Influence Of Laser Beam Intensity On Geometry Parameters Of A Single Surface Texture Element

Abstract

Laser surface texturing is used more and more often in modern machines for the implementation of variety of purposes such as for example intensification of lubrication, intensification of heat exchange, stimulation of microfluidics, increasing the chemical activity of the surface. Owing to the development of technologies using a concentrated energy flux, including laser microprocessing, it has become feasible. The present paper concentrates on the selection of parameters of laser microprocessing with picosecond pulses so as to obtain the highest efficiency and accuracy of the execution of a single texture element.Keywords: laser microprocessing, laser surface texturing (LST), laser ablation, ultrashort pulses W nowoczesnych maszynach dla realizacji różnych celów m.in. takich jak przykładowo intensyfikacja smarowana, intensyfikacja wymiany ciepła, stymulowanie mikroprzepływów, zwiększenie aktywności chemicznej powierzchni; coraz częściej stosuje się teksturowanie powierzchni. Stało się to możliwe dzięki rozwojowi technologii wykorzystujących skoncentrowany strumień energii, do których należy mikroobróbka laserowa. Tematyka opracowania koncentruje się na analizie parametrów mikroobróbki laserowej impulsami pikosekundowymi w celu osiągnięcia jak największej wydajności i dokładności wykonania pojedynczego elementu tekstury.

Metal expansion joints manufacturing by a mechanically assisted laser forming hybrid method – concept

“…In the aspect of mechanical engineering, the author of this publication is most interested in laser technologies utilised in the machine and metal manufacturing industries. Engineering practices of laser beam utilisation are being used in such technologies as cutting, welding and surface treatment -examples can be found in the literature (Antoszewski, 2015Banak, 2017;Danielewski, 2020;Nowakowski, 2016;Nowakowski, 2017;Radek, 2014;(Tofil, 2021;Witkowski, 2020).…”

Surface Laser Micropatterning of Polyethylene Terephthalate (PET) to Increase the Shearing Strength of Adhesive Joints

“…The use of lasers for this purpose seems to be justified. The impact of a laser beam on the surface of different materials was the subject of many scientific manuscripts presented in numerous publications [10,11]. In these publications was discussed the influence of laser parameters (such as light wavelength, frequency of impulses, duration of the impulse, etc.)…”

The Efficiency of UV Picosecond Laser Processing in the Shaping of Surface Structures on Elastomers

“…In scientific literature, there are an increasing number of papers related to laser processing of elastomeric and generally polymeric materials [ 1 , 2 , 3 , 4 ]. Laser microprocessing of elastomeric materials [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ] is an alternative to lithographic methods; it belongs to direct methods, using the sources of laser radiation, usually: CO 2 (wavelength 10.6 μm—medium infrared) and Nd-YAG (consecutive wave harmonics: 1064, 532, 326, and 266 nm—from near infrared to ultraviolet), also including ultrashort pulse lasers.…”