Femtosecond laser drilling 100 μm diameter micro holes with …
2024年1月1日 · In this study, we propose a two-step femtosecond laser drilling method to produce cylindrical micro holes with diameters of ∼100 μm, aspect ratios >20, and near-zero taper angle in Inconel 718 plates.
Optimization of multistage femtosecond laser drilling process …
2022年12月1日 · In this study, a femtosecond laser machining process optimization strategy coupled with TTM-MD model, machine learning and a high-throughput optimization algorithm is proposed.
Femtosecond laser drilling in superalloy with water-based …
2023年1月15日 · Combining the advantages of water assistance and magnetic assistance in femtosecond laser drilling, this paper used water-based magnetic assistance femtosecond laser drilling method, and used laser layered ring trepanning method in combination with high-speed scanning galvanometer technology.
Femtosecond laser drilling of high-aspect ratio ... - Springer
2011年2月18日 · A femtosecond laser is used to fabricate microchannels with high aspect ratios by laser direct ablation. Drilling both in air and in water is investigated. It is found that at low pulse energy, drilling in water can generate channels with high aspect ratios.
Design of a Femtosecond Laser Percussion Drilling Process for Ni …
2023年11月17日 · Femtosecond laser drilling is extensively used to create film-cooling holes in aero-engine turbine blade processing. Investigating and exploring the impact of laser processing parameters on achieving high-quality holes is crucial.
Femtosecond laser material processing has been demonstrated as a promising method for precise micro/nano material processing due to nonlinear multi-photon absorption and minimal collateral damage [1, 2].
Experimental research on ultrasound-assisted underwater femtosecond …
2019年2月5日 · In order to diminish the occurrence of cavitation bubbles during the liquid-assisted laser machining, ultrasound-assisted underwater femtosecond laser drilling on stainless steel is adopted. This method greatly diminishes the optical disturbance of cavitation bubbles.
Femtosecond Laser Drilling of Cylindrical Holes for Carbon …
2021年5月16日 · The experimental results show that the cylindrical hole of CFRP with a depth-to-diameter ratio of about 3:1 (taper < 0.32∘, HAZ < 10 m) was obtained by using femtosecond laser and a spiral drilling apparatus.
Advances in Femtosecond Laser GHz-Burst Drilling of Glasses
2023年5月30日 · In this study, we present our latest results on top-down drilling in glasses, focusing specifically on the influence of burst duration and shape on the hole drilling rate and the quality of the drilled holes, wherein holes of very high quality with a smooth and glossy inner surface can be obtained.
Water-assisted femtosecond laser drilling of 4H-SiC to
2020年11月21日 · In this study, the 515-nm wavelength femtosecond laser drilling of high-aspect-ratio through micro-holes on single-crystal SI-type 4H-SiC in air and under water was carried out.
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