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Proceedings Paper

Investigations of high power laser beam interaction with material by means of hybrid FVM-FEM and digital image correlation methods
Author(s): M. Kujawińska; P. Łapka; M. Malesa; K. Malowany; M. Prasek; J. Marczak
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Paper Abstract

The paper presents the new approach to the analysis of interaction between a high power laser beam and matter. The method relies on the combined experimental-numerical spatio-temporal analysis of temperature, displacement and strain maps which are generated at a surface of an object illuminated by a high power laser beam. Transient heat transfer numerical simulations were carried out applying the FVM, while the quasi-transient structural analyses were performed with the aid of the FEM. The displacement maps were captured by means of 3D Digital Image Correlation method, and temperature maps were provided by a high speed IR camera. The experimental data are compared to the initial model of laser induced heat transfer in an object and resulting displacements/strains. The first approach to hybrid experimental-numerical method which aims in indirect determination of laser beam profile is described. The monitoring of displacement/strain maps directly at an illuminated object may be also used for a structural integrity analysis of a target. In the paper at first the numerical simulations applied to model laser beam thermal interaction with solid bodies are presented. Next the laboratory experimental stand is described and the results of the initial tests performed at aluminum and bronze samples are shown and compared with numerical simulations. The advantages and disadvantages of the proposed methodology are discussed in relation to the two applications mentioned above.

Paper Details

Date Published: 8 December 2016
PDF: 11 pages
Proc. SPIE 10159, Laser Technology 2016: Progress and Applications of Lasers, 1015916 (8 December 2016); doi: 10.1117/12.2265745
Show Author Affiliations
M. Kujawińska, Warsaw Univ. of Technology (Poland)
P. Łapka, Warsaw Univ. of Technology (Poland)
M. Malesa, Warsaw Univ. of Technology (Poland)
K. Malowany, Warsaw Univ. of Technology (Poland)
M. Prasek, Warsaw Univ. of Technology (Poland)
J. Marczak, Military Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 10159:
Laser Technology 2016: Progress and Applications of Lasers
Ryszard S. Romaniuk; Krzysztof Kopczynski; Jan K. Jabczyński; Zygmunt Mierczyk, Editor(s)

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