A5033420731- Welding Techniques and Residual Stresses
- Laser Material Processing Techniques
- Additive Manufacturing Materials and Processes
- Aluminum Alloy Microstructure Properties
- Advanced Surface Polishing Techniques
- Quantum Dots Synthesis And Properties
- Advanced Fiber Laser Technologies
- Advanced Welding Techniques Analysis
- Advanced Photocatalysis Techniques
- Laser-Matter Interactions and Applications
- Metal and Thin Film Mechanics
- Electrophoretic Deposition in Materials Science
- Advanced X-ray and CT Imaging
- Laser and Thermal Forming Techniques
- Laser-Plasma Interactions and Diagnostics
- Hydrogen embrittlement and corrosion behaviors in metals
Friedrich-Alexander-Universität Erlangen-Nürnberg
2019-2024
Advanced Optical Technologies (United States)
2024
Schiller International University
2022
Laser welding of copper is being used with increasing demand for contacting applications in electric components such as batteries, power electronics, and drives. With its local, non-contact energy input high automation capability enabling reproducible weld quality, this joining technology represents a key enabler future mobility systems. However, major challenge process design the combination efficiency precise guidance terms seam depth defect prevention (i.e., spatter melt ejections) due to...
We demonstrate pulse compressibility from 840 fs to 38 of 10 mJ pulses a thin-disk amplifier at repetition rate 3 kHz after nonlinear broadening in multipass cell. In addition, the temporal-intensity contrast is enhanced via ellipse rotation more than factor 50 with an optical efficiency 56%. believe this first published experimental combination cell-based compression and rotation-based enhancement preserving both beam quality.
Laser beam microwelding is a precise technique for joining miniature metal components with high feed rates, which crucial productivity. However, rates provoke humping formation—periodic beadlike protuberances along the weld seam—that compromise integrity. While has been associated keyhole transition from narrow to an elongated shape using standard laser intensity distributions (e.g., Gaussian, top-hat), impact of complex profiles, like ring-shaped distributions, remains less understood. In...
Abstract Laser beam welding (LBW), as a non‐contact process with short cycle times and small heat affected zone, is key technology for automated metal fabrication. Despite its efficiency, the susceptibility of certain alloys to solidification cracks remains significant challenge. These emerge in transition zone between liquid solid phases during process. Thermo‐fluid dynamic processes within melt pool play crucial role crack formation LBW, influencing distribution, mass transport,...