EN 60068-2-64:2008
(Main)Environmental testing - Part 2-64: Tests - Test Fh: Vibration, broadband random and guidance
Environmental testing - Part 2-64: Tests - Test Fh: Vibration, broadband random and guidance
IEC 60068-2-64:2008 demonstrates the adequacy of specimens to resist dynamic loads without unacceptable degradation of its functional and/or structural integrity when subjected to the specified random vibration test requirements. Broadband random vibration may be used to identify accumulated stress effects and the resulting mechanical weakness and degradation in the specified performance. This information, in conjunction with the relevant specification, may be used to assess the acceptability of specimens. This standard is applicable to specimens which may be subjected to vibration of a stochastic nature resulting from transportation or operational environments, for example in aircraft, space vehicles and land vehicles. It is primarily intended for unpackaged specimens, and for items in their transportation container when the latter may be considered as part of the specimen itself. However, if the item is packaged, then the item itself is referred to as a product and the item and its packaging together are referred to as a test specimen. This standard may be used in conjunction with IEC 60068-2-47:2005, for testing packaged products. If the specimens are subjected to vibration of a combination of random and deterministic nature resulting from transportation or real life environments, for example in aircraft, space vehicles and for items in their transportation container, testing with pure random may not be sufficient. See IEC 60068-3-8:2003 for estimating the dynamic vibration environment of the specimen and based on that, selecting the appropriate test method. The major changes with regard to the previous edition concern the removal of Method 1 and Method 2, replaced by a single method, and replacement of Annex A with suggested test spectra and removal of Annex C. Also included in this revision is the testing of soft packed specimens. Has the status of a basic safety publication in accordance with IEC Guide 104.
Umgebungseinflüsse - Teil 2-64: Prüfverfahren - Prüfung Fh: Schwingen, Breitbandrauschen und Leitfaden
Essais d'environnement - Partie 2-64: Essais - Essai Fh: Vibrations aléatoires à large bande et guide
La CEI 60068-2-64:2008 a pour objet de démontrer la capacité des spécimens à résister aux charges dynamiques sans dégradation inacceptable de leur intégrité de fonctionnement et/ou de structure, lorsqu'ils sont soumis à des exigences d'essais de vibrations aléatoires spécifiées. L'essai de vibration aléatoire à large bande peut être utilisé pour identifier les effets de contraintes accumulées ainsi que la faiblesse et la dégradation mécaniques résultantes de la performance spécifiée. Ces informations, conjointement avec la spécification particulière, peuvent être utilisées pour évaluer l'acceptabilité des spécimens. Cette norme est applicable à des spécimens qui peuvent être soumis à des vibrations de nature stochastique dues au transport ou à l'environnement rencontré en service, par exemple, à bord d'avions et de véhicules spatiaux ou à bord de véhicules terrestres. Elle est destinée en premier lieu à des spécimens non emballés et à des objets dans leur emballage de transport lorsque celui-ci peut être considéré comme faisant partie du spécimen lui-même. Cependant, si l'article est emballé alors l'article lui-même est désigné comme produit et l'article ainsi que son emballage sont désignés comme spécimen d'essai. Cette norme peut être utilisée conjointement avec la CEI 60068 2 47:2005, pour l'essai des produits emballés. Si les spécimens sont soumis à des vibrations d'une combinaison de nature aléatoire et déterministe résultant du transport ou des environnements de la vie réelle, par exemple à bord d'avions, de véhicules spatiaux et pour des éléments dans leur emballage de transport, les essais purement aléatoires peuvent ne pas être suffisants. Voir la CEI 60068-3-8:2003 pour l'estimation de l'environnement de vibrations dynamiques du spécimen et sur cette base, pour la sélection de la méthode d'essai appropriée. Les modifications principales par rapport à l'édition précédente concernent le retrait de la Méthode 1 et de la Méthode 2, remplacées par une méthode unique, et remplacement de l'Annexe A par des spectres d'essais préconisés et le retrait de l'Annexe C. Aussi inclus dans cette révision, l'essai des spécimens avec emballages mous. A le statut de publication fondamentale de sécurité, conformément au Guide CEI 104.
Okoljski preskusi - 2-64. del: Preskusi - Preskus Fh: Vibracije, naključne širokopasovne, in vodilo (IEC 60068-2-64:2008)
Ta del standarda IEC 60068 izkazuje primernost primerkov glede odpornosti proti dinamičnim obremenitvam brez nesprejemljivega poslabšanja funkcionalne in/ali strukturne celovitosti, kadar so izpostavljeni podanim naključnim zahtevam preskušanja vibracij. Naključne širokopasovne vibracije se lahko uporabijo za določanje nakopičenih učinkov obremenitve ter posledične mehanske šibkosti in poslabšanja podanih lastnosti. Te informacije se lahko skupaj z ustrezno specifikacijo uporabijo za vrednotenje sprejemljivosti primerkov. Ta standard se uporablja za primerke, ki so lahko izpostavljeni stohastičnim vibracijam zaradi transportnih ali obratovalnih okolij, na primer v letalih, vesoljskih plovilih in kopenskih vozilih. Prvotno je namenjen nezapakiranim primerkom in predmetom v njihovem transportnem vsebniku, pri čemer se slednji lahko obravnava kot del samega primerka. Kadar pa je predmet zapakiran, se sam predmet obravnava kot izdelek, izdelek in njegova embalaža pa se obravnavata kot preskušanec. Ta standard se lahko uporablja v povezavi s standardom IEC 60068-2-47:2005 za preskušanje zapakiranih izdelkov. Če so primerki izpostavljeni kombinaciji naključnih in določenih vibracij zaradi transportnih ali dejanskih življenjskih okolij (na primer v letalih, vesoljskih plovilih in za predmete v njihovem transportnem vsebniku), preskušanje zgolj z naključnimi morda ne bo zadostovalo. Glej standard IEC 60068-3-8:2003 za ocenjevanje okolja dinamičnih vibracij vzorca in (na podlagi tega) za izbiro ustrezne preskusne metode. Čeprav je prvotno namenjen elektrotehničnim primerkom, ta standard ni omejen nanje in se lahko poljubno uporablja na drugih področjih (glej dodatek A).
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.QDNOMXþQHUmgebungseinflüsse - Teil 2-64: Prüfverfahren - Prüfung Fh: Schwingen, Breitbandrauschen (digital geregelt) und LeitfadenEssais d'environnement -- Partie 2-64: Essais - Essai Fh: Vibrations aléatoires à large bande et guideEnvironmental testing -- Part 2-64: Tests - Test Fh: Vibration, broadband random and guidance19.040Preskušanje v zvezi z okoljemEnvironmental testingICS:Ta slovenski standard je istoveten z:EN 60068-2-64:2008SIST EN 60068-2-64:2008en01-november-2008SIST EN 60068-2-64:2008SLOVENSKI
STANDARDSIST EN 60068-2-64:20011DGRPHãþD
EUROPEAN STANDARD EN 60068-2-6 NORME EUROPÉENNE
EUROPÄISCHE NORM February 2008
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2008 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60068-2-6:2008 E
ICS 19.040 Supersedes EN 60068-2-6:1995
English version
Environmental testing -
Part 2-6: Tests -
Test Fc: Vibration (sinusoidal) (IEC 60068-2-6:2007)
Essais d'environnement -
Partie 2-6: Essais -
Essai Fc: Vibrations (sinusoïdales) (CEI 60068-2-6:2007)
Umgebungseinflüsse -
Teil 2-6: Prüfverfahren -
Prüfung Fc: Schwingen (sinusförmig)
(IEC 60068-2-6:2007)
This European Standard was approved by CENELEC on 2008-02-01. 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, 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.
EN 60068-2-6:2008
- 2 -
Foreword The text of document 104/439/FDIS, future edition 7 of IEC 60068-2-6, prepared by IEC TC 104, Environmental conditions, classification and methods of test, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60068-2-6 on 2008-02-01. This European Standard supersedes EN 60068-2-6:1995. The major changes with regard to EN 60068-2-6:1995 concern: – the agreed wording from IEC technical committee 104 meeting held in Stockholm:2000 on the testing of soft packages; – reference to the latest version of EN 60068-2-47: Mounting; – simplification of the layout of the standard by replacing some tables with text; – addition of the test report requirements (see Clause 13). 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)
2008-11-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)
2011-02-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 60068-2-6:2007 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 60068-2-64 NOTE
Harmonized as EN 60068-2-64:1994 (not modified). __________
- 3 - EN 60068-2-6:2008
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 60068-1
- 1) Environmental testing - Part 1: General and guidance EN 60068-1 1994 2)
IEC 60068-2-47 - 1) Environmental testing -
Part 2-47: Tests - Mounting of specimens for vibration, impact and similar dynamic tests EN 60068-2-47 2005 2)
IEC 60721-3 Series Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities EN 60721-3 Series
ISO 2041 - 1) Vibration and shock - Vocabulary - -
ISO/IEC 17025 2005 General requirements for the competence of testing and calibration laboratories EN ISO/IEC 17025 2005
1) Undated reference.
2) Valid edition at date of issue.
IEC 60068-2-64Edition 2.0 2008-04INTERNATIONAL STANDARD NORME INTERNATIONALEEnvironmental testing –
Part 2-64: Tests – Test Fh: Vibration, broadband random and guidance
Essais d’environnement –
Partie 2-64: Essais – Essai Fh: Vibrations aléatoires à large bande et guide
INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE WICS 19.040 PRICE CODECODE PRIXISBN 2-8318-9745-9
– 2 – 60068-2-64 © IEC:2008 CONTENTS FOREWORD.4 INTRODUCTION.6
1 Scope.7 2 Normative references.7 3 Terms and definitions.8 4 Requirements for test apparatus.12 4.1 General.12 4.2 Basic motion.12 4.3 Cross-axis motion.13 4.4 Mounting.13 4.5 Measuring systems.13 4.6 Vibration tolerances.14 4.7 Control strategy.17 4.8 Vibration response investigation.17 5 Severities.18 5.1 Test frequency range.18 5.2 RMS value of acceleration.18 5.3 Shape of acceleration spectral density curve.18 5.4 Test duration.19 6 Preconditioning.19 7 Initial measurements and functional performance test.19 8 Testing.19 8.1 General.19 8.2 Initial vibration response investigation.20 8.3 Low-level excitation for equalization prior to testing.20 8.4 Random testing.21 8.5 Final vibration response investigation.21 9 Recovery.21 10 Final measurements and functional performance.21 11 Information to be given in the relevant specification.22 12 Information to be given in the test report.22
Annex A (informative)
Standardized test spectra.24 Annex B (informative)
Guidance.30
Bibliography.34
Figure 1 – Tolerance bands for acceleration spectral density;
initial and final slope (see B.2.3).14 Figure 2 – Time history of stochastically excitation; probability density function with Gaussian (normal) distribution (Example with crest factor = 3, see also 3.14 and
4.6.2).15 Figure 3 – Statistical accuracy of acceleration spectral density versus degrees of freedom for different confidence levels (see also
4.6.3).16 SIST EN 60068-2-64:2008
60068-2-64 © IEC:2008 – 3 –
Table A.1 – Categories for spectrum: transportation.24 Table A.2 – Break points for spectrum: transportation.25 Table A.3 – Categories for spectrum: stationary installation.25 Table A.4 – Break points for spectrum: stationary installation.26 Table A.5 – Categories for spectrum: equipment in wheeled vehicles.27 Table A.6 – Break points for spectrum: equipment in wheeled vehicles.28 Table A.7 – Categories for spectrum: equipment in airplanes and helicopters.29 Table A.8 – Break points for spectrum: equipment in airplanes and helicopters.29
– 4 – 60068-2-64 © IEC:2008 INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
ENVIRONMENTAL TESTING –
Part 2-64: Tests – Test Fh: Vibration,
broadband random and guidance
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 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 60068-2-64 has been prepared by IEC technical committee 104: Environmental conditions, classification and methods of test. This second edition cancels and replaces the first edition, published in 1993, and constitutes a technical revision. The major
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