DS/EN 61373:2010/AC:2017

Railway applications - Rolling stock equipment - Shock and vibration tests

This International Standard specifies the requirements for testing items of equipment intended*for use on railway vehicles which are subsequently subjected to vibrations and shock owing to*the nature of railway operational environment. To gain assurance that the quality of the*equipment is acceptable, it has to withstand tests of reasonable duration that simulate the*service conditions seen throughout its expected life.*Simulated long-life testing can be achieved in a number of ways each having their associated*advantages and disadvantages, the following being the most common:*a) amplification: where the amplitudes are increased and the time base decreased;*b) time compression: where the amplitude history is retained and the time base is decreased*(increase of the frequency);*c) decimation: where time slices of the historical data are removed when the amplitudes are*below a specified threshold value.*The amplification method as stated in a) above, is used in this standard and together with the*publications referred to in Clause 2; it defines the default test procedure to be followed when*vibration testing items for use on railway vehicles. However, other standards exist and may be*used with prior agreement between the manufacturer and the customer. In such cases test*certification against this standard will not apply. Where service information is available tests*can be performed using the method outlined in Annex A. If the levels are lower than those*quoted in this standard, equipment is partially certified against this standard (only for service*conditions giving functional test values lower than or equal to those specified in the test report).*Whilst this standard is primarily concerned with railway vehicles on fixed rail systems, its wider*use is not precluded. For systems operating on pneumatic tyres, or other transportation*systems such as trolleybuses, where the level of shock and vibration clearly differ from those*obtained on fixed rail systems, the supplier and customer can agree on the test levels at the*tender stage. It is recommended that the frequency spectra and the shock duration/amplitude*be determined using the guidelines in Annex A. Equipment tested at levels lower than those*quoted in this standard cannot be fully certified against the requirements of this standard.*An example of this is trolleybuses, whereby body-mounted trolleybus equipment could be*tested in accordance with category 1 equipment referred to in the standard.*This standard applies to single axis testing. However multi-axis testing may be used with prior*agreement between the manufacturer and the customer.*The test values quoted in this standard have been divided into three categories dependent only*upon the equipmentÆs location within the vehicle.*Category 1 Body mounted*Class A Cubicles, subassemblies, equipment and components mounted directly on or*under the car body.