SIST EN 60068-2-57:2013

Environmental testing - Part 2-57: Tests - Test Ff: Vibration - Time-history and sine-beat method

This part of IEC 60068 provides a standard procedure for determining, by the time-history and sine-beat methods, the ability of a specimen to withstand specified severities of transient vibration.

Umgebungseinflüsse - Teil 2-57: Prüfungen - Prüfung Ff: Schwingen - Zeitlaufverfahren und Sinusimpulse

Essais d'environnement -- Partie 2-57: Essais – Essai Ff: Vibrations – Méthode par accélérogrammes et sinusoïdes modulées

La CEI 60068-2-57:2013 a pour objet de donner des règles d'exécution normalisées pour déterminer l'aptitude d'un spécimen à supporter des sévérités données de vibrations de courte durée, au moyen des méthodes par accélérogrammes et sinusoïdes modulées. Cette troisième édition annule et remplace la deuxième édition, publiée en 1999. Elle remplace également la CEI 60068-2-59:1990, qui sera retirée.  Cette édition inclut seulement des modifications techniques mineures suivantes par rapport à l'édition précédente:  - combinaison éditoriale de la CEI 60068-2-57 et de la CEI 60068-2-59;  - le titre a été modifié afin d'inclure la méthode d'essai sinusoïde modulé.

Okoljski preskusi - 2-57. del: Preskusi - Preskus Ff: Vibracije - Časovno-zgodovinska metoda in metoda s sinusnimi udarci

V tem delu standarda IEC 60068 so podani standardni postopek za ugotavljanje vzdržljivosti vzorca na določene stopnje prehodnih vibracij s časovno-zgodovinsko metodo in metodo s sinusnimi udarci.

General Information

• Status: Published
• Publication Date: 02-Sep-2013
• ICS: 19.040 - Environmental testing
• Technical Committee: I09 - Imaginarni 09
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 27-Aug-2013
• Due Date: 01-Nov-2013
• Completion Date: 03-Sep-2013
• Ref Project: EN 60068-2-57:2013 - Environmental testing - Part 2-57: Tests - Test Ff: Vibration - Time-history and sine-beat method

Relations

• Revised: SIST EN 60068-2-57:2001 - Environmental testing -- Part 2-57: Tests - Test Ff: Vibration - Time-history method
• Effective Date: 21-Sep-2010
• Replaces: SIST EN 60068-2-59:2001 - Environmental testing -- Part 2: Test methods - Test Fe: Vibration - Sine beat method
• Effective Date: 28-Jan-2023
• Replaces: SIST EN 60068-2-57:2001 - Environmental testing -- Part 2-57: Tests - Test Ff: Vibration - Time-history method
• Effective Date: 28-Jan-2023
• Replaces: SIST EN 60068-2-57:2001 - Environmental testing -- Part 2-57: Tests - Test Ff: Vibration - Time-history method
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60068-2-57:2013
01-oktober-2013
1DGRPHãþD
SIST EN 60068-2-57:2001
SIST EN 60068-2-59:2001
2NROMVNLSUHVNXVLGHO3UHVNXVL3UHVNXV)I9LEUDFLMHýDVRYQR
]JRGRYLQVNDPHWRGDLQPHWRGDVVLQXVQLPLXGDUFL
Environmental testing - Part 2-57: Tests - Test Ff: Vibration - Time-history and sine-beat
method
Umgebungseinflüsse - Teil 2-57: Prüfungen - Prüfung Ff: Schwingen - Zeitlaufverfahren
und Sinusimpulse
Essais d'environnement -- Partie 2-57: Essais – Essai Ff: Vibrations – Méthode par
accélérogrammes et sinusoïdes modulées
Ta slovenski standard je istoveten z: EN 60068-2-57:2013
ICS:
19.040 Preskušanje v zvezi z Environmental testing
okoljem
SIST EN 60068-2-57:2013 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60068-2-57:2013

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SIST EN 60068-2-57:2013

EUROPEAN STANDARD
EN 60068-2-57

NORME EUROPÉENNE
August 2013
EUROPÄISCHE NORM

ICS 19.040 Supersedes EN 60068-2-57:2000, EN 60068-2-59:1993


English version


Environmental testing -
Part 2-57: Tests -
Test Ff: Vibration -
Time-history and sine-beat method
(IEC 60068-2-57:2013)


Essais d'environnement -  Umgebungseinflüsse -
Partie 2-57: Essais - Teil 2-57: Prüfungen -
Essai Ff: Vibrations - Prüfung Ff: Schwingen -
Méthode par accélérogrammes et Zeitlaufverfahren und Sinusimpulse
sinusoïdes modulées (IEC 60068-2-57:2013)
(CEI 60068-2-57:2013)





This European Standard was approved by CENELEC on 2013-05-30. 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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre 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, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey 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


© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60068-2-57:2013 E

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SIST EN 60068-2-57:2013
EN 60068-2-57:2013 - 2 -

Foreword
The text of document 104/595/FDIS, future edition 3 of IEC 60068-2-57, prepared by IEC TC 104
"Environmental conditions, classification and methods of test" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN 60068-2-57:2013.
The following dates are fixed:
• latest date by which the document has (dop) 2014-02-28
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2016-05-30
• latest date by which the national
standards conflicting with the

document have to be withdrawn

This document supersedes EN 60068-2-57:2000 and EN 60068-2-59:1993.
EN 60068-2-57:2013 includes the following significant technical changes with respect to
EN 60068-2-57:2000 and EN 60068-2-59:1993:
– editorially combines EN 60068-2-57 and EN 60068-2-59;
– the title has been modified to include a sine beat method.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
Endorsement notice
The text of the International Standard IEC 60068-2-57:2013 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60068-2-59:1990 NOTE  Harmonised as EN 60068-2-59:1993 (not modified).
IEC 60068-2-81 NOTE  Harmonised as EN 60068-2-81.
ISO/IEC 17025 NOTE  Harmonised as EN ISO/IEC 17025.

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SIST EN 60068-2-57:2013
- 3 - EN 60068-2-57:2013
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. 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 60068 Series Environmental testing EN 60068 Series


IEC 60068-1 - Environmental testing - EN 60068-1 -
Part 1: General and guidance


IEC 60068-2-6 2007 Environmental testing - EN 60068-2-6 2008
Part 2-6: Tests - Test Fc: Vibration
(sinusoidal)


IEC 60068-2-47 2005 Environmental testing - EN 60068-2-47 2005
Part 2-47: Tests - Mounting of specimens for
vibration, impact and similar dynamic tests


IEC 60068-2-64 2008 Environmental testing - EN 60068-2-64 2008
Part 2-64: Tests - Test Fh: Vibration,
broadband random and guidance


IEC 60068-3-3 1991 Environmental testing - EN 60068-3-3 1993
Part 3: Guidance - Seismic test methods for
equipments


IEC 60068-3-8 - Environmental testing - EN 60068-3-8 -
Part 3-8: Supporting documentation and
guidance - Selecting amongst vibration tests

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SIST EN 60068-2-57:2013

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SIST EN 60068-2-57:2013



IEC 60068-2-57

®


Edition 3.0 2013-04




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE











Environmental testing –

Part 2-57: Tests – Test Ff: Vibration – Time-history and sine-beat method




Essais d'environnement –

Partie 2-57: Essais – Essai Ff: Vibrations – Méthode par accélérogrammes et

sinusoïdes modulées















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

PRICE CODE
INTERNATIONALE

CODE PRIX X


ICS 19.040 ISBN 978-2-83220-745-1



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 60068-2-57:2013
– 2 – 60068-2-57 © IEC:2013
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Test requirements and associated parameters . 15
4.1 General . 15
4.2 Requirements for testing . 15
4.3 Vibration response investigation . 16
4.3.1 General . 16
4.3.2 Basic motion . 16
4.3.3 Transverse motion . 16
4.3.4 Rotational motion . 16
4.3.5 Measuring points . 16
4.3.6 Vibration amplitude tolerances . 17
4.3.7 Frequency tolerances . 17
4.3.8 Sweeping . 17
4.3.9 Damping ratio . 17
4.4 Time-history testing . 18
4.4.1 Basic motion . 18
4.4.2 Transverse motion . 18
4.4.3 Rotational motion . 18
4.4.4 Tolerance zone for the required response spectrum . 18
4.4.5 Frequency range . 19
4.5 Sine-beat testing . 19
4.5.1 General description . 19
4.5.2 Vibration amplitude tolerances . 19
4.5.3 Test frequency tolerances . 19
4.5.4 Transverse motion . 19
4.6 Mounting . 20
5 Severities . 20
5.1 General . 20
5.2 Time history . 20
5.3 Test frequency range. 21
5.4 Required response spectrum . 21
5.5 Number and duration of time-histories . 21
5.5.1 Number of time histories . 21
5.5.2 Time-history duration . 21
5.5.3 Duration of the strong part of the time history . 22
5.5.4 Number of high stress cycles . 22
5.6 Sine-beat test level . 23
5.6.1 General . 23
5.6.2 Test frequency determination . 29
5.6.3 Sine-beat test wave . 29
5.6.4 Number of cycles in the sine beat . 29
5.6.5 Modulating frequency . 30

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SIST EN 60068-2-57:2013
60068-2-57 © IEC:2013 – 3 –
5.6.6 Number of sine beats. 31
5.6.7 High-stress low-cycle fatigue effects . 31
6 Preconditioning . 31
7 Initial measurements . 31
8 Testing . 31
8.1 General . 31
8.2 Vibration response investigation . 31
8.3 Time-history testing . 32
8.4 Sine-beat testing . 32
8.5 Multi-axis testing . 32
8.5.1 General . 32
8.5.2 Single axis testing . 32
8.5.3 Biaxial testing . 32
8.5.4 Triaxial testing . 32
9 Intermediate measurements . 33
10 Recovery . 33
11 Final measurements . 33
12 Information to be given in the relevant specification. 33
13 Information to be given in the test report . 34
Annex A (informative) Guidance for time-history and sine-beat methods . 35
Bibliography . 41

Figure 1 – Sequence of five sine beats with five cycles . 7
Figure 2 – Number of cycles per sine beat . 13
Figure 3 – Typical time history . 14
Figure 4 – Typical logarithmic plot of a required response spectrum, test response
spectrum and tolerance zone . 14
Figure 5 – Typical response of an oscillator excited by a specific time history during a
test . 22
Figure 6 – Recommended test level with crossover frequency at 0,8 Hz . 24
Figure 7 – Recommended test level with crossover frequency at 1,6 Hz . 26
Figure 8 – Recommended test level with crossover frequency at 8 Hz . 28
Figure 9 – Amplification factors of different sine beats, continuous sine and a typical
natural time-history . 30
Figure A.1 – Recommended shape of a required response spectrum in generalized
form . 37
Figure A.2 – Standardized presentation of matched sine beats of acceleration, velocity
and displacement (five cycles within the sine beat of acceleration) . 40

Table 1 – Comparison of tolerances . 15
Table 2 – Recommended test frequency ranges . 21
Table 3 – Recommended test levels with a crossover frequency of 0,8 Hz (see Figure 6) . 23
Table 4 – Recommended test levels with a crossover frequency of 1,6 Hz (see Figure 7) . 25
Table 5 – Recommended test levels with a crossover frequency of 8 Hz (see Figure 8) . 27

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SIST EN 60068-2-57:2013
– 4 – 60068-2-57 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________

ENVIRONMENTAL TESTING –

Part 2-57: Tests – Test Ff: Vibration –
Time-history and sine-beat method

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 60068-2-57 has been prepared by IEC technical committee 104:
Environmental conditions, classification and methods of test.
This third edition cancels and replaces the second edition, published in 1999. It also replaces
IEC 60068-2-59:1990, which will be withdrawn.
This edition includes only minor technical changes with respect to the previous edition:
– editorially combines IEC 60068-2-57 and IEC 60068-2-59;
– the title has been modified to include a sine beat method.
The text of this standard is based on the following documents:
FDIS Report on voting
104/595/FDIS 104/612/RVD

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SIST EN 60068-2-57:2013
60068-2-57 © IEC:2013 – 5 –

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 the parts in the IEC 60068 series, published under the general title Environmental
testing, can be found on the IEC website.
This standard is to be used in conjunction with IEC 60068-1.
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.

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SIST EN 60068-2-57:2013
– 6 – 60068-2-57 © IEC:2013
INTRODUCTION
This part of IEC 60068 details methods for testing components, equipment and other
electrotechnical products (hereinafter referred to as “specimens”) which in service can be
subjected to random or oscillating type dynamic forces of short duration, typical examples of
which are the stresses induced in equipment as a result of earthquakes, explosions and
certain phases of transportation, or by transient, short time vibration in machinery.
The characteristics of these forces and the damping of the specimen may be such that the
vibration response of the specimen will not reach a steady-state condition.
The time-history test consists, after any preliminary vibration response investigation with
sinusoidal or random vibration, in subjecting the specimen to a vibration (acceleration,
velocity or displacement) the time history being specified by a response spectrum with
characteristics simulating the effects of the dynamic forces.
A time history may be developed or obtained from
– a natural event (natural time history),
– a random sample


artificial time history.
– a synthesized signal 
In general, to adapt to the required testing severity, some modification is necessary.
The use of a time history allows a single test wave to envelop a broadband response
spectrum.
It is possible for all the modes of the structure in the excitation axis (or axes) to be excited at
the same time and consequently the stresses derived from the combined effects of the
coupled modes are generally taken into account.
In the sine beat test, the specimen is excited at fixed frequencies with a preset number of sine
beats (see Figure 1). These fixed test frequencies are predetermined test frequencies, or
critical frequencies identified by means of a sinusoidal vibration test (IEC 60068-2-6), or both.
Pauses are provided between the individual sine beats in order to allow decay of the free
response of the specimen.
In Clause 12 specification writers will find a list of details to be considered for inclusion in
specifications and, in Annex A, guidance giving necessary extra information.

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60068-2-57 © IEC:2013             – 7 –
SIST EN 60068-2-57:2013


st nd rd th th
1 sine beat Pause 2 sine beat Pause 3 sine beat Pause 4 sine beat Pause 5 sine beat
f
Test frequency
1
f
Modulating frequency Time
Five cycles
IEC  907/13

Figure 1 – Sequence of five sine beats with five cycles


Vibration amplitude

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SIST EN 60068-2-57:2013
– 8 – 60068-2-57 © IEC:2013
ENVIRONMENTAL TESTING –

Part 2-57: Tests – Test Ff: Vibration –
Time-history and sine-beat method



1 Scope
This part of IEC 60068 provides a standard procedure for determining, by the time-history and
sine-beat methods, the ability of a specimen to withstand specified severities of transient
vibration.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60068 (all parts), Environmental testing
IEC 60068-1, Environmental testing – Part 1: General and guidance
IEC 60068-2-6:2007, Environmental testing – Part 2-6: Tests – Test Fc: Vibration (sinusoidal)
IEC 60068-2-47:2005, Environmental testing – Part 2-47: Tests – Mounting of specimens for
vibration, impact and similar dynamic tests
IEC 60068-2-64:2008, Environmental testing – Part 2-64: Tests –Vibration, broadband random
and guidance
IEC 60068-3-3:1991, Environmental testing – Part 3: Guidance – Seismic test methods for
equipments
IEC 60068-3-8, Environmental testing – Part 3-8: Supporting documentation and guidance –
Selecting amongst vibration tests
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
NOTE Some of the following terms can be found in ISO 2041, IEC 60068-1 or in IEC 60068-2-6. Where, for the
convenience of the reader, a definition from one of those sources is included here, it is indicated.
3.1
critical frequency
frequency at which
– malfunctioning and/or deterioration of performance of the specimen which are dependent
on vibration are exhibited, and/or
– mechanical resonances and/or other response effects occur, for example chatter
[SOURCE: IEC 60068-2-6:2007, definition 3.9]

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SIST EN 60068-2-57:2013
60068-2-57 © IEC:2013 – 9 –
3.2
crossover frequency
frequency at which the characteristic of a vibration changes from one relationship to another
Note 1 to entry: For example, a crossover frequency may be that frequency at which the test vibration amplitude
changes from a constant displacement value versus frequency to a constant acceleration value versus frequency.
[SOURCE: ISO 2041:2007, definition 2.118]
3.3
damping
progressive reduction of the amplitude with time due to the dissipation of energy in a system
Note 1 to entry: In practice, damping depends on many parameters, such as the structural system, mode of
vibration, strain, applied forces, velocity, materials, joint slippage, etc.
[SOURCE: IEC 60068-2-6:2007, definition 3.8, modified – original text reads "generic term
ascribed to the numerous energy dissipation mechanisms in a system"; Note remains same]
3.4
viscous damping
damping that occurs when an element or a part of a vibration system is resisted by a force the
magnitude of which is proportional to the velocity of the element and the direction of which is
opposite to the direction of the velocity
3.5
critical damping
C
c
minimum viscous damping that will allow a displaced system to return to its initial position
without oscillation
3.6
damping ratio
ratio of actual viscous damping to critical damping in a system with viscous damping
Note 1 to entry: The damping ratio (DR) can be calculated using the formula DR = C/C where C is actual viscous
C
damping value and C is the critical damping.
C
Note 2 to entry: This parameter is normally expressed as a percentage value.
3.7
signal tolerance
 NF 
signal tolerance T = × 100 (per cent)
 −1
F
 
where
NF is the r.m.s value of the unfiltered signal;
F is the r.m.s value of the filtered signal.
Note 1 to entry: This parameter applies to whichever signal, i.e. acceleration, velocity or displacement, is being
used to control the test (see A.2.2 of IEC 60068-2-6:2007)
3.8
fixing point
part of the specimen in contact with the fixture or vibration table at a point where the
specimen is
...