Thermography

Thermographic measurements are used for qualitatively assessing the thermal insulation of the railway car body and for assessing and analysing the surface temperature distribution in the comfort zone (e.g. temperature at window frame).

The tests are performed under controlled environmental conditions. Thermographic images of the outer surface of the vehicle (entire car body height) can only be recorded with the help of a mirror, because of the lack of space inside the climatic wind tunnels. The outer surface is therefore recorded section by section, the individual images being then combined into a single image for each vehicle wall using a computer.

The thermal camera also allows the detection of faults in electrical equipment, which result in overheating of components. In addition to this, video sequences can be taken to visualise heating or cooling processes in different assemblies.

Spraytec droplet measuring instrument

Special measurements using the spray rig require the droplet size and distribution to be recorded accurately. The climatic wind tunnel is equipped with a system for spray and aerosol measurements with a measuring range from 0.5 µm to 200 µm (Spraytec by Malvern, type TRS5A2C, IP 65).