations
[3]
JASO C406-00, Passenger car — Braking device — Dynamometer test procedures
[4]
JASO C407-00, Truck and bus — Braking device — Dynamometer test procedures
[5]
JIS D 4417, Test procedure of specific gravity for brake linings and pads of automobiles
[6]
JIS D 4418, Test procedure of porosity for brake linings and pads of automobiles
[7]
SAE J160, Dimensional stability of friction materials when exposed to elevated temperatures
[8]
SAE J379, Gogan hardness of brake lining
[9]
SAE J2115, Brake performance and wear test code — Commercial vehicle inertia dynamometer
[10]
SAE J2521, Disc and drum brake — Dynamometer squeal noise matrix
[11]
SAE J2522, Dynamometer global brake effectiveness
[12]
UNECE Regulation No. 90 (2001), Uniform provisions concerning the approval of replacement brake lining assemblies and drum brake linings for power-driven vehicles and their trailers



ICS 43.040.40
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