IEC 60793-1-31:2010

Optical fibres - Part 1-31: Measurement methods and test procedures - Tensile strength

IEC 60793-1-31:2010 provides values of the tensile strength of optical fibre samples and establishes uniform requirements for the mechanical characteristic - tensile strength. 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.

Fibres optiques - Partie 1-31: Méthodes de mesure et procédures d'essai - Résistance à la traction

La CEI 60793-1-31:2010 fournit des valeurs de résistance à la traction d'échantillons de fibre optique et détermine des exigences uniformes pour la caractéristique mécanique de résistance à la traction. La principale modification par rapport à l'édition précédente est l'addition de détails exhaustifs, tels que des exemples d'accrochage de fibres, indiqués dans les Annexes A, B et C.

General Information

• Status: Published
• Publication Date: 11-May-2010
• ICS: 33.180.10 - Fibres and cables
• Technical Committee: SC 86A - Fibres and cables
• Drafting Committee: WG 1 - TC 86/SC 86A/WG 1
• Current Stage: DELPUB - Deleted Publication
• Start Date: 30-Jun-2017
• Completion Date: 06-Feb-2019

Relations

• Revises: IEC 60793-1-31:2001 - Optical fibres - Part 1-31: Measurement methods and test procedures - Tensile strength
• Effective Date: 05-Sep-2023
• Revised: IEC 60793-1-31:2019 - Optical fibres - Part 1-31: Measurement methods and test procedures - Tensile strength
• Effective Date: 05-Sep-2023

Standards Content (Sample)

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

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
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please contact the address below or your local IEC member National Committee for further information.

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International Standards for all electrical, electronic and related technologies.

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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
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 60793-1-31 has been prepared by subcommittee 86A: Fibres and
cables, of IEC technical committee 86: Fibre optics.
This second edition cancels and replaces the first edition published in 2001. This edition
constitutes a technical revision.
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.

60793-1-31 © IEC:2010(E) – 5 –

The text of this standard is based on the following documents:

CDV Report on voting
86A/1285/CDV 86A/1308/RVC
Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts of the IEC 60793-1series, published under the general title Optical fibres –
Measurement methods and test procedures, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

– 6 – 60793-1-31 © IEC:2010(E)

INTRODUCTION
Failure stress distributions can be used to predict fibre reliability in different conditions.

IEC/TR 62048 shows mathematically how this can be done. To complete a given reliability

projection, the tests used to characterize a distribution shall be controlled for the following:

• Population of fibre, e.g., coating, manufacturing period, diameter

• Gauge length, i.e., length of section that is tested

• Stress or strain rates
• Testing environment
• Preconditioning or aging treatments
• Sample size
This method measures the strength of optical fibre at a specified constant strain rate. It is a
destructive test, and is not a substitute for prooftesting.
This method is used for those typical optical fibres for which the median fracture stress is
greater than 3,1 GPa (450 kpsi) in 0,5 m gauge lengths at the highest specified strain rate of
25 %/min. For fibres with lower median fracture stress, the conditions herein have not
demonstrated sufficient precision.
Typical testin
...

IEC 60793-1-31 ®
Edition 2.0 2010-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibres –
Part 1-31: Measurement methods and test procedures – Tensile strength

Fibres optiques –
Partie 1-31: Méthodes de mesure et procédures d'essai – Résistance à la
traction
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

IEC's 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.

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ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.

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publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

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3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: [e-mail]
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.
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in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
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IEC 60793-1-31 ®
Edition 2.0 2010-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibres –
Part 1-31: Measurement methods and test procedures – Tensile strength

Fibres optiques –
Partie 1-31: Méthodes de mesure et procédures d'essai – Résistance à la
traction
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
S
CODE PRIX
ICS 33.180.10 ISBN 978-2-88912-562-3
– 2 – 60793-1-31  IEC:2010
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 – 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
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
OPTICAL FIBRES –
Part 1-31: Measurement methods and test procedures –

Tensile strength
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC s
...