Road vehicle - Airbag components - Part 2: Testing of airbag modules
1 Scope
This part of GB/T 19949 establishes uniform test methods and specifies environmental procedures and requirements for airbag modules in road vehicles.
Part 3 of GB/T 19949 covers testing of inflator assemblies.
2 Normative references
The following standards contain provisions which, through reference in this part of GB/T 19949, constitute provisions of this part. For dated references, subsequent amendments (excluding corrections) to, or revisions, of any of these publications do not apply.However, all parties coming to an agreement according to this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest editions apply to this part.
GB/T 19949.1 Road vehicle-Airbag components-Part1: Vocabulary (GB/T 19949.1-2005, ISO 12097-1:2002, IDT)
ISO 6487 Road vehicles - Measurement techniques in impact tests - Instrumentation
ISO 12103-1 Road vehicles - Test contaminants for filter evaluation - Part 1: Arizona test dust1)
3 Terms and definitions
For the purposes of this part of GB/T 19949, the definitions given in GB/T 19949.1 and the following definitions apply.
3.1
airbag module
assembly consisting of at least an inflator assembly and a bag with a cover if applicable.
3.1.1
driver airbag module
airbag module which is normally installed in the steering wheel.
3.1.2
front passenger airbag module
airbag module which is normally installed ahead of the front seat passenger
3.2
unexposed sample
test sample not subjected to environmental testing. (Also referred to as baseline.)
3.3
exposed sample
test sample subjected to environmental testing.
3.4
intact
state of the test sample after completion of the test in which the sample is sufficiently undamaged to enable the test sequence to continue.
4 General test conditions
Caution: There is a possibility of accidental firing of the airbag during any of the tests described in this part. Appropriate precautions should therefore be taken both in terms of handling the module and in terms of the design of test equipment.
4.1 Purpose of environmental testing
Environmental tests simulate the effects of environmental loads on the airbag module with respect to its functional behaviour and service life. The tests are based on the typical life cycle of an airbag module covering shipping, storage, mounting into the vehicle and 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 and cold, humidity, sunlight, dust and corrosive agents.
Simulating the total service life may require more severe test levels than those seen in real world conditions to accelerate ageing and degradation processes.
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
airbag module
driver airbag module
front passenger airbag module
unexposed sample
exposed sample
intact
4 General test conditions
4.1 Purpose of environmental testing
4.2 Test sequence
4.3 Measurements and test report
4.4 Test procedures
5 Environmental testing
5.1 Drop test
5.2 Mechanical impact test
5.3 Dust test
5.4 Simultaneous vibration temperature test
5.5 Thermal humidity cycling test
5.6 Salt spray test
5.7 Solar radiation simulation test
5.8 Temperature shock test
6 Performance testing
6.1 Static deployment test
6.2 Tank test
6.3 Bag test
Annex A (Normative) Determination of temperature build-up time te
Annex B (Informative) Origin of environmental test procedures
Bibliography
