1、BS ISO16063-31:2009ICS 17.160NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDMethods for thecalibration of vibrationand shock transducersPart 31: Testing of transverse vibrationsensitivityThis British Standardwas published underthe authority of theStandards Poli
2、cy andStrategy Committee on 30November 2009 BSI 2009ISBN 978 0 580 63215 0Amendments/corrigenda issued since publicationDate CommentsBS ISO 16063-31:2009National forewordThis British Standard is the UK implementation of ISO 16063-31:2009.It supersedes BS6955-11:1994 which is withdrawn.The UK partici
3、pation in its preparation was entrusted to TechnicalCommittee GME/21/2, Vibration and shock measuring instruments andtesting equipment.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provi
4、sionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS ISO 16063-31:2009Reference numberISO 16063-31:2009(E)ISO 2009INTERNATIONAL STANDARD ISO16063-31First edition2009-08-15Methods for the calibration o
5、f vibration and shock transducers Part 31: Testing of transverse vibration sensitivityMthodes pour ltalonnage des transducteurs de vibrations et de chocs Partie 31: Essai de sensibilit aux vibrations transversales BS ISO 16063-31:2009ISO 16063-31:2009(E) PDF disclaimer This PDF file may contain embe
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8、were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2009 All rights re
9、served. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requ
10、ester. 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.org Web www.iso.org Published in Switzerland ii ISO 2009 All rights reservedBS ISO 16063-31:2009ISO 16063-31:2009(E) ISO 2009 All rights reserved iiiContents Page Foreword i
11、v 1 Scope1 2 Normative references1 3 Uncertainty considerations 2 4 Determination of transverse sensitivity using a single-axis vibration generator.2 4.1 Apparatus.2 4.2 Method2 4.2.1 Test procedure.2 4.2.2 Expression of results3 5 Determination of the transverse sensitivity using a vibration genera
12、tor with turntable .4 5.1 Apparatus.4 5.2 Method6 5.3 Expression of results6 6 Determination of transverse sensitivity using a test system with X- and Y-vibration generators 6 6.1 Apparatus.6 6.2 Method and expression of results .9 7 Determination of the transverse sensitivity using a tri-axial vibr
13、ation generator11 7.1 Apparatus.11 7.2 Method and expression of results .14 8 Equipment for measuring of the input and output signals of the transducer to be tested .15 9 Preferred amplitudes and frequencies15 Annex A (normative) Definition of transverse sensitivity.16 Bibliography18 BS ISO 16063-31
14、:2009ISO 16063-31:2009(E) iv ISO 2009 All rights reservedForeword 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 committee
15、s. Each member body interested in a subject for which a 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 Inter
16、national Electrotechnical Commission (IEC) on all matters 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 St
17、andards adopted by the technical committees are circulated 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 sub
18、ject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 16063-31 was prepared by Technical Committee ISO/TC 108, Mechanical vibration, shock and condition monitoring, Subcommittee SC 3, Use and calibration of vibration and shock measuring instrumen
19、ts. This first edition cancels and replaces ISO 5347-11:1993. ISO 16063 consists of the following parts, under the general title Methods for the calibration of vibration and shock transducers: Part 1: Basic concepts Part 11: Primary vibration calibration by laser interferometry Part 12: Primary vibr
20、ation calibration by the reciprocity method Part 13: Primary shock calibration using laser interferometry Part 15: Primary angular vibration calibration by laser interferometry Part 21: Vibration calibration by comparison to a reference transducer Part 22: Shock calibration by comparison to a refere
21、nce transducer Part 31: Testing of transverse vibration sensitivity Part 41: Calibration of laser vibrometers The following parts are planned: Part 23: Angular vibration calibration by comparison to reference transducers Part 32: Resonance testing1) Part 42: Calibration of seismometers 1) Revision o
22、f ISO 5347-14:1993 and ISO 5347-22:1997. BS ISO 16063-31:2009INTERNATIONAL STANDARD ISO 16063-31:2009(E) ISO 2009 All rights reserved 1Methods for the calibration of vibration and shock transducers Part 31: Testing of transverse vibration sensitivity 1 Scope This part of ISO 16063 specifies details
23、of the instrumentation and methods to be used for transverse vibration sensitivity testing. It applies to rectilinear velocity and acceleration transducers. The methods and procedures specified in this part of ISO 16063 allow the determination of the sensitivity of a transducer to vibration in the p
24、lane perpendicular to its geometric axis of sensitivity (see Annex A). Because the magnitude of this transverse sensitivity can vary with the direction of the applied vibration, the various methods determine the maximum value. Using that value, the ratio of the transverse sensitivity to the sensitiv
25、ity on the geometric axis of the transducer can be calculated. In addition, the angle at which the maximum transverse sensitivity occurs can be determined. The methods and techniques specified can be applied without re-mounting the transducer away from its mounting surface during the test, thus avoi
26、ding significant uncertainties often encountered in methods which require repeated mounting. The different methods specified use a single-axis vibration exciter, a two-axis vibration exciter or a tri-axial vibration exciter. Tri-axial vibration excitation allows the transverse sensitivity and the se
27、nsitivity on the geometric axis to be determined simultaneously, thus simulating application conditions where the transducer is exposed to multi-axial vibration. NOTE In accelerometer designs using a bending beam, the transverse sensitivity measured without any vibration acting on the geometric axis
28、 of sensitivity of the accelerometer may considerably differ from the transverse sensitivity measured in the presence of a vibration acting on the geometric axis of sensitivity (i.e. when the bending beam is deflected by a vibration to be measured). This part of ISO 16063 is applicable to a frequenc
29、y range from 1 Hz to 5 kHz and for a dynamic range from 1 m/s2to 1 000 m/s2(frequency dependent) and from 1 mm/s to 1 m/s (frequency dependent). Although among all the systems specified it is possible to achieve these ranges, generally each has limitations permitting its use in much smaller ranges.
30、The methods specified are by comparison both to a reference transducer and to a laser interferometer. The methods specified allow an expanded uncertainty of the transverse sensitivity (coverage factor k = 2) of 0,1 % or less to be achieved, if the expanded uncertainty is expressed as a percentage of
31、 the sensitivity of the test transducer in its sensitive axis. 2 Normative references 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
32、 (including any amendments) applies. ISO 266, Acoustics Preferred frequencies ISO 16063-1:1998, Methods for the calibration of vibration and shock transducers: Part 1: Basic concepts BS ISO 16063-31:2009ISO 16063-31:2009(E) 2 ISO 2009 All rights reserved3 Uncertainty considerations An expanded uncer
33、tainty of 0,1 % (see Clause 1) means, for the example of a transverse sensitivity of 1 %, that the measured value lies within the interval of 0,9 % to 1,1 %. All users of this part of ISO 16063 are expected to assess and report the uncertainty of measurement according to ISO 16063-1:1998, Annex A, t
34、o document their uncertainty expressed as expanded uncertainties for a coverage factor of 2 or a coverage probability of 95 %. It is the responsibility of the laboratory or end user to make sure that the reported values of expanded uncertainty are credible. 4 Determination of transverse sensitivity
35、using a single-axis vibration generator 4.1 Apparatus The single-axis test system of transverse sensitivity specified in this clause consists of a single-axis vibration exciter that is equipped with a specially designed fixture that enables the transducer under test to be mounted such that its geome
36、tric axis of sensitivity is perpendicular to the direction of motion of the vibration exciter table (where the direction of the motion of the vibration exciter table shown in Figure 1 is defined as the Z-direction). It shall be possible to mount the test transducer at different angles about its sens
37、itive axis, preferably for continuous rotation over at least 180. An example (Reference 5) of an octahedral fixture is shown in Figure 1. Another example is the use of an electro-dynamic long-stroke vibration exciter operated in combination with a turntable driven by a stepper motor as specified in
38、Clause 5. The amplitude of the transverse acceleration of the fixture due to transverse motion inherent in the vibration exciter shall be less than 1 % of the acceleration amplitude in the Z-direction at each of the test frequencies. For cases in which the measured transverse sensitivity is less tha
39、n 2 % of the sensitivity measured on the geometric axis, the transverse motion of the vibration exciter shall meet even higher requirements (e.g. 0,2 % at the test frequencies). To ensure that the transverse motion of the vibration exciter is sufficiently small, measurements of the transverse motion
40、 of the total setup (vibration exciter with fixture) with a load close in shape and weight to the transducer being tested should be performed beforehand or the transverse motion could be monitored during the measurement of the transverse sensitivity. For the measurement of the input and output signa
41、l of the transducer to be tested, see Clause 8. The frequency range of the transverse test system is generally 1 Hz to 5 kHz, depending on the working range of the vibration exciter, and on the mass of the fixtures and of the transducer tested. Acceleration amplitudes from 1 m/s2to 200 m/s2can be ge
42、nerated. 4.2 Method 4.2.1 Test procedure Vibrate the transducer at the reference amplitude and frequency on the geometric axis of sensitivity to determine its sensitivity, SN(briefly referred to as S). Determine the values of transverse sensitivity as a function of frequency, ST, by vibrating perpen
43、dicularly to the sensitive axis of the transducer at different angles about its sensitive axis. The directions and magnitudes of the maximum and minimum transverse sensitivity shall be reported at a designated test frequency or as a function of frequency. BS ISO 16063-31:2009ISO 16063-31:2009(E) ISO
44、 2009 All rights reserved 343215Key 1 screw unit for re-mounting the octahedron in different positions (angle shifts of 45) 2 transducer to be tested 3 octahedron 4 reference accelerometer 5 vibration exciter table Figure 1 Example of a fixture for mounting the test transducer with its sensitive axi
45、s perpendicular to the direction of the vibration generated by the vibration exciter 4.2.2 Expression of results Calculate the transverse sensitivity, T,S using Equation (1): outTTuSa= (1) where outu is the amplitude of the output signal of the transducer vibrating perpendicularly to its sensitive a
46、xis; Ta is the amplitude of the acceleration in the test direction. BS ISO 16063-31:2009ISO 16063-31:2009(E) 4 ISO 2009 All rights reservedCalculate the relative transverse sensitivity, *T,S expressed as a percentage, using Equation (2): * TT100 %SSS= (2) where S is the sensitivity of the transducer
47、 on the geometric axis of sensitivity. 5 Determination of the transverse sensitivity using a vibration generator with turntable 5.1 Apparatus 5.1.1 General. The single-axis test system of transverse sensitivity specified in this clause consists of a single-axis vibration exciter and a rotating table
48、. NOTE An apparatus similar to Figure 2 is used by several manufacturers of accelerometers in order to comply with criteria contained in ISA-RP 37.2 6. For details of the apparatus specified as an example in the following, see Reference 7. a(t)w121345Key 1 rotating disk 2 drive rod 3 turntable contr
49、olled by a stepper motor 4 slide or air bearing 5 transducer to be tested a(t) acceleration 1angular frequency (“speed”) Figure 2 Example of a mechanical vibration exciter with turntable used for the measurement of the transverse sensitivity The crank is driven at a constant speed, 1, by an electric motor via a toothed belt. The slider, in turn, drives a carriage, the motion of which is constrained by two bars with bronze sockets. On the carriage, there is a turntable whose motion is controlled by a ste
