1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ICS 83.060 ISBN 0-626-14410-8 SANS 16133:2003Edition 1ISO 6133:1998Edition 2SOUTH AFRICAN NATIONAL STANDARD Rubber and plastics Analysis of multipeak tra
4、ces obtained in determinations of tear strength and adhesion strength Published by Standards South Africa 1 dr lategan road groenkloof ! private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa 2003 This national standard i
5、s the identical implementation of ISO 6133:1998 and is adopted with the permission of the International Organization for Standardization SANS 16133:2003 Edition 1 ISO 6133:1998 Edition 2 Table of changes Change No. Date Scope National Foreword This South African standard was approved by National Com
6、mittee STANSA TC 5140.17, Rubber and rubber products, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. AReference numberISO 6133:1998(E)INTERNATIONALSTANDARDISO6133Second edition1998-03-15Rubber and plastics Analysis of multi-peak traces o
7、btained in determinations oftear strength and adhesion strengthCaoutchouc et plastiques Analyse des tracs multi-pics obtenus lors desdterminations de la rsistance au dchirement et de la force dadhrenceISO 6133:1998(E) ISO 1998All rights reserved. Unless otherwise specified, no part of this publicati
8、on may be reproducedor utilized in any form or by any means, electronic or mechanical, including photocopying andmicrofilm, without permission in writing from the publisher.International Organization for StandardizationCase postale 56 CH-1211 Genve 20 SwitzerlandInternet centraliso.chX.400 c=ch; a=4
9、00net; p=iso; o=isocs; s=centralPrinted in SwitzerlandiiForewordISO (the International Organization for Standardization) is a worldwidefederation of national standards bodies (ISO member bodies). The work ofpreparing International Standards is normally carried out through ISOtechnical committees. Ea
10、ch member body interested in a subject for whicha technical committee has been established has the right to be representedon that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISOcollaborates closely with the International
11、 Electrotechnical Commission(IEC) on all matters of electrotechnical standardization.Draft International Standards adopted by the technical committees arecirculated to the member bodies for voting. Publication as an InternationalStandard requires approval by at least 75 % of the member bodies castin
12、ga vote.International Standard ISO 6133 was prepared by Technical CommitteeISO/TC 45, Rubber and rubber products, Subcommittee SC 2, Physicaland degradation tests.This second edition cancels and replaces the first edition (ISO 6133:1981),which has been technically revised (two additional methods, E
13、and F, havebeen included).INTERNATIONAL STANDARD ISO ISO 6133:1998(E)1Rubber and plastics Analysis of multi-peak traces obtained indeterminations of tear strength and adhesion strength1 ScopeThis International Standard specifies five methods of calculating, after testing, the tear strength and adhes
14、ionstrength of vulcanized rubber or fabrics coated with or adhered to rubber or plastics. The results are calculated bydetermining the median and range of peak values from a graphical plot of force versus time recorded during thetest.A trace for an adhesion strength test or tear strength test may sh
15、ow few or many force peaks, depending on thematerial under investigation. The choice of the method of calculation depends on the number of peaks in the trace.The purpose of this International Standard is to obtain more uniformity in the evaluation and presentation of testresults. It is applicable on
16、ly, however, when specified in another International Standard, i.e. a method of test or aspecification.For other details, such as apparatus, test piece preparation, conditioning, procedure, etc., requirements given in therelevant International Standard shall apply.NOTE 1 In certain cases the methods
17、 of analysis given may not be adequate, for example for peak valuesshowing a trend with time. In cases where the minimum force values are of interest, it is possible to use thesame methods of calculation as when determining from a range of peak values.2 DefinitionsFor the purposes of this Internatio
18、nal Standard, the following definitions apply:2.1 peak: A point at which the slope of a trace changes from positive to negative, e.g.an instantaneous maximumforce.2.2 median: If n measured values are arranged in increasing algebraic order of magnitude and numbered 1 to n,the median of these n values
19、 is:if n is an odd number, the (n + 1) / 2thnumberif n is an even number, the median lies between the n / 2thand n / 2 + 1thvalues and is not defined uniquely.Unless otherwise specified, it may be taken to be the arithmetric mean of these two measured values.2.3 range: The difference between the gre
20、atest and the smallest observed values of observed force peaks.2.4 complete trace: The section of the graphical plot of force versus time between the time at which the first peakoccurs and the time at which the test is terminated.ISO 6133:1998(E)ISO23 ProcedureFrom the force peak values of the trace
21、 for adhesion strength or tear strength, determine the median peak force(see 2.2) and the range (see 2.3) of peak force values by the appropriate method specified in 3.1, 3.2or 3.3.NOTE 2 In applying the methods described in this International Standard, it should be assumed that thetrace being evalu
22、ated is a time record of the variation of force during the period of test.When analysing the trace with a computer, filter the signal to avoid too many small peaks.This can be done byallowing the measured force to drop a certain percentage and allowing a certain time to pass before a new peak isregi
23、stered. It may be necessary to adjust these factors when testing different materials in order to obtain about thesame number of peaks as can be seen on a chart recorder3.1 Method A (for traces having less than five peaks)Determine the median and range of the force peak values in the trace.If there i
24、s only one force peak, consider its value to be the median.3.2 Method B for traces having five to twenty peaks (see figure 1) or where peak values are automaticallycomputedConsider only the peak values of the central 80 % of the complete trace and determine the median peak force andrange of these va
25、lues.NOTE 3 Although it is possible to use this method for traces having more than twenty peaks, it is notrecommended for manual calculations.3.3 Method C for traces having more than twenty peaks which are clearly defined and can be readily measured(see figure 2) and which are not automatically comp
26、utedDraw a series of nine vertical lines by starting at the centre of the complete trace and drawing four more lines oneach side at equal distances of one-tenth of the length of the trace, to the nearest 1 mm. Consider only the peakvalue situated closest to each of the vertical lines. Determine the
27、median peak force and the range of these ninevalues.3.4 Method D for undulating traces (see figure 3)Where the peaks are not clearly defined but form an undulating curve, report only the arithmetic mean value. Reportthis arithmetic mean value as the midpoint between the maximum and the minimum defle
28、ctions of the trace,ignoring the initial rise at the start of the test.3.5 Method E for traces too close for counting (see figures 4)Where there are a large number of peaks which are clearly defined, but which are so close as to render theircounting difficult, report only the arithmetic mean value.
29、Report this arithmetic mean value as the midpoint betweenthe highest and lowest peak, ignoring the initial rise at the start of the test.4 Trace-analysis reportThe trace-analysis report shall include the following information:a) a reference to this International Standard;b) a reference to the test f
30、or which the calculation was made;c) the method of calculation used (A, B, C, D or E);d) the median peak force or, for methods D and E, the mean value;e) the range of peak values;f) the date of the calculation.ISOISO 6133:1998(E)3Figure 1 Analysis of a trace with five to twenty peaksISO 6133:1998(E)ISO4Figure 2 Analysis of a trace with more than twenty clearly defined peaksISOISO 6133:1998(E)5Figure 3 Analysis of an undulating trace (range or median of no significance)Figure 4 Analysis of a trace with a large number of peaks (too close for counting)
