Title:	Thermal signature of LIPSS formation revealed by infrared diagnostics
Authors:	Martan, Jiří Ballardin Beltrami, Carlos Hauschwitz, Petr Moskal, Denys Bičištová, Radka Honner, Milan Brodsky, Alexander Lang, Vladislav
Citation:	MARTAN, J. BALLARDIN BELTRAMI, C. HAUSCHWITZ, P. MOSKAL, D. BIČIŠTOVÁ, R. HONNER, M. BRODSKY, A. LANG, V. Thermal signature of LIPSS formation revealed by infrared diagnostics. In Procedia CIRP. Erlangen: ELSEVIER, 2022. s. 588-591. ISBN: neuvedeno , ISSN: 2212-8271
Issue Date:	2022
Publisher:	ELSEVIER
Document type:	konferenční příspěvek ConferenceObject
URI:	2-s2.0-85141899931 http://hdl.handle.net/11025/51629
ISBN:	neuvedeno
ISSN:	2212-8271
Keywords in different language:	laser surface nanostructuring;temperature measurement;heat accumulation;process monitoring and control;multibeam
Abstract in different language:	Formation of Laser Induced Periodic Surface Structures (LIPSS) is a very interesting phenomenon. As the process is now moving towards the industry for the production of functional surfaces, a monitoring technique for online process control is needed. In the present work, the process was investigated for the first time using fast infrared radiometry. An advanced multi-beam laser system with 2601 beams using DOE and 200 W picosecond laser was used. Heat accumulation was measured during the 50 pulses of LIPSS fabrication on steel for fluences from 0.07 to 0.31 J/cm2 and frequency 50 kHz. Interestingly, on the cooling part of the curves, plateaus were observed after each laser pulse, for high pulse energies even double plateaus. The observed shapes of the signal evolution in time represent thermal signature of the LIPSS formation. The results are promising that process control will be feasible by monitoring heat accumulation or plateau length.
Rights:	© authors
Appears in Collections:	Konferenční příspěvky / Conference papers OBD

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