Zobrazeno 1 - 10
of 16
pro vyhledávání: '"C.E. Protasov"'
Publikováno v:
Materials Science Forum. 989:806-810
The processes occurring during selective laser melting were studied with a high-speed CCD camera. In order to record all optical in-homogeneities, the camera was integrated into optical arrangement, that realized the Schlieren-method. Within the expe
Publikováno v:
Journal of Thermal Spray Technology. 26:648-660
The laser treatment processes are specified due to the laser-matter interaction instabilities. Modern additive manufacturing technologies such as selective laser melting provide layer-by-layer part growth with continuous operation for hours and days
Publikováno v:
International Journal of Heat and Mass Transfer. 104:665-674
Fused silica is promising for layer-by-layer additive manufacturing by selective laser melting of its powder. This material is resistant to thermal shocks associated with the laser treatment. Experiments show feasibility of such a process. However, t
Autor:
C.E. Protasov, Andrey V. Gusarov
Publikováno v:
Procedia IUTAM. 23:147-154
The influence of the laser-beam radial distribution of the energy flux density is theoretically studied for the Gaussian distribution (mode TEM00), and doughnut distribution of TEM01* mode for the values of the Peclet number from 0 to 3. The model of
Publikováno v:
Physics Procedia. 83:825-832
High local temperature gradients occur at additive manufacturing by selective laser melting of powder. This gives rise to undesirable residual stresses, deformations, and cracks. To understand how to control the formation of the residual stresses, a
Publikováno v:
Physics Procedia. 83:1013-1020
Silica glass is an inorganic dielectric material that can be used for laser beam melting without cracking. However, the extremely high viscosity makes consolidation of powder very slow. To study the dynamics of consolidation, a 10.6 μm laser beam wa
Publikováno v:
The International Journal of Advanced Manufacturing Technology. 85:1461-1469
Selective laser melting (SLM) is recognized for additive manufacturing from metals and alloys. Application of this technique to ceramic materials could also be promising. However, ceramics are brittle and often crack during this process. Silica glass
Publikováno v:
MATEC Web of Conferences, Vol 224, p 01060 (2018)
The paper presents the results of optical diagnostics of evaporation and displacement of powder fractions during the formation of a single track in the process of selective laser melting. The velocity of the powder fractions is estimated. It was defi
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