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1、BRITISH STANDARD BS ISO 21289:2008 Mechanical vibration and shock Parameters to be specified for the acquisition of vibration data ICS 17.160 ? Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008
2、22:24:45 MDTNo reproduction or networking permitted without license from IHS -,-,- BS ISO 21289:2008 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 May 2008 BSI 2008 ISBN 978 0 580 56228 0 National foreword This British Standard is the UK
3、 implementation of ISO 21289:2008. The UK participation in its preparation was entrusted by Technical Committee GME/21, Mechanical vibration, shock and condition monitoring, to Subcommittee GME/21/2, Vibration and shock measuring instruments and testing equipment. A list of organizations represented
4、 on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/cor
5、rigenda issued since publication DateComments Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:24:45 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL S
6、TANDARD ISO 21289 First edition 2008-03-01 Reference number ISO 21289:2008(E) Mechanical vibration and shock Parameters to be specified for the acquisition of vibration data Vibrations et chocs mcaniques Paramtres spcifier pour lacquisition de donnes vibratoires BS ISO 21289:2008 Copyright British S
7、tandards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:24:45 MDTNo reproduction or networking permitted without license from IHS -,-,- ii Copyright British Standards Institution Provided by IHS under license with BS
8、I - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:24:45 MDTNo reproduction or networking permitted without license from IHS -,-,- iii Contents Page 1Scope 1 2Normative references 1 3Terms and definitions 1 4Abbreviated terms . 1 5Parameters to be specified . 1 6Vibrat
9、ion test reporting . 7 Bibliography . 12 BS ISO 21289:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:24:45 MDTNo reproduction or networking permitted without license from IHS -,-,- iv
10、 Foreword 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
11、technical 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 matter
12、s of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulat
13、ed to the member bodies for voting. Publication as an International Standard requires 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 document may be the subject of patent rights. ISO shall not be held responsible
14、 for identifying any or all such patent rights. ISO 21289 was prepared by Technical Committee ISO/TC 108, Mechanical vibration, shock and condition monitoring. BS ISO 21289:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910
15、770001 Not for Resale, 08/14/2008 22:24:45 MDTNo reproduction or networking permitted without license from IHS -,-,- v Introduction Use of this International Standard is recommended to minimize errors and ambiguities in vibration measurement due to inadequate or confusing definition of essential par
16、ameters. The specified parameters provide information to enable a measurement to be conducted and data to be provided, assuming that proper practices and all applicable sub-specifications have been followed. Proper use of this International Standard will improve the quality of databases for vibratio
17、n condition monitoring and assessment of machines and structures. It will also facilitate improved comparison of vibration test data conducted by different organizations, using different methods, or over long periods of time. BS ISO 21289:2008 Copyright British Standards Institution Provided by IHS
18、under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:24:45 MDTNo reproduction or networking permitted without license from IHS -,-,- blank Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boe
19、ing Co/5910770001 Not for Resale, 08/14/2008 22:24:45 MDTNo reproduction or networking permitted without license from IHS -,-,- 1 Mechanical vibration and shock Parameters to be specified for the acquisition of vibration data 1Scope This International Standard identifies a set of parameters to be sp
20、ecified, as applicable, for vibration measurements, analysis, reporting and archiving. It is intended for use in the testing of structures, machines, vehicles, sensitive equipment and other dynamic systems. This International Standard applies to measurements made by modern data acquisition systems,
21、including digital signal processors, using readily available commercial instrumentation. It can be applied to a variety of common vibration measurement types, including time history, spectrum and frequency-response function measurements. 2Normative references The following referenced documents are i
22、ndispensable 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. ISO 2041, Mechanical vibration, shock and condition monitoring Vocabulary ISO 18431-2, Me
23、chanical vibration and shock Signal processing Part 2: Time domain windows for Fourier Transform analysis 3Terms and definitions For the purposes of this document, the terms and definitions given in ISO 2041 apply. 4Abbreviated terms ASCII, American standard code for information interchange UFF, uni
24、versal file format EU, engineering unit 5Parameters to be specified 5.1General parameters 5.1.1Concerned parties The organizations or individuals involved in the vibration testing, and their roles and responsibilities, shall be identified. EXAMPLEConcerned parties may include the individuals and/or
25、organizations that request, require, conduct, witness, review and/or certify the vibration test and/or the resulting data. BS ISO 21289:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:
26、24:45 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 5.1.2Test objectives A statement of the test objectives shall be supplied. 5.1.3Test object The object under test shall be defined and described with sufficient detail to enable later identification of the object. The
27、test object may be a structure, machine, vehicle, sensitive equipment item, or other dynamic mechanical system. In the case of a series of tests of related subsystems, each subsystem shall be defined and distinguished from other related subsystems. If the test object is to be tested prior to, and fo
28、llowing, modification(s), this shall be indicated as varying test conditions as indicated in 5.1.8. To facilitate digital data storage and for filenames, etc., the test object and/or subsystems shall be assigned a name or code to distinguish them from other test objects and subsystems. 5.1.4Location
29、 of test The location or locations of the test shall be specified, to include geographic location, as well as specific test site. EXAMPLEThe test location may include the country, city, province, or other geographical description as well as the test laboratory, test range, or site location of field
30、testing. 5.1.5Date(s) of test The test date(s) shall be specified. This shall include year, month, day and time of day of all test events. 5.1.6Value to be measured The value to be measured and the corresponding EU shall be specified for each measurement conducted during the test. The EU shall be an
31、 SI unit. The method of recording and reporting the value shall also be specified. EXAMPLE 1The value to be measured may be acceleration, velocity, strain, force, or any other physical quantity describing the severity of vibration, including the ratio, sum or other arithmetic combination of physical
32、 quantities such as mobility. The value to be measured may also be a frequency of interest such as a resonance frequency. EXAMPLE 2Various methods of recording and reporting measurement values are possible, including amplitude, peak value, average value, root-mean-square value and level. 5.1.7Bounda
33、ry conditions The boundary conditions of the test, describing the relationship of the test object to its physical surroundings, shall be specified. If applicable, additional data describing the boundary conditions, such as mounted natural frequency or attachment impedance, shall be specified. EXAMPL
34、ETypical boundary conditions include: in situ, in which the test object is situated in its normal or usual surroundings; resiliently supported, in which the test object is supported by resilient mountings to dynamically isolate the test object from its surroundings and to approximate free boundary c
35、onditions; rigidly supported, in which the test object is attached to a bed plate or other stiff, massive object to approximate a fixed boundary; fixtured, in which the test object is attached to a specially designed test structure or apparatus that is intended to simulate an in situ condition in th
36、e laboratory or other controlled test site other than its normal surroundings. BS ISO 21289:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:24:45 MDTNo reproduction or networking permi
37、tted without license from IHS -,-,- 3 5.1.8Test and environmental conditions For each measurement series, the test object may be subjected to varying test conditions in order to characterize the vibration response under these different conditions. For each test condition, a written description of th
38、e condition shall be supplied, including quantification by secondary, non-vibration measurements where appropriate. An alphanumeric code should be generated for each test condition, as a modifier to be added to the test object code defined in 5.1.3. In certain cases, measurements may be made during
39、changing conditions, for which the starting condition, ending condition and condition program should be specified. EXAMPLEThe test object may be tested under varying environmental factors (temperatures, pressures, etc.), operating conditions (rotational speeds, controlled excitation signals, throttl
40、e conditions), and/or before and after events (damage, cycling, ageing, balancing or treatments such as painting or lubrication). 5.1.9Measurement locations on the object Each measurement shall be assigned a spatial location on the test object. This location shall be defined by its relative distance
41、 from a reference location on the test object, by distance from the origin of a defined co-ordinate system for the test object, by diagram or by a combination of indicators such that no ambiguity can result. For the case of measurements that cannot be described by a single point in space, such as me
42、asurement from film-type sensors, a description of the location and area of coverage is required. A unique, unambiguous alphanumeric code distinguishing each location should be devised to abbreviate the description of each location for use in tables, data storage filenames, etc. NOTEMeasurement loca
43、tions may be chosen to be consistent with standard databases such as discussed in ISO 13373-1:2002, Annex D. 5.1.10Measurement degree of freedom and frame of reference Each measurement location shall be assigned a degree of freedom in a frame of reference. Each spatial location may have up to six de
44、grees of freedom, namely three mutually orthogonal translation degrees of freedom and three mutually orthogonal rotational degrees of freedom. For each degree of freedom, the frame of reference, defining the meaning of positive and negative magnitude, shall be specified. It is preferable to relate t
45、he degrees of freedom and polarity to a global co-ordinate system consistent with the co-ordinate system used to define the measurement locations; however, in some cases, local co-ordinate systems may be preferable. NOTEMeasurement degrees of freedom and frame of reference may be chosen to be consis
46、tent with standard databases such as discussed in ISO 13373-1:2002, Annex D. 5.1.11Test documentation requirements Requirements for test documentation shall be specified. EXAMPLETest documentation may include a test plan, notification of test, final test report, and any other required documentation.
47、 5.1.12Applicable test standards Applicable test standards governing the vibration test shall be specified. 5.2Test equipment parameters 5.2.1Data acquisition system A list identifying components of the data acquisition system used to collect the vibration data shall be specified. The list shall inc
48、lude manufacturer and model number of all data acquisition equipment. Serial number and dates of calibration shall also be provided. BS ISO 21289:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:24:45 MDTNo reproduction or networking