1、 IEC 60068-2-6 Edition 7.0 2007-12 INTERNATIONAL STANDARD NORME INTERNATIONALE Environmental testing Part 2-6: Tests Test Fc: Vibration (sinusoidal) Essais denvironnement Partie 2-6: Essais Essai Fc: Vibrations (sinusodales) IEC 60068-2-6:2007 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 I
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16、02 11 Fax: +41 22 919 03 00 IEC 60068-2-6 Edition 7.0 2007-12 INTERNATIONAL STANDARD NORME INTERNATIONALE Environmental testing Part 2-6: Tests Test Fc: Vibration (sinusoidal) Essais denvironnement Partie 2-6: Essais Essai Fc: Vibrations (sinusodales) INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMIS
17、SION ELECTROTECHNIQUE INTERNATIONALE X ICS 19.040 PRICE CODE CODE PRIX ISBN 2-8318-9490-5 2 60068-2-6 IEC:2007 CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references7 3 Terms and definitions .7 4 Requirements for testing.10 4.1 Required characteristics 10 4.1.1 Basic motion10 4.1.2 Spur
18、ious motion.10 4.1.3 Signal tolerance.11 4.1.4 Vibration amplitude tolerances .11 4.1.5 Frequency tolerances.11 4.1.6 Sweep .12 4.2 Control strategy.12 4.2.1 Single/multipoint control.12 4.2.2 Multi-reference control .13 4.3 Mounting .13 5 Severities .13 5.1 Frequency range14 5.1.1 Lower frequency f
19、 1Hz .14 5.1.2 Upper frequency f 2Hz .14 5.2 Vibration amplitude14 5.3 Duration of endurance .17 5.3.1 Endurance by sweeping .17 5.3.2 Endurance at fixed frequencies 18 6 Preconditioning.18 7 Initial measurements.18 8 Testing .18 8.1 General .18 8.2 Vibration response investigation.19 8.3 Endurance
20、procedures.19 8.3.1 Endurance by sweeping .19 8.3.2 Endurance at fixed frequencies 19 9 Intermediate measurements20 10 Recovery 20 11 Final measurements .20 12 Information to be given in the relevant specification.20 13 Information to be given in the test report .21 Annex A (informative) Guide to te
21、st Fc .23 Annex B (informative) Examples of severities primarily intended for components 36 Annex C (informative) Examples of severities primarily intended for equipment.37 Bibliography39 60068-2-6 IEC:2007 3 Figure 1 Nomogram relating vibration amplitude to frequency with lower cross-over frequency
22、 (8 Hz to 10 Hz)15 Figure 2 Nomogram relating vibration amplitude to frequency with higher cross-over frequency (58 Hz to 62 Hz)16 Figure 3 Nomogram relating vibration displacement amplitude to frequency (only applicable for frequency ranges with an upper frequency of 10 Hz) 17 Figure A.1 Generalize
23、d transmissibility factors for vibration isolators.33 Table A.1 Number of sweep cycles and associated endurance times per axis .30 Table A.2 CB response time.31 Table A.3 CPB response time.32 Table B.1 Endurance by sweeping Examples with higher cross-over frequency 36 Table C.1 Endurance by sweeping
24、 Examples with lower cross-over frequency .37 Table C.2 Endurance by sweeping Examples with higher cross-over frequency38 4 60068-2-6 IEC:2007 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ENVIRONMENTAL TESTING Part 2: Tests Test Fc: Vibration (sinusoidal) FOREWORD 1) The International Electrotechnica
25、l 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 en
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34、ication. 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 s
35、uch patent rights. International Standard IEC 60068-2-6 has been prepared by IEC technical committee 104: Environmental conditions, classification and methods of test. This seventh edition cancels and replaces the sixth edition, published in 1995. It consitutes a technical revision. The major change
36、s with regard to the previous edition 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 IEC 60068-2-47:Mounting Simplification of the layout of the standard by replacing some tables with tex
37、t. Addition of the test report requirements (see Clause 13). 60068-2-6 IEC:2007 5 The text of this standard is based on the following documents: FDIS Report on voting 104/439/FDIS 104/449/RVD Full information on the voting for the approval of this standard can be found in the report on voting indica
38、ted 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, under the general title Environmental testing, can be found on the IEC website. The committee has decided that the contents of this publicatio
39、n will remain unchanged until the maintenance result 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. 6 60068-2-6 IEC:2007 INTRODU
40、CTION This part of IEC 60068 gives a method of test applicable to components, equipment and other articles which, during transportation or in service, may be subjected to conditions involving vibration of a harmonic pattern, generated primarily by rotating, pulsating or oscillating forces, such as o
41、ccur in ships, aircraft, land vehicles, rotorcraft and space applications or are caused by machinery and seismic phenomena. This standard consists basically of subjecting a specimen to sinusoidal vibration over a given frequency range or at discrete frequencies, for a given period of time. A vibrati
42、on response investigation may be specified which aims at determining critical frequencies of the specimen. The relevant specification shall indicate whether the specimen shall function during vibration or whether it suffices that it still works after having been submitted to vibration. It is emphasi
43、zed that vibration testing always demands a certain degree of engineering judgement, and both the supplier and purchaser should be fully aware of this fact. However, sinusoidal testing is deterministic and, therefore, relatively simple to perform. Thus it is readily applicable to both diagnostic and
44、 service life testing. The main part of this standard deals primarily with the methods of controlling the test at specified points using either analogue or digital techniques, and gives, in detail, the testing procedure. The requirements for the vibration motion, choice of severities including frequ
45、ency ranges, amplitudes and endurance times are also specified, these severities representing a rationalized series of parameters. The relevant specification writer is expected to choose the testing procedure and values appropriate to the specimen and its use. Certain terms have been defined to faci
46、litate a proper understanding of the text. These definitions are given in Clause 3. Annex A gives general guidance for the test and Annexes B and C provide guidance on the selection of severities for components and equipment. 60068-2-6 IEC:2007 7 ENVIRONMENTAL TESTING Part 2: Tests Test Fc: Vibratio
47、n (sinusoidal) 1 Scope This part of IEC 60068 gives a method of test which provides a standard procedure to determine the ability of components, equipment and other articles, hereinafter referred to as specimens, to withstand specified severities of sinusoidal vibration. If an item is to be tested i
48、n an unpackaged form, that is without its packaging, it is referred to as a test specimen. 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. The purpose of this test is to determine any mechan
49、ical weakness and/or degradation in the specified performance of specimens and to use this information, in conjunction with the relevant specification, to decide upon the acceptability of the specimens. In some cases, the test method may also be used to demonstrate the mechanical robustness of specimens and/or to study their dynamic behaviour. Categorization of components can also be made
