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 Computer Optics, 2016, Volume 40, Issue 5, Pages 679–684 (Mi co302)

OPTO-IT

Algorithm for calculation of the power density distribution of the laser beam to create a desired thermal effect on technological objects

S. P. Murzina, R. Bielakb, G. Liedlb

a Samara National Research University, Samara, Russia
b Vienna University of Technology, Vienna, Austria

Abstract: Based on the use of methods for solving the inverse problem of heat conduction, we developed an algorithm for calculating the power density distribution of the laser beam to create a desired thermal effect on technological objects. It was shown that the redistribution of power density of moving distributed surface heat sources can adjust the temperature distribution in the treated zone. The results of thermal processes calculation show the ability of the developed algorithm to create a more uniform temperature field across the width of the heat affected zone. Equalization of maximum temperature values is achieved in the center and on the periphery of the heat affected zone with an increase in the width of the regions, where required temperature is reached. The application of diffractive optical elements gives an opportunity to obtain the required properties of treated materials in the heat affected zone. The research performed has enabled parameters of the temperature field in chrome-nickel-molybdenum steel to be adjusted for laser heat treatment. In addition to achieving uniform temperature conditions across the width of the heat affected zone, the proposed approach allows the increase of the width of the isotherms of the temperature fields; this provides an opportunity to process a larger area per unit time at the same laser beam power.

Keywords: laser beam, power density distribution, formation, moving heat source, material, thermal effect.

 Funding Agency Grant Number Ministry of Education and Science of the Russian Federation This work was supported by the Ministry of Education and Science of the Russian Federation in the framework of the implementation of the Program “Research and development on priority directions of scientific-technological complex of Russia for 2014-2020”.

DOI: https://doi.org/10.18287/2412-6179-2016-40-5-679-684

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Accepted:30.10.2016
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Citation: S. P. Murzin, R. Bielak, G. Liedl, “Algorithm for calculation of the power density distribution of the laser beam to create a desired thermal effect on technological objects”, Computer Optics, 40:5 (2016), 679–684

Citation in format AMSBIB
\Bibitem{MurBieLie16} \by S.~P.~Murzin, R.~Bielak, G.~Liedl \paper Algorithm for calculation of the power density distribution of the laser beam to create a desired thermal effect on technological objects \jour Computer Optics \yr 2016 \vol 40 \issue 5 \pages 679--684 \mathnet{http://mi.mathnet.ru/co302} \crossref{https://doi.org/10.18287/2412-6179-2016-40-5-679-684}