Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).
Please note that all times are shown in the time zone of the conference. The current conference time is: 3rd May 2025, 06:41:28am CEST
Plenary Talk: Uncover process and defect dynamics during additive manufacturing with X-ray vision
Chu Lun Alex Leung1,2
1Department of Mechanical Engineering, University College London, London, UK; 2Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Oxfordshire UK
Laser powder bed fusion (LPBF) is a digital manufacturing technology that enables the production of components with unparalleled design freedom and complex geometry from digital designs. LPBF has ubiquitous product applications across different industries, including aerospace, biomedical, energy, marine, and robotic. However, it remains challenging to qualify the process and products of LPBF due to the complex laser-material interactions and unpredictable nature of the process dynamics that occur on the microsecond and micrometre scales. In this seminar, I will present the latest work from my research group on these interactions and process dynamics in LPBF. Our group uses synchrotron X-rays combined with a Quad-laser in situ and operando metal 3D printer, and digital twin models to reveal, quantify, and explain these process dynamics during LPBF. The insights gained from our research are transforming our fundamental understanding of LPBF across various materials, contributing towards process and product qualification.
11:00am - 11:30am
Plenary Talk: Innovative Beam Shaping Solutions for E-Mobility: from modelling to process control
Barbara Previtali
Politecnico di Milano, Department of Mechanical Engineering, SITEC - Laboratory for Laser Applications, Via Giuseppe La Masa 1, 20156 Milan, Italy
Electric mobility is posing new challenges to laser technologies, increasingly adopted as flexible and digitally integrated tools. The wide availability of laser sources, and beam shaping solutions makes selecting the most suitable configuration complex. This contribution highlights the need for a new metric to define beam shaping solutions, considering the three laser beam dimensions: space, time, and wavelength. Recent application cases are presented, including hairpin welding, zinc electrode via L-PBF, and lithium battery processing. These examples show the importance of selecting the beam shaping strategy and process parameters, which are increasing due to the rising number of variables. A 3D model of hairpin welding demonstrates how simulation supports optimal condition identification alongside experimentation. The talk concludes by discussing how sensing and monitoring, enriched by the dimensions introduced by beam shaping, support process understanding and detection of shifts from stable operation.
