EN 60793-1-31:2010

SLOVENSKI STANDARD
01-november-2010
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SIST EN 60793-1-31:2004
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Optical fibres - Part 1-31: Measurement methods and test procedures - Tensile strength
(IEC 60793-1-31:2010)
Lichtwellenleiter - Teil 1-31: Messmethoden und Prüfverfahren - Zugfestigkeit (IEC
60793-1-31:2010)
Fibres optiques - Partie 1-31 : Méthodes de mesure et procédures d’essai - Résistance à
la traction (CEI 60793-1-31:2010)
Ta slovenski standard je istoveten z: EN 60793-1-31:2010
ICS:
33.180.10 2SWLþQDYODNQDLQNDEOL Fibres and cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60793-1-31
NORME EUROPÉENNE
September 2010
EUROPÄISCHE NORM
ICS 33.180.10 Supersedes EN 60793-1-31:2002

English version
Optical fibres -
Part 1-31: Measurement methods and test procedures -
Tensile strength
(IEC 60793-1-31:2010)
Fibres optiques -  Lichtwellenleiter -
Partie 1-31 : Méthodes de mesure Teil 1-31: Messmethoden
et procédures d’essai - und Prüfverfahren -
Résistance à la traction Zugfestigkeit
(CEI 60793-1-31:2010) (IEC 60793-1-31:2010)

This European Standard was approved by CENELEC on 2010-09-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60793-1-31:2010 E
Foreword
The text of document 86A/1285/CDV, future edition 2 of IEC 60793-1-31, prepared by SC 86A, Fibres
and cables, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was
approved by CENELEC as EN 60793-1-31 on 2010-09-01.
This European Standard supersedes EN 60793-1-31:2002.
The main change with respect to the previous edition is the addition of comprehensive details, such as
examples of fibre clamping as given in Annexes A, B and C.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2011-06-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2013-09-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60793-1-31:2010 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 61649 NOTE  Harmonized as EN 61649.
__________
- 3 - EN 60793-1-31:2010
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable 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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 60793-1-20 - Optical fibres - EN 60793-1-20 -
Part 1-20: Measurement methods and test
procedures - Fibre geometry
IEC 60793-1-21 - Optical fibres - EN 60793-1-21 -
Part 1-21: Measurement methods and test
procedures - Coating geometry
IEC 60793-1-31 ®
Edition 2.0 2010-05
INTERNATIONAL
STANDARD
Optical fibres –
Part 1-31: Measurement methods and test procedures – Tensile strength

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
S
ICS 33.180.10 ISBN 978-2-88910-916-6
– 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

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

– 4 – 60793-1-31 © IEC:2010(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRES –
Part 1-31: Measurement methods and test procedures –
Tensile strength
FOREWORD
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