In-situ diagnostics and control of melt and solidification dynamics during laser beam cutting (A08)

• Subject Area: Joining and Separation Technology
• Term: since 2014
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 236616214

The control of the melting process on the cutting front and the solidification process on the cutting flanks is to be achieved in the third phase of the subproject specifically by feedback of sensor signals to be assigned to the sub-processes to manipulated variables of the laser beam and the cutting gas flow. This is in order to ensure damping of instabilities and precise cutting flank shaping. In particular, the knowledge gained in phase 2 about the stabilizing effect of acoustic resonances in the cutting kerf will be used to increase the flow efficiency and improve the flow stability by adjusting the nozzle/joint impedance.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1120: Precision manufacturing by controlling melt dynamics and solidification in production processes
• Applicant Institution: Rheinisch-Westfälische Technische Hochschule Aachen
• Project Heads: Professor Dr.-Ing. Arnold Gillner, since 7/2018; Professor Dr. Reinhart Poprawe, until 6/2018