Novel strategy for ultrafast pulsed laser micromachining of rotational symmetric metallic parts

Krämer, Thorsten; Remund, Stefan M.; Gafner, Markus; Zwygart, Daniel; Neuenschwander, Beat; Holtz, R.L.; Witte, Reiner; Dury, Noémie

doi:10.1016/j.procir.2018.08.076

Cited by 4 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The straight-forward approach is to use a galvanometric scanner to perform this movement [ 26 ]. Additionally, solutions using a rotational axis in combination with different technologies such as linear stages [ 27 ], galvanometric scanners [ 28 ], or acousto-optic deflectors (AODs) [ 29 ] are used to allow such 2D movement. In the z-direction, the material is removed layer by layer, resulting in a so-called 2.5D process [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Review on Experimental and Theoretical Investigations of Ultra-Short Pulsed Laser Ablation of Metals with Burst Pulses

et al. 2021

Self Cite

View full text Add to dashboard Cite

Laser processing with ultra-short double pulses has gained attraction since the beginning of the 2000s. In the last decade, pulse bursts consisting of multiple pulses with a delay of several 10 ns and less found their way into the area of micromachining of metals, opening up completely new process regimes and allowing an increase in the structuring rates and surface quality of machined samples. Several physical effects such as shielding or re-deposition of material have led to a new understanding of the related machining strategies and processing regimes. Results of both experimental and numerical investigations are placed into context for different time scales during laser processing. This review is dedicated to the fundamental physical phenomena taking place during burst processing and their respective effects on machining results of metals in the ultra-short pulse regime for delays ranging from several 100 fs to several microseconds. Furthermore, technical applications based on these effects are reviewed.

show abstract

Section: Introductionmentioning

confidence: 99%

Review on Experimental and Theoretical Investigations of Ultra-Short Pulsed Laser Ablation of Metals with Burst Pulses

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…Combining laser beams with high quality, different optical configurations, and the possibilities of combining the control of the laser with 5-or 7-axis machines, it is possible to define protocols to machine samples with very different 3D shapes. 21,22 Also an adequate combination of focusing lenses allows to machining the inner surface of pieces with complex shapes, for instance, calibers with high aspect ratios. 23 Data obtained from the clinic regarding the survival rates of all-ceramic materials reveal that their restoration is susceptible to breakage due to repeated occlusal loading.…”

Section: Introductionmentioning

confidence: 99%

“…Laser technologies are evolving very fast and new opportunities are opening to apply them not only in planar samples but also in samples with complex geometries. Combining laser beams with high quality, different optical configurations, and the possibilities of combining the control of the laser with 5‐ or 7‐axis machines, it is possible to define protocols to machine samples with very different 3D shapes 21,22 . Also an adequate combination of focusing lenses allows to machining the inner surface of pieces with complex shapes, for instance, calibers with high aspect ratios 23 …”

Section: Introductionmentioning

confidence: 99%

Improvement of flexural bond strength of zirconia‐resin cement by surface patterning using sub‐nanosecond UV laser

Akay

Turan

Karakış

et al. 2020

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

Zirconia is a dental material that shows excellent biocompatibility and high strength in clinical applications. This study aims to evaluate the effects of ultrafast laser applications. The surface nanostructures were classified into three groups. Group 1 was generated using the burst mode, with three different distances between dots: 52 µm (Group 1a), 104 µm (Group 1b), and 156 µm (Group 1c). Group 2 was processed using the scanning mode configuration, with a set of parallel lines. Group 3 was also processed using this scanning configuration creating a set of square-shaped patterning. Group 4 was the control group. After the surface treatments, a pair of zirconia specimens was bonded end to end with resin cement. Flexural bond strength (FBS) test was applied in a universal test machine. Multiple comparisons were performed using a one-way analysis of variance and the Tukey's HSD test. All the samples that were treated with the laser showed higher FBS values than the untreated surface. Using the burst mode, preformed circular-shaped surface on an angle of 90 0 at 52 µm distance (Group 1a) showed the highest FBS values among all groups (p < .05). Groups 2 and 3 had significantly higher values than 1b and 1c.

show abstract

Ultrafast laser manufacturing: from physics to industrial applications

et al. 2021

View full text Add to dashboard Cite

Novel strategy for ultrafast pulsed laser micromachining of rotational symmetric metallic parts

Cited by 4 publications

References 3 publications

Review on Experimental and Theoretical Investigations of Ultra-Short Pulsed Laser Ablation of Metals with Burst Pulses

Review on Experimental and Theoretical Investigations of Ultra-Short Pulsed Laser Ablation of Metals with Burst Pulses

Improvement of flexural bond strength of zirconia‐resin cement by surface patterning using sub‐nanosecond UV laser

Ultrafast laser manufacturing: from physics to industrial applications

Contact Info

Product

Resources

About