Enhanced Flexibility in Direct Laser Interference Patterning through Industrial Robot Integration
Year: 2024
Type: article
Abstract: Direct Laser Interference Patterning (DLIP) is a well-established method for surface functionalization, enhancing properties like friction, wetting, and bacteria repellence.Traditionally, DLIP uses transla-tional stage or scanner systems to move either the laser or the component, offering high processing velocities and precision.However, these methods face limitations with heavy 3D parts, such as form-ing tools, reducing the range of components and applications.The study presents a new DLIP ap-proach using an industrial robot, providing more freedom for treating large components with complex geometries.The DLIP tool, including the laser source, is attached to a robot arm.The laser delivers nanosecond pulses with up to 120 W power and 40 mJ pulse energies, designed to be lightweight and vibration-tolerant.The DLIP optics generate an elongated rectangular beam with a long depth of focus.Initial experiments structured stainless steel plates with a pulse frequency up to 800 Hz and 15 W power, with structuring velocities from 2 to 20 mm/s.Different structuring strategies were applied to punches, and their tribological performance in forming applications was compared to non-structured punches.The produced topographies are characterized using a confocal microscope.
Authors: Olawsky, Lukas, Moghtaderifard, Stephan, Baumann, Robert, Li, D., Kuhn, Clemens, Du, Keming, Soldera, Marcos, Fabián Lasagni, Andrés Fabián
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4405400624