ISO 3303-1:2020 ゴムまたはプラスチックでコーティングされた布—破裂強度の測定—パート1：鋼球法 | ページ 2

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, 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, 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 ).

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This document was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, Products (other than hoses), in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 248, Textiles and textile products, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO 3303-1:2012), which has been technically revised.

The main changes compared to the previous edition are as follows:

• Clause 2, ISO 7500-1:2018 has been added for the calibration of force measurement system;
• the title of Clause 5 has been changed to “Apparatus and reagents”;
• reagents have been added to Clause 5;
• 5.1, the testing machine has been changed to that of power driven, equipped with an electronic force measurement system and an electronic crosshead displacement monitor.
• 5.2 and bibliography, EN 12332-1 has been deleted as it was replaced with this document;
• Figure 1, the round direction of clamp has been modified;
• 5.6, blotting paper has been added;
• 7.3, the preparation of wet test pieces has been specified.
• 9.1, the recommendations on conditioning for fabrics coated on one side or on both sides have been added separately;
• 10.6, procedure for wet test pieces has been specified.
• A list of all parts in the ISO 3303 series can be found on the ISO website.

Introduction

The bursting strength of coated fabrics is often used as a measure of the multidirectional modulus of the material, as opposed to tensile properties which only provide guidance to the coated-fabric strength in one plane. In addition, bursting strength is more appropriate for testing materials prone to necking, such as coated fabrics with knitted substrates.

The method described in this document, which employs a steel ball, is useful as it represents an impact failure typical of one which would be experienced in service.

1 Scope

This document specifies a method for the determination of the bursting strength of rubber or plastics coated fabrics, using a mechanically operated steel ball.

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.

3 Terms and definitions

No terms and definitions are listed in this document.

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

Bibliography