An Investigation of Gas-Powder Flow in Laser-Based Direct Metal Deposition
| dc.creator | Zekovic, Srdja | |
| dc.creator | Dwivedi, Rajeev | |
| dc.creator | Kovacevic, Radovan | |
| dc.date.accessioned | 2020-03-05T18:47:17Z | |
| dc.date.available | 2020-03-05T18:47:17Z | |
| dc.date.issued | 2006-09-14 | |
| dc.description.abstract | Laser-Based Direct Metal Deposition (LBDMD) is a blown-powder laser deposition process which can produce fully-dense and metallurgicaly sound parts by a layered manufacturing method. Since a deposition head equipped with discontinuous radially symmetric nozzles has the potential to be tilted without influence of the gravity on the powder stream shape, it can be used for multi-axis deposition. The shape of the gas-powder stream with respect to the shape of laser beam and the size of the molten pool, have a large influence on the size and shape of the buildup. They determine the geometrical accuracy and the surface quality of the buildup. This paper examines gas-powder flow from radially symmetric nozzles using computational fluid dynamics method. For verification purpose the powder flow was investigated by a visualization method and powder concentration distribution was analyzed using image processing technique. The obtained results are in good agreement with numerical model. | en_US |
| dc.description.department | Mechanical Engineering | en_US |
| dc.identifier.uri | https://hdl.handle.net/2152/80141 | |
| dc.identifier.uri | http://dx.doi.org/10.26153/tsw/7162 | |
| dc.language.iso | eng | en_US |
| dc.relation.ispartof | 2006 International Solid Freeform Fabrication Symposium | en_US |
| dc.rights.restriction | Open | en_US |
| dc.subject | Laser-Based Direct Metal Deposition | en_US |
| dc.title | An Investigation of Gas-Powder Flow in Laser-Based Direct Metal Deposition | en_US |
| dc.type | Conference paper | en_US |