Tests

Never leave anything to chance: test, test and test again!

We give top priority to operating reliability and functionality with regard to the TRACKAIR modules! ALMiG regards extensive calculations, complex simulations and ample endurance tests under extreme conditions as a matter of course prior to producing a 0 series.

We perform these calculations/tests on our premises and in collaboration with specialised test laboratories and renowned universities. Only when all those involved give the go-ahead, ourdevelopment engineers and production initiate the next steps.

1 Simulation of snow particle trajectories with the anticipated particle residence time in the underfl oor area. The graphic representations show forward travel (80 km/h) on a free stretch during wind and snowfall from the front by way of example. The quantity of snow introduced is equivalent to a snowfall rate of 30 cm per hour.

2 This picture shows the strength calculation for the frame of a modified screw compressor, i.e. for a „detailed FEM model“. The static load cases were chosen in accordance with DIN 12663 for category III passenger vehicles (underground and suburban railway vehicles). The calculated result according to the FEM directive means: „This design is sufficiently dimensioned to bear the calculated test loads.“

3 In this shake test the life cycle (total service life) of the TRACKAIR module is simulated. This test carried out under extreme conditions is shortened to approximately 20h fatigue loading; according to DIN EN 61373 it serves as practical proof of whether the FEM calculation is correct.

4 Our modules are put through their paces in appropriate climate chambers. The cold test (in this case down to -30 °C) is intended to assist in optimising the starting action of the modules, ensuring the functional safety during drive mode and selecting the optimal coolant.