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Proceedings Paper

Evaluation of thermal behavior during laser metal deposition using optical pyrometry and numerical simulation
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Paper Abstract

3D mathematical model of non-stationary processes of heat and mass transfer was developed for additive manufacturing of materials by direct laser metal deposition. The model takes into account self-consistent dynamics of free surface, temperature fields, and melt flow speeds. Evolution of free surface is modelled using combined Volume of Fluid and Level-Set method. Article presents experimental results of the measurement of temperature distribution in the area of bead formation by direct laser metal deposition, using multi-channel pyrometer, that is based on two-color sensors line. A comparison of experimental data with the results of numerical modeling was carried out. Features of thermal dynamics on the surface of melt pool have been detected, which were caused by thermo-capillary convection.

Paper Details

Date Published: 26 June 2017
PDF: 7 pages
Proc. SPIE 10330, Modeling Aspects in Optical Metrology VI, 103301K (26 June 2017); doi: 10.1117/12.2270269
Show Author Affiliations
Alexander V. Dubrov, Institute on Laser and Information Technologies (Russian Federation)
Yuri N. Zavalov, Institute on Laser and Information Technologies (Russian Federation)
Fikret Kh. Mirzade, Institute on Laser and Information Technologies (Russian Federation)
Vladimir D. Dubrov, Institute on Laser and Information Technologies (Russian Federation)


Published in SPIE Proceedings Vol. 10330:
Modeling Aspects in Optical Metrology VI
Bernd Bodermann; Karsten Frenner; Richard M. Silver, Editor(s)

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