A5036168234- Laser Material Processing Techniques
- Welding Techniques and Residual Stresses
- Advanced Surface Polishing Techniques
- Laser Design and Applications
- High-Temperature Coating Behaviors
- Semiconductor Lasers and Optical Devices
- Photonic Crystal and Fiber Optics
- Solid State Laser Technologies
- Advanced Welding Techniques Analysis
- Optical measurement and interference techniques
- Laser and Thermal Forming Techniques
- Advanced machining processes and optimization
- Advanced Machining and Optimization Techniques
- Industrial Vision Systems and Defect Detection
S&F Systemtechnik (Germany)
2021-2024
TRUMPF (Germany)
2017-2024
University of Stuttgart
2017-2020
The technology of hairpin welding, which is frequently used in the automotive industry, entails high-quality requirements welding process. It can be difficult to trace defect back affected weld if a non-functioning stator detected during final inspection. Often, visual assessment cooled seam does not provide any information about its strength. However, based on behavior especially spattering, conclusions made quality weld. In addition, spatter component have serious consequences. this paper,...
Abstract High-speed videos of the cut front and spectrometric measurements were applied to detect local vaporization on at high cutting speeds show that with increasing feed rate, temporally short intense flashes are generated by phenomena upper part front. The latter accompanied emergence an interrupted striation pattern surface edge. findings support assumption might be cause for reduced quality process elevated speeds. observation serves as a diagnostic method anticipate fail pattern.
In the present paper we advances on BrightLine Weld technology addressing following three topics: A) novel implementation of beam shaping CW high power laser in visible wavelength range. Due to higher absorption this range, applications related welding copper, copper alloys and gold profit from modality. We demonstrate thereby increase process window with a 3kW at 515nm, B) combination multi-spot for casted aluminum parts. With presented strategy gas-tight parts like electronics housings,...
Laser oxygen cutting is one of the most established laser based manufacturing processes and mainly used for thick metal sheets mild steel up to a thickness 25 mm. Besides local absorption beam, exothermal FeO oxidation reaction iron provides additional heat input process. A lack energy can lead dross formation decreased cut quality. detailed, phenomenological description melt flow direction front geometry help understanding improving stability process at limit. Until now, correlation in case...
We report technological advances in thin-disk laser technology enabling further scaling of average output power and beam quality. A newly developed resonator design serves as a universal building block for industrial-grade lasers from 6 to 24 kW. The robust allows levels beyond 12 kW single disk with parameter product (BPP) ~ 4 mm*mrad. By polarization combining the two resonators, i.e. disks, can be doubled up while maintaining good mentioned properties render new TruDisk ideal...
Advancements in laser material processing, particularly EV battery production, require innovative solutions. Dynamic beam control of fiber lasers has emerged as a promising technology to meet these needs. This contribution examines the challenges production and solutions provided by lasers. Through dynamic control, guided enable precise efficient welding copper aluminum components. Adjustable parameters such intensity, shape, size enhance precision, productivity, utilization. These...
Abstract The electric vehicle (EV) industry is witnessing unprecedented growth, driven by the global shift towards sustainable transportation. Laser welding has emerged as an important technology in this sector, offering a welcome way of reducing production costs and expanding options manufacturing new batteries e‐drive technology. While laser sources have rapidly evolved, introducing power levels 24 kW beyond, efficient application such high processes remains challenge.
The automotive industry, especially electric vehicles, opens a large variety of new laser-based applications. Particularly, the importance high reflective materials such as copper and aluminum increased lead to technology developments in laser devices processing. key factors are brilliance, wavelengths, beam shaping, well sensors. This contribution highlights latest achievements trends area welding components widely used E-Mobility industry. It is shown that green wavelength supports...