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1、INTERNATIONAL STANDARD ISO 13355 First edition 2001-11-01 Reference number ISO 13355:2001(E) ISO 2001 Packaging Complete, filled transport packages and unit loads Vertical random vibration test Emballages Emballages dexpdition complets et pleins et charges unitaires Essais de vibration verticale ala
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5、e Central Secretariat at the address given below. ISO 2001 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, elec- tronic or mechanical, including photocopying and microfilm, without permission in writing from eith
6、er ISO at the address below or ISOs mem- ber body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ISO 13355:2001(E) ISO 2001 All rights reserved iii Forew
7、ord ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a techni
8、cal committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of e
9、lectrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requir
10、es approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standar
11、d ISO 13355 was prepared by Technical Committee ISO/TC 122,Packaging, Subcommittee SC 3,Performance requirements and tests for means of packaging, packages and unit loads (as required by ISO/TC 122). Annex A of this International Standard is for information only. ISO 13355:2001(E) iv ISO 2001 All ri
12、ghts reserved Introduction A random vibration test is the most realistic way to reproduce environmental vibration during transportation. For this reason, if suitable laboratory facilities are available, this kind of test should be preferred to any fixed or swept frequency sinusoidal vibration tests
13、similar to those given in ISO 2247 1 and ISO 8318 2. INTERNATIONAL STANDARDISO 13355:2001(E) ISO 2001 All rights reserved 1 Packaging Complete, filled transport packages and unit loads Vertical random vibration test 1Scope This International Standard specifies a method to carry out a vertical random
14、 vibration test on a complete, filled transport package(s) and unit loads using a random excitation1). This test may be used to assess the performance of a package in terms of its strength or the protection that it offers to its contents when it is subjected to vertical vibration. It may be performe
15、d either as a single test to investigate the effects of vertical vibration or as a part of a sequence of tests designed to measure the ability of a test item to withstand a distribution system that includes a vibration hazard. NOTEIn the following text a package or unit load is called a test item. 2
16、Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreemen
17、ts based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers o
18、f currently valid International Standards. ISO 2206,Packaging Complete, filled transport packages Identification of parts when testing ISO 2233,Packaging Complete, filled transport packages and unit loads Conditioning for testing ISO 2234,Packaging Complete, filled transport packages and unit loads
19、Stacking tests using a static load 3Principle The test item is placed on a vibration table and made to vibrate using a random excitation with frequency between and. The atmospheric conditions, the duration of the test, the acceleration power spectral density, the attitude of the test item and its me
20、thod of restraint are predetermined. NOTEWhen required, a load may be superimposed on the test item to simulate conditions at the bottom of a stack. 4Apparatus 4.1Vibration table, of sufficient size and performance (in terms of power, displacement, frequency range) capable of being stiff (its lower
21、resonant frequency shall be higher than the higher test frequency) and remaining horizontal during the test. The table may be equipped with the following components. 4.1.1Low fences, restricting sideways and endways movements during testing. 1)The treatment of random vibration theory can be found in
22、 IEC 60068-2-64 (see reference 3 in the Bibliography). 3 Hz200 Hz ISO 13355:2001(E) 2 ISO 2001 All rights reserved 4.1.2High fences, or other means of maintaining a superimposed load in position on the test item during testing. 4.1.3Means to simulate the method of restraint, of the test item during
23、transit. Furthermore, the apparatus shall meet the requirements and tolerances of clause 6. 4.2Vibration-measurement, data-storage and control system, comprising accelerometers, signal conditioners and a computer capable of: a)generating vibration with the required power spectral density; b)controll
24、ing the motion of the vibration table by feeding back the signal from the control accelerometer which monitors the table acceleration; c)performing the analysis with at least 120 statistical degrees of freedom; d)having data acquisition and control channels with a response accurate toover the freque
25、ncy range specified for the test. 5Sampling 5.1Test item preparation The test item shall normally be filled with its intended contents. However, simulated or substituted contents may be used, provided that the dimensions and physical properties of such contents are as close as possible to those of t
26、he intended contents. Ensure that the test item is closed normally, as if ready for distribution. If simulated or substituted contents are used, ensure that the normal method of closure is still employed. 5.2Conditioning Condition the test item in accordance with ISO 2233. 6Procedure Carry out the t
27、est in the same atmospheric conditions as used for conditioning where this is critical to the performance of the test item. In other circumstances, carry out the test in atmospheric conditions which are as near as practicable to those used for conditioning. Place the test item in the predetermined a
28、ttitude on the vibration table (see 4.1), with the centre of gravity placed as near as practicable to the centre of the table; if the test item is not secured to the table it may be fenced. If a superimposed load is required, the loading procedure shall comply with ISO 2234. Measure the imposed acce
29、leration as closely as possible to the test item. Protect the accelerometer suitably to avoid damage. Ensure the horizontal components of the acceleration are no greater thanof the value of the vertical component. Start the testbelow the test level to allow the system to equalize the power spectral
30、density profile, then carefully adjust the level to reach full test level and continue the test for the predetermined duration. The test duration and the power spectral density of the vibration table, in absence of experimental data concerning the effects of transportation to be reproduced, may be c
31、hosen as indicated in annex A. 5 % 20 % 6 dB -,-,- ISO 13355:2001(E) ISO 2001 All rights reserved 3 The tolerance on root mean square acceleration shall not exceed; the obtained acceleration power spectral density of the test control signal shall not deviate by more thanover the entire test frequenc
32、y range. Tests may be interrupted at any time to allow visual inspection of the test item, or for any other purpose. 7Test report The test report shall include the following information: a)a reference to this International Standard, i.e. ISO 13355; b)the name and address of the testing laboratory an
33、d name and address of the customer; c)the unique identification of report; d)the date of receipt of the test items and the date(s) of performance of test; e)the name, the title and the signature of persons accepting responsibility for the test report; f)a statement to the effect that the test result
34、s relate only to the items tested; g)a statement that the report shall not be reproduced except in full without the written approval of the testing laboratory; h)the number of replicate test items tested; i)a full description, including dimensions, mass, structural and material specifications of the
35、 test item and its fittings, cushioning, blocking, closure or reinforcing arrangements, in accordance with ISO 2206; j)a description of the contents, i.e. if simulated or substituted contents were used, full details shall be given; k)the gross mass of the test item; l)the relative humidity, the temp
36、erature and the time of conditioning; the temperature and the relative humidity of the test area at the time of test; whether these values comply with the requirements of ISO 2233; m) the duration of the test, the frequency range, the applied acceleration power spectral density and the obtained root
37、 mean square acceleration value; n)whether a superimposed load was used; if so, the mass, in kilograms, of the superimposed load and the period of time during which the test item was under load; o)the method of restraint, and whether low or high fences were used; p)any deviations from the test metho
38、d described in this International Standard; q)the recorded acceleration power spectral densities, with any observations which may assist in correct interpretation; r)the attitude(s) in which the package was tested, using the method of identification as given in ISO 2206; s)a list of the equipment an
39、d the serial numbers. 15 % 3 dB ISO 13355:2001(E) 4 ISO 2001 All rights reserved Annex A (informative) Indicative power spectral density Table A.1 gives the indicative power spectral density which can be used to simulate generic (mainly road) transportation, when experimental recordings are not avai
40、lable. The total root mean square acceleration value of the frequency range is. The minimum recommended test duration isfor each test item attitude to be tested. The correlation between transport distance and test time is not addressed in this International Standard. NOTEVibration spectra depend ver
41、y much on the transportation vehicle selected. Therefore, whenever possible, perform tests with spectra obtained from measured data of the particular transportation vehicles. Table A.1 Spectral density FrequencyLevelSlope HzdB/oct. 30,000 5 3 to 6 6 to 180,012 18 to 40 400,001 40 to 200 2000,000 5 g
42、2/Hz +13,75 9,34 1,29 0,59g 30 min ISO 13355:2001(E) ISO 2001 All rights reserved 5 Bibliography 1 ISO 2247,Packaging Complete, filled transport packages and unit loads Vibration tests at fixed low frequency 2 ISO 8318,Packaging Complete, filled transport packages and unit loads Sinusoidal vibration tests using a variable frequency 3 IEC 60068-2-64,Environmental testing Part 2: Test methods Test Fh: Vibration, broad-band random (digital control) and guidance ISO 13355:2001(E) ICS 55.180.40 Price based on 5 pages ISO 2001 All rights reserved