IEC_60793-1-31-2010.pdf

IEC 60793-1-31Edition 2.0 2010-05INTERNATIONAL STANDARD Optical fibres Part 1-31:Measurement methods and test procedures Tensile strength IEC 60793-1-31:2010(E)LICENSED TO MECON LIMITED-RANCHI/BANGALORE,FOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2010 IEC,Geneva,Switzerland All 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 IEC or IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,please contact the address below or your local IEC member National Committee for further information.IEC Central Office 3,rue de Varemb CH-1211 Geneva 20 Switzerland Email:inmailiec.ch Web:www.iec.ch About the IEC The International Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standards for all electrical,electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sure that you have the latest edition,a corrigenda or an amendment might have been published.?Catalogue of IEC publications:www.iec.ch/searchpub The IEC on-line Catalogue enables you to search by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,withdrawn and replaced publications.?IEC Just Published:www.iec.ch/online_news/justpub Stay up to date on all new IEC publications.Just Published details twice a month all new publications released.Available on-line and also by email.?Electropedia:www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions in English and French,with equivalent terms in additional languages.Also known as the International Electrotechnical Vocabulary online.?Customer Service Centre:www.iec.ch/webstore/custserv If you wish to give us your feedback on this publication or need further assistance,please visit the Customer Service Centre FAQ or contact us:Email:csciec.ch Tel.:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON LIMITED-RANCHI/BANGALORE,FOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 60793-1-31Edition 2.0 2010-05INTERNATIONAL STANDARD Optical fibres Part 1-31:Measurement methods and test procedures Tensile strength INTERNATIONAL ELECTROTECHNICAL COMMISSION SICS 33.180.10 PRICE CODEISBN 978-2-88910-916-6 Registered trademark of the International Electrotechnical Commission LICENSED TO MECON LIMITED-RANCHI/BANGALORE,FOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60793-1-31 IEC:2010(E)CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references.7 3 Apparatus.7 3.1 General.7 3.2 Gripping the fibre at both ends.8 3.3 Sample support.8 3.4 Stretching the fibre.8 3.5 Measuring the force at failure.9 3.6 Environmental control equipment.9 4 Sample preparation.9 4.1 Definition.9 4.2 Sample size and gauge length.9 4.3 Auxiliary measurements.10 4.4 Environment.11 5 Procedure.11 5.1 Preliminary steps.11 5.2 Procedure for a single specimen.11 5.3 Procedure for completing all samples for a given nominal strain rate.11 6 Calculations.12 6.1 Conversion of tensile load to failure stress.12 6.2 Preparation of a Weibull plot.13 6.3 Computation of Weibull parameters.13 7 Results.14 7.1 The following information should be reported for each test:.14 7.2 The following information should be provided for each test:.14 8 Specification information.14 Annex A(informative)Typical dynamic testing apparatus.15 Annex B(informative)Guideline on gripping the fibre.17 Annex C(informative)Guideline on stress rate.21 Bibliography.22 Figure 1 Bimodal tensile strength Weibull plot for a 20 m gauge length test set-up at 5%/min strain rate.10 Figure A.1 Capstan design.15 Figure A.2 Translation test apparatus.15 Figure A.3 Rotating capstan apparatus.16 Figure A.4 Rotating capstan apparatus for long lengths.16 Figure B.1 Gradual slippage.17 Figure B.2 Irregular slippage.17 Figure B.3 Sawtooth slippage.18 Figure B.4 Acceptable transfer function.18 Figure B.5 Typical capstan.19 LICENSED TO MECON LIMITED-RANCHI/BANGALORE,FOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.60793-1-31 IEC:2010(E)3 Figure B.6 Isostatic compression.19 Figure B.7 Escargot wrap.20 Figure C.1 System to control stress rate.21 Figure C.2 Time variation of load and loading speed.21 LICENSED TO MECON LIMITED-RANCHI/BANGALORE,FOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.4 60793-1-31 IEC:2010(E)INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL FIBRES Part 1-31:Measurement methods and test procedures Tensile strength FOREWORD 1)The Inte