ISO INTERNATIONAL STANDARD 13954 First edition 1997-12-15 Plastics pipes and fittings -Peel decohesion test for polyethylene (PE) electrofusion assemblies of nominal outside diameter greater than or equal to 90 mm Tubes et raccords en mat沦res plastiques Ess ai de decoh蕊 ion par pelage des assemblages electrosoudab/es en polyethy 伦 ne (PE) de diametres exterieurs nominaux superieurs ou egaux a 90 mm 二歹务示： L_SO Reference number ISO 13954:1997(E) ISO 13954:1997(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 theInternationalElectrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are a vote. ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 5, General properties of pipes, fittings and valves of plastic materials and their accessoriesTes t methods and basic specifications. @ISO1997 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced microfilm, without permission in writing from the publisher. International Organization for Standardization Casepostale56·CH-1211Geneve20·Switzerland Internet [email protected] X.400 C=ch; a=400net; p=iso; 0=isocs;S=central ii INTERNATIONAL STANDARDISO ISO 13954:1997(E) Plastics pipes and fittings - Peel decohesion test for polyethylene [PE) electrofusion assemblies of nominal outside diameter greater than or egqual to 90 mm Scope 1 This International Standard describes a peel test method for determining the decohesive resistance of polyethylene electrofusion socket assemblies for use in the distribution of fluids. This method is 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IsO 11413:1996, Plastics pipes and fittings Pr eparation of test piece assemblies between a polyethylene (PE) pipe and an electrofusion fitting. 3 Principle The purpose of the test is to assess the cohesion of a PE pipe/electrofusion socket assembly by which cause progressive peeling of the fused interface. The test is conducted at 23 °C ± 2 °C. The decohesive strength of the assembly is characterized by the nature of the failure in the tube wall, the fitting wall or the plane of the fused material and by the percentage decohesion. 4 Apparatus The apparatus shall include the following main elements (see figure 1): 4.1 Tensile-testing machine, capable of pulling at the specified test speed (see clause 7) with sufficient force to separate the test piece components (see clause 5 and figure 4) 4.2 Shackle-type link, as shown in figure 2.