Analysis of laser control effects for direct metal deposition process

2006 ◽  
Vol 20 (10) ◽  
pp. 1680-1690 ◽  
Author(s):  
Joohyun Choi ◽  
Yoonsang Chang
Keyword(s):  
Deposition Process ◽  
Metal Deposition ◽  
Direct Metal Deposition ◽  
Laser Control

Experimental and Numerical Analysis of the Powder Flow in a Multi-Channel Coaxial Nozzle of a Direct Metal Deposition System

2021 ◽  
Vol 143 (7) ◽  
Author(s):  
Piyush Pant ◽  
Dipankar Chatterjee ◽  
Sudip Kumar Samanta ◽  
Aditya Kumar Lohar
Keyword(s):  
Gas Flow ◽  
Flow Characteristics ◽  
Turbulence Models ◽  
Deposition Process ◽  
Metal Deposition ◽  
Direct Metal Deposition ◽  
Powder Flow ◽  
Coaxial Nozzle ◽  
Proposed Model ◽  
Blown Powder

Abstract The work explores the powder transport process, using numerical simulation to address the dynamics of the powder flow in an in-house built multi-channel coaxial nozzle of a direct metal deposition (DMD) system. The fluid turbulence is handled by the standard k–ɛ and k–ω turbulence models, and the results are compared in order to predict their suitability. An image-based technique using CMOS camera is adopted to determine the powder flow characteristics. The model is validated with the in-house experimental results and verified available results in the literature. The findings of this work confirms the application of the k–ω model for powder gas flow investigations in blown powder additive manufacturing (AM) processes due to its better predictive capability. The proposed model will assist in simulating the direct metal deposition process.

scholarly journals Influence of a pulsed laser regime on surface finish induced by the direct metal deposition process on a Ti64 alloy

2014 ◽  
Vol 214 (2) ◽  
pp. 485-495 ◽  
Author(s):  
Myriam Gharbi ◽  
Patrice Peyre ◽  
Cyril Gorny ◽  
Muriel Carin ◽  
Simon Morville ◽  
...  
Keyword(s):  
Surface Finish ◽  
Pulsed Laser ◽  
Deposition Process ◽  
Metal Deposition ◽  
Direct Metal Deposition ◽  
Ti64 Alloy

Laser beam analysis in direct metal deposition process

2005 ◽  
Vol 17 (3) ◽  
pp. 136-143 ◽  
Author(s):  
Huan Qi ◽  
Jyoti Mazumder ◽  
Larry Green ◽  
Gary Herrit
Keyword(s):  
Laser Beam ◽  
Deposition Process ◽  
Metal Deposition ◽  
Direct Metal Deposition ◽  
Beam Analysis
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