The Xperience Days took place from September 29 to October 1. Three inspiring days filled with technology, knowledge sharing, and personal interactions.
The topics of this year’s Xperience Days were intelligent laser cutting, precise non-contact 3D measurement techniques, process monitoring, and additive manufacturing.
This year, Dr. Dominic Bartels and Carola Forster represented our team at the event. A particular highlight was Carola Forster’s presentation on Wednesday titled “DESY Research Results: Insights and Applications.”
The presentation showcased various findings from the Chair of Photonic Technologies, which were obtained using in-situ synchrotron imaging. The process-determining events during laser beam welding take place inside the metal components on a micrometer and microsecond scale and are therefore inaccessible to conventional measurement techniques. At beamline P07 of the PETRA III storage ring (DESY, Hamburg), the process zone is illuminated with high-energy synchrotron radiation during welding. Absorption- and propagation-based phase contrast techniques distinguish between the solid, liquid, and gaseous phases, enabling a single measurement to map the entire chain of events from energy injection to solidification.
Several studies have demonstrated the range of research questions that can be addressed using this method: keyhole dynamics during copper welding as a function of laser wavelength, and the formation of humping during micro-welding.