1、BRITISH STANDARD BS ISO 12097-3:2002 Road vehicles Airbag components Part 3: Testing of inflator assemblies ICS 43.040.80 BS ISO 12097-3:2002 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 27 May 2003 BSI 27 May 2003 ISBN 0 580 41932 0 Natio
2、nal foreword This British Standard reproduces verbatim ISO 12097-3:2002 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee AUE/7, Automobile Occupant Restraint Systems, which has the responsibility to: A list of organizations r
3、epresented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by
4、using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. 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 does not of itself confer immunit
5、y from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in
6、 the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 26, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since pub
7、lication Amd. No. Date Comments Reference number ISO 12097-3:2002(E)INTERNATIONAL STANDARD ISO 12097-3 First edition 2002-06-15 Road vehicles Airbag components Part 3: Testing of inflator assemblies Vhicules routiers Composants des sacs gonflables Partie 3: Essais des gnrateurs de gaz BSISO120973:20
8、02ii BSISO120973:2002 iiiContents Page Foreword.iv 1 Scope 1 2 Normative references1 3 Terms and definitions .1 4 General requirements1 5 General test conditions.2 5.1 Purpose of environmental testing .2 5.2 Test sequence3 5.3 Measurements and test report .4 5.4 Test programme.4 6 Environmental test
9、ing.5 6.1 General5 6.2 Drop test .5 6.3 Mechanical impact test .6 6.4 Vacuum test .9 6.5 Simultaneous vibration and temperature test 10 6.6 Thermal humidity cycling .12 7 Performance testing14 7.1 Electrostatic discharge (ESD) test.14 7.2 Electromagnetic compatibility (EMC) test.17 7.3 Tank test .18
10、 7.4 Bonfire test.20 7.5 Trigger device testing .22 7.6 Burst test 22 Annex A (normative) Definition of temperature build-up time, t e .23 Annex B (informative) Survey of origin of environmental test procedures 25 Bibliography26 BSISO120973:2002iv Foreword ISO (the International Organization for Sta
11、ndardization) 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 technical committee has been established has the righ
12、t 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 electrotechnical standardization. International
13、Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an
14、 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 part of ISO 12097 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent righ
15、ts. ISO 12097-3 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 12, Passive safety crash protection systems. ISO 12097 consists of the following parts, under the general title Road vehicles Airbag components: Part 1: Vocabulary Part 2: Testing of airbag modules Part 3:
16、Testing of inflator assemblies Annex A forms a normative part of this part of ISO 12097. Annex B is for information only. BSISO120973:2002INTENRATIONAL TSANDADR IS-79021 O3:(2002E)1Road vehicles Airbag components Part 3: Testing of inflator assemblies CAUTION There is a possibility of accidental fir
17、ing of the airbag during any of the tests described in this part of ISO 12097. Appropriate precautions should therefore be taken both in terms of handling the inflator assembly and in terms of the design of test equipment. 1 Scope This part of ISO 12097 establishes uniform test methods and specifies
18、 environmental procedures and requirements for the inflator assemblies of airbag modules in road vehicles. NOTE For testing of the inflator assembly as part of the airbag module, see ISO 12097-2. 2 Normative references The following normative documents contain provisions which, through reference in
19、this text, constitute provisions of this part of ISO 12097. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 12097 are encouraged to investigate the possibility of applying the most recen
20、t 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 of currently valid International Standards. ISO 12097-1, Road vehicles Airbag components Part 1: Vocabulary ISO 6
21、487, Road vehicles Measurement techniques in impact tests Instrumentation ISO 11452 (all parts), Road vehicles Component test methods for electrical disturbances from narrowband radiated electromagnetic energy IEC 60068-2, Environmental testing Part 2: Tests 3 Terms and definitions For the purposes
22、of this part of ISO 12097, the terms and definitions given in ISO 12097-1 and the following, apply. 3.1 trigger device device that activates the inflator assembly (IA) 4 General requirements The IA shall be designed such that, when handled appropriately, no dangers arise for persons or objects. The
23、IA manufacturer shall produce and make available appropriate handling instructions. BSISO120973:20022 The gas concentrations and the amount of particles measured immediately after the ignition of an IA (or complete module) shall not occur in concentrations that, with the current state of knowledge,
24、can be considered as toxic to humans within 30 min of exposure in an enclosed room having a volume of 2,5 m 3 . The gas and particulates arising from the ignition of an IA (or complete module) shall not have a strong irritating effect on a person. The IA, complete with squib, if applicable, shall no
25、t be ignited by electromagnetic coupling or interference voltages. 5 General test conditions 5.1 Purpose of environmental testing Environmental tests simulate the effects of environmental loads on the IA with respect to its functional behaviour, and service life. They are based on the typical life-c
26、ycle of an IA covering shipping, storage, mounting on the module, operation, maintenance and repair of the vehicle. The complete environmental test programme is composed of individual test methods which simulate automobile- related influences such as mechanical shocks and vibration, heat, cold and h
27、umidity. Simulating the total service life may require more severe test levels than those seen in real world conditions to accelerate ageing and degradation processes. The environmental test programme for IAs as specified in this part of ISO 12097 shall be a minimum requirement to ensure the verific
28、ation of its environmental robustness. Table 1 gives an overview of the complete test programme applied to three identical test samples. Table 2 lists the performance tests which shall be applied to three exposed samples and nine (or ten, see 7.4.4) unexposed samples. The supplementary performance t
29、ests given in Table 3 shall be performed on the trigger device and the IA housing. Table 1 Inflator assembly environmental test programme Test sequence Test Subclause Sample number Exposed samples Unexposed samples 1 2 3 4 5 6 7 8 9 10 11 12 13 1 Drop test 6.2 X X X 2 Mechanical impact test 6.3 X X
30、X 3 Vacuum test 6.4 X X X 4 Simultaneous vibration temperature test 6.5 X X X 5 Thermal humidity cycling 6.6 X X X BSISO120973:2002 3Table 2 Performance test programme Sample number Exposed samples Unexposed samples Test Sequence Test Subclause 1 2 3 4 5 6 7 8 9 10 11 12 13 1 ESD test 7.1 X X X 2 EM
31、C test 7.2 X X X 3 Tank test at ( 35 2,5) C X X (23 5) C X X (85 2,5) C 7.3 X X 4 Gas and solid analyses 7.3.5.6 7.3.5.7 x x x x x x 5 Bonfire test 7.4 X X X (X) Table 3 Supplementary performance tests Test sequence Test Subclause 1 Trigger device testing 7.5 2 Burst test 7.6 Statistical procedures
32、5.2 Test sequence The test purpose and sequence are based on life-cycle considerations and on possible failure mechanisms. The drop test and the mechanical impact test reflect handling, transportation and mounting conditions that occur mainly during an early stage of the life cycle. The vacuum test
33、simulates transportation in partially pressurized aircraft and driving at high altitudes. The simultaneous vibration temperature test simulates the combined action of vibration and temperature that occurs during the life cycle in a vehicle. Dynamic loads during driving can be typically described as
34、broadband random vibrations with increased vibration levels at several characteristic frequency ranges. Such loads may cause friction, abrasion, fatigue and other damaging effects. It is important to apply vibrations to the test sample at various temperatures, as many of the materials, especially po
35、lymers, vary their mechanical behaviour with temperature. A simultaneous vibration/temperature regime therefore simulates appropriately the real vehicle environment. The thermal humidity test simulates changing climatic influences with special emphasis on the penetration of water into the IA during
36、periods when the IA temperature is below the dew point temperature of the surrounding air. This test can cause electrical failures as well as material swelling, shrinking and corrosion, and can also promote biodeterioration such as fouling. BSISO120973:20024 5.3 Measurements and test report The foll
37、owing items shall be measured and recorded on a data sheet before or during, or both before and during, each test of Table 1: test number, sample number, test temperature and date; visual inspection of the samples and, if necessary, photographic documentation; definition of the three main axes (see
38、example in Figure 1); ambient temperature during test, in degrees Celsius (C); squib resistance of the inflator assembly, if applicable. All relevant observations and unusual events shall be noted and included in the test report. Figure 1 Definition of IA main axes 5.4 Test programme This part of IS
39、O 12097 specifies a test programme with 12 identical samples of an inflator assembly (possibly 13 in the case of the bonfire test, see 7.4.3), numbered in accordance with Table 1 and Table 2: three IAs are subjected to the environmental test programme (multiple exposure); nine (or ten) IAs are unexp
40、osed samples. The plug and the ignition cable shall be connected, if applicable; a test current (see Figure 2 for an example) shall be applied according to the system used (with the exception of the mechanical impact test, the drop test and the vacuum test). After each test, measure and record the s
41、quib resistance, where applicable. BSISO120973:2002 5Figure 2 Example of a test current for environmental simulation 6 Environmental testing 6.1 General The following test procedures are based mainly on those of IEC 60068-2 (see the Bibliography). Certain modifications to that basic standard were ad
42、opted for this part of ISO 12097 in order to recognize vehicle-specific conditions. 6.2 Drop test 6.2.1 Purpose The purpose of this test is to determine whether the IA experiences any detrimental effect when dropped from a specified height and at specified orientations. 6.2.2 Equipment A steel impac
43、t plate of a minimum of 1 m 1 m with at least 10 mm thickness, resting on a solid floor, with a fixture that supports the sample at the specified height, shall be used. 6.2.3 Test samples Three IAs shall be tested under the conditions specified in 6.2.4 and in accordance with Table 1. 6.2.4 Test con
44、ditions The drop height shall be 0,2 0 1 + m. The ambient temperature shall be (23 5) C. BSISO120973:20026 6.2.5 Test procedure Mount test sample No. 1 onto the support fixture at the specified height above the impact plate and oriented such that it will fall in one of the six directions indicated i
45、n Figure 1. Disarm the trigger device, if included in the IA. Release the IA, allowing it to free fall onto the impact plate. Repeat the test using the same sample oriented to fall in the opposite direction. Repeat the test twice more, once using sample No. 2 and once using sample No. 3, each time a
46、long one of the remaining directions indicated in Figure 1. 6.2.6 Requirements On completion of the test, the IA shall be intact. Any visible damage shall be noted. The unit under test shall continue to be made to undergo the test programme in accordance with Table 1, even if there is visible damage
47、. It is permissible to repair any IA damage that prevents mounting, in order that the test can proceed. 6.3 Mechanical impact test 6.3.1 Purpose The purpose of this test is to determine whether the complete IA experiences any detrimental effect when subjected to a series of shock impacts at normal a
48、nd extreme temperatures. 6.3.2 Equipment A climatic chamber capable of controlling the test conditions according to 6.3.4 shall be used. A shock testing machine that allows fastening of an IA to its fixture or table shall be used. The characteristics of the shock testing machine shall be such that i
49、t can be determined whether the true value of the actual pulse as measured in the intended direction at the check point is within the tolerances required by Figure 3. The check point is a fixing point of the IA nearest the centre of the table surface at the shock testing machine, unless there is a fixing point with a more rigid connection to the table, in which case th
