Investigation of Nonlinear Dynamical Effects for the Optimization of the Machining Quality of Laser Welding Processes

Project Status: finished

Members

• Dr.-Ing. Ralph Hohenstein
• M.Sc. B.Sc. Inf. Felix Agakov

Within this project, the influence of different machining parameters, as laser power, feed rate, focus position, or wavelength of the laser light, has been investigated. The time-fequency spectra of a Nd:YAG-laser welding process is shown in the figure below. It is possible to separate different regions within the time-frequency plane. Similar structures have been identified for laser welding processes using a C0₂-laser. This indicates that laser welding dynamics are governed by a universal law.