1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 3303-1:2012Rubber- or plastics-coatedfabrics Determination ofbursting strengthPart 1: Steel-ball methodBS ISO 3303-1:2012 BRITISH STANDARDNational forewordThis British Sta
2、ndard is the UK implementation of ISO 3303-1:2012.The UK participation in its preparation was entrusted to TechnicalCommittee TCI/69, Footwear, leather and coated fabrics.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purpor
3、t to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 76965 8ICS 59.080.40Compliance with a British Standard cannot confer immunity fromlegal obligations.T
4、his British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 September 2012.Amendments issued since publicationDate Text affectedBS ISO 3303-1:2012 ISO 2012Rubber- or plastics-coated fabrics Determination of bursting strength Part 1: Steel-ball methodSup
5、ports textiles revtus de caoutchouc ou de plastique Dtermination de la rsistance lclatement Partie 1: Mthode utilisant une bille dacierINTERNATIONAL STANDARDISO3303-1First edition2012-08-15Reference numberISO 3303-1:2012(E)BS ISO 3303-1:2012ISO 3303-1:2012(E)ii ISO 2012 All rights reservedCOPYRIGHT
6、PROTECTED DOCUMENT ISO 2012All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO
7、s member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 3303-1:2012ISO 3303-1:2012(E) ISO 2012 All rights reserved iiiContents PageForeword ivInt
8、roduction v1 Scope 12 Normative references . 13 Principle . 14 Apparatus 15 Sampling 26 Preparation of test pieces . 27 Time-interval between manufacture and testing 28 Conditioning of test pieces . 39 Procedure 310 Test report . 3Bibliography . 4BS ISO 3303-1:2012ISO 3303-1:2012(E)ForewordISO (the
9、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
10、 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 electrotechnic
11、al 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 bodi
12、es 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 o
13、r all such patent rights.ISO 3303-1 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, Products (other than hoses).Together with Part 2, it cancels and replaces ISO 3303:1990, which has been split into two parts and at the same time technically revised.ISO
14、3303 consists of the following parts, under the general title Rubber- or plastics-coated fabrics Determination of bursting strength: Part 1: Steel-ball method Part 2: Hydraulic methodiv ISO 2012 All rights reservedBS ISO 3303-1:2012ISO 3303-1:2012(E)IntroductionThe bursting strength of coated fabric
15、s 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 wit
16、h knitted substrates.The method described in this part of ISO 3303, which employs a steel ball, is useful as it represents an impact failure typical of one which would be experienced in service. ISO 2012 All rights reserved vBS ISO 3303-1:2012BS ISO 3303-1:2012Rubber- or plastics-coated fabrics Dete
17、rmination of bursting strength Part 1: Steel-ball method1 ScopeThis part of ISO 3303 specifies a method for the determination of the bursting strength of rubber- or plastics-coated fabrics, using a mechanically operated steel ball.2 Normative referencesThe following referenced documents are indispen
18、sable 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 2231, Rubber- or plastics-coated fabrics Standard atmospheres for conditioning and testing3 P
19、rincipleA test piece is securely clamped between rigid coaxial apertures. A polished steel ball traversing at a fixed speed is pressed against the test piece until failure occurs. The force required to cause failure and the displacement of the polished steel ball at failure are recorded.4 Apparatus4
20、.1 Test machine, power-driven and equipped with a suitable dynamometer. lt shall be capable of maintaining a substantially constant rate of traverse of the moving head during the test and be fitted with an autographic recorder. An inertialess dynamometer (of electrical or optical type, for example)
21、should preferably be used. A pendulum-type inertia dynamometer might in fact give different results because of the effects of friction and inertia. When the use of an inertia dynamometer is unavoidable, information shall be obtained in the following way. The capacity of the machine or the measuring
22、scale selected, when a variable-range machine is involved, shall be such that the bursting force is between 15 % and 85 % of the rated capacity. The accuracy of the machine shall be such that the error in the force measurement as shown and recorded does not exceed 2 % of the force or 0,5 % of the ma
23、ximum of the scale, whichever is the greater.4.2 Bursting attachment (see Figure 1), such that the test piece is held securely by a ring mechanism of internal diameter 45 mm 0,5 mm, with the centre of the test piece pressed against a polished steel ball of diameter 25,2 mm 0,02 mm until the test pie
24、ce ruptures. The direction of motion of the ring-clamp or steel ball shall be at right angles to the plane of the fabric.The clamping surfaces of the upper and lower clamps shall be grooved concentrically such that the crowns of the grooves of one plate fit the grooves of the other. The grooves shal
25、l be not less than 0,8 mm apart and not less than 0,15 mm deep. The grooves shall start no further than 3 mm from the edge of the aperture and shall be rounded to a radius of not greater than 0,4 mm. The lower inner edge of the upper clamp and the upper inner edge of the lower clamp shall be rounded
26、 off to a radius of 0,5 mm.An alternative ball size of 38 mm 0,02 mm (see EN 12332-1) may be used, but the results might not be comparable.INTERNATIONAL STANDARD ISO 3303-1:2012(E) ISO 2012 All rights reserved 1BS ISO 3303-1:2012ISO 3303-1:2012(E)Dimensions in millimetresKey1 upper clamp2 test piece
27、3 lower clamp4 polished steel ballFigure 1 Bursting attachment5 SamplingThe sample shall be taken so that it is as representative as possible of the whole consignment.6 Preparation of test pieces6.1 Take five test pieces across the usable width of the sample (see the note), at least 1 m from the ext
28、remity of the sample, and of sufficient size so that each test piece can be clamped firmly in the clamping system of the test machine. The smaller dimension of each test piece shall be at least 12 mm greater than the outside diameter of the clamping surfaces. Alternatively, the sample may be tested
29、at the requisite locations across its width, avoiding areas that have already been used for a test by at least 20 mm.NOTE The usable width is defined in ISO 2286-1 as that width, excluding the selvedge, which is consistent in its properties, uniformly finished, and free of unacceptable flaws.6.2 The
30、 face of the coated fabric to be tested shall be defined and agreed between the interested parties. The results might not be the same if the opposite face is tested.7 Time-interval between manufacture and testing7.1 For all test purposes, the minimum time between manufacture and testing shall be 16
31、h.2 ISO 2012 All rights reservedBS ISO 3303-1:2012ISO 3303-1:2012(E)7.2 For non-product tests, the maximum time between manufacture and testing shall be four weeks and, for evaluations intended to be comparable, the tests, as far as possible, shall be carried out after the same time-interval.7.3 For
32、 products, whenever possible, the time between manufacture and testing shall not exceed three months. In other cases, tests shall be made within two months of the date of receipt by the customer.8 Conditioning of test piecesCondition the test pieces in one of the standard atmospheres for testing as
33、defined in ISO 2231.When it is required to determine the properties of wet material, immerse the test pieces for 24 h in distilled water containing 1 % ethanol at the chosen standard temperature. Immediately after removal from the water, blot the test piece between two sheets of absorbent paper and
34、test at once.9 Procedure9.1 Unless otherwise agreed (see 6.2), secure the conditioned test piece in the ring-clamp such that the coated side of the fabric faces away from the steel ball.9.2 Move the test piece and steel ball towards each other at a rate of 300 mm/min 30 mm/min until the test piece r
35、uptures under the pressure being applied by the steel ball.9.3 For each test, read from the scale of the test machine the force, in newtons, and the displacement in millimetres to the nearest 0,1 mm of the steel ball required to cause the rupture of the test piece.9.4 Ignore any test results from te
36、st pieces which rupture at the edge of the clamp or slip in the clamp, and repeat the test on another test piece.9.5 Record the mean of the five results obtained.10 Test reportThe test report shall indicate the following particulars:a) a reference to this part of ISO 3303;b) all details necessary fo
37、r the identification of the sample;c) the conditioning method, atmosphere and time of exposure or whether the test pieces were conditioned in the wet state;d) the conditions under which the test was conducted;e) the rupturing force, expressed in newtons, and the displacement of the steel ball at rup
38、ture, expressed in millimetres, given as the mean of the five results;f) the date of the test. ISO 2012 All rights reserved 3BS ISO 3303-1:2012ISO 3303-1:2012(E)Bibliography1 ISO 2286-1, Rubber- or plastics-coated fabrics Determination of roll characteristics Part 1: Methods for determination of len
39、gth, width and net mass2 EN 12332-1, Rubber- or plastics-coated fabrics Determination of bursting strength Part 1: Steel ball method4 ISO 2012 All rights reservedBS ISO 3303-1:2012BS ISO 3303-1:2012ISO 3303-1:2012(E) ISO 2012 All rights reservedICS 59.080.40Price based on 4 pagesThis page deliberate
40、ly left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publications, information and services. It presents the UK view on standards in Europe and at the international level. BSI is incorporated by Royal Charter. British Standards and
41、 other standardisation products are published by BSI Standards Limited.British Standards Institution (BSI)raising standards worldwideBSI389 Chiswick High Road London W4 4AL UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 Standards and PASs are periodically updated by amendment or revision. Users of Bri
42、tish Standards and PASs should make sure that they possess the latest amendments 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 British Standards would inform the Secretary o
43、f the technical committee responsible, the identity of which can be found on the inside frontcover. Similary for PASs, please notify BSI Customer Services.Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001BSI offers BSI Subscribing Members an individual updating service called PLUS which ensures that
44、 subscribers automatically receive the latest editions of British Standards and PASs.Tel: +44 (0)20 8996 7669 Fax: +44 (0)20 8996 7001Email: Buying standardsYou may buy PDF and hard copy versions of standards directly using acredit card from the BSI Shop on the website addition all orders for BSI,
45、international and foreign standards publicationscan be addressed to BSI Customer Services.Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001Email: In response to orders for international standards, BSI will supply the British Standard implementation of the relevant international standard, unless othe
46、rwise requested.Information on standardsBSI provides a wide range of information on national, Europeanand international standards through its Knowledge Centre.Tel: +44 (0)20 8996 7004 Fax: +44 (0)20 8996 7005Email: BSI Subscribing Members are kept up to date with standards developments and receive s
47、ubstantial discounts on the purchase priceof standards. For details of these and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002 Fax: +44 (0)20 8996 7001 Email: Information regarding online access to British Standards and PASs via British Standards Online can be found at
48、 information about British Standards is available on the BSI website at www.bsi- the data, software and documentation set out in all British Standards and other BSI publications are the property of and copyrighted by BSI, or some person or entity that own copyright in the information used (such as the international standardisation bodies) has formally licensed such information to BSI for commerical publication and use. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means
