1、IEC 60068-2-64Edition 2.0 2008-04INTERNATIONALSTANDARDNORMEINTERNATIONALEEnvironmental testing Part 2-64: Tests Test Fh: Vibration, broadband random and guidance Essais denvironnement Partie 2-64: Essais Essai Fh: Vibrations alatoires large bande et guide IEC60068-2-64:2008 INTRANORMES pour : ALSTOM
2、 TRANSPORTapapaapapaapapapaapapapapaapapapap THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 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 pho
3、tocopying 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 l
4、ocal IEC member National Committee for further information. Droits de reproduction rservs. Sauf indication contraire, aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque forme que ce soit et par aucun procd, lectronique ou mcanique, y compris la photocopie et les microf
5、ilms, sans laccord crit de la CEI ou du Comit national de la CEI du pays du demandeur. Si vous avez des questions sur le copyright de la CEI ou si vous dsirez obtenir des droits supplmentaires sur cette publication, utilisez les coordonnes ci-aprs ou contactez le Comit national de la CEI de votre pa
6、ys de rsidence. IEC Central Office 3, rue de Varemb CH-1211 Geneva 20 Switzerland Email: inmailiec.chWeb: 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
7、 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/searchpubThe IEC
8、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 It also gives information on projects, withdrawn and replaced publications.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/justpubStay up to date on all new IEC publications. Just Published d
9、etails twice a month all new publications released. Available on-line and also by email. Electropedia: www.electropedia.orgThe 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 additio
10、nal languages. Also known as the International Electrotechnical Vocabulary online. Customer Service Centre: www.iec.ch/webstore/custservIf 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.chTel
11、.: +41 22 919 02 11 Fax: +41 22 919 03 00 A propos de la CEI La Commission Electrotechnique Internationale (CEI) est la premire organisation mondiale qui labore et publie des normes internationales pour tout ce qui a trait llectricit, llectronique et aux technologies apparentes. A propos des publica
12、tions CEI Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possdez ldition la plus rcente, un corrigendum ou amendement peut avoir t publi. Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htmLe Catalogue en-ligne de la CEI vous
13、 permet deffectuer des recherches en utilisant diffrents critres (numro de rfrence, texte, comit dtudes,). Il donne aussi des informations sur les projets et les publications retires ou remplaces. Just Published CEI: www.iec.ch/online_news/justpubRestez inform sur les nouvelles publications de la CE
14、I. Just Published dtaille deux fois par mois les nouvelles publications parues. Disponible en-ligne et aussi par email. Electropedia: www.electropedia.orgLe premier dictionnaire en ligne au monde de termes lectroniques et lectriques. Il contient plus de 20 000 termes et dfinitions en anglais et en f
15、ranais, ainsi que les termes quivalents dans les langues additionnelles. Egalement appel Vocabulaire Electrotechnique International en ligne. Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htmSi vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questi
16、ons, visitez le FAQ du Service clients ou contactez-nous:Email: csciec.chTl.: +41 22 919 02 11 Fax: +41 22 919 03 00 INTRANORMES pour : ALSTOM TRANSPORTapapaapapaapapapaapapapapaapapapapIEC 60068-2-64Edition 2.0 2008-04INTERNATIONALSTANDARDNORMEINTERNATIONALEEnvironmental testing Part 2-64: Tests Te
17、st Fh: Vibration, broadband random and guidance Essais denvironnement Partie 2-64: Essais Essai Fh: Vibrations alatoires large bande et guide INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE WICS 19.040 PRICE CODECODE PRIXISBN 2-8318-9745-9INTRANORMES pour : ALSTO
18、M TRANSPORTapapaapapaapapapaapapapapaapapapap 2 60068-2-64 IEC:2008 CONTENTS FOREWORD.4INTRODUCTION.61 Scope.72 Normative references .73 Terms and definitions .84 Requirements for test apparatus.124.1 General .124.2 Basic motion .124.3 Cross-axis motion .134.4 Mounting .134.5 Measuring systems.134.6
19、 Vibration tolerances .144.7 Control strategy.174.8 Vibration response investigation.175 Severities .185.1 Test frequency range .185.2 RMS value of acceleration .185.3 Shape of acceleration spectral density curve.185.4 Test duration .196 Preconditioning .197 Initial measurements and functional perfo
20、rmance test .198 Testing .198.1 General .198.2 Initial vibration response investigation.208.3 Low-level excitation for equalization prior to testing.208.4 Random testing .218.5 Final vibration response investigation.219 Recovery.2110 Final measurements and functional performance.2111 Information to
21、be given in the relevant specification .2212 Information to be given in the test report .22Annex A (informative) Standardized test spectra.24Annex B (informative) Guidance.30Bibliography.34Figure 1 Tolerance bands for acceleration spectral density; initial and final slope (see B.2.3).14Figure 2 Time
22、 history of stochastically excitation; probability density function with Gaussian (normal) distribution (Example with crest factor = 3, see also 3.14 and 4.6.2) .15Figure 3 Statistical accuracy of acceleration spectral density versus degrees of freedom for different confidence levels (see also 4.6.3
23、) .16INTRANORMES pour : ALSTOM TRANSPORTapapaapapaapapapaapapapapaapapapap60068-2-64 IEC:2008 3 Table A.1 Categories for spectrum: transportation .24Table A.2 Break points for spectrum: transportation.25Table A.3 Categories for spectrum: stationary installation.25Table A.4 Break points for spectrum:
24、 stationary installation .26Table A.5 Categories for spectrum: equipment in wheeled vehicles .27Table A.6 Break points for spectrum: equipment in wheeled vehicles.28Table A.7 Categories for spectrum: equipment in airplanes and helicopters .29Table A.8 Break points for spectrum: equipment in airplane
25、s and helicopters .29INTRANORMES pour : ALSTOM TRANSPORTapapaapapaapapapaapapapapaapapapap 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 Commiss
26、ion (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
27、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 int
28、erested 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
29、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 intereste
30、d 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
31、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 betwe
32、en 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 user
33、s 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 othe
34、r 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. U
35、se 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
36、 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 changes with r
37、egard 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. INTRANORMES pour : ALSTOM TRANSPORTapapaapapaapapapaapapapapaapapapap6
