Monitoring of laser beam welding

To keep the quality of a weld seam constant, it is important to register the process of welding as possible properly. Therefore the registration has to take place on a rather short time scale, ms or faster, and with a very high spacial resolution.By means of emitted IR irradiation the quality of the weld seam can be made.

The experimantal set-up is as follows:

Figure of the experimental set-up.

Different materials and configuration of conjunctions are tested with this set-up in co-operation with Institut für Strahlwerkzeuge Stuttgart, Germany.

Intensity profiles of an aluminium sample with an overlapping conjunction. Chosen images represent snapshots of some profiles.