| contributor author | Loh, Loong-Ee | |
| contributor author | Song, Jie | |
| contributor author | Guo, Fenglin | |
| contributor author | Bi, Guijun | |
| date accessioned | 2019-02-28T11:01:10Z | |
| date available | 2019-02-28T11:01:10Z | |
| date copyright | 6/29/2018 12:00:00 AM | |
| date issued | 2018 | |
| identifier issn | 0022-1481 | |
| identifier other | ht_140_08_082302.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4251784 | |
| description abstract | Selective laser melting (SLM) has received increasing attention in recent years as an innovative manufacturing technique. The present SLM process only uses a single laser beam to melt and consolidate the powder, which may result in excessive evaporation. In this paper, a double beam scanning strategy is investigated in which the first laser beam preheats the powder just below the sintering point while the second laser beam completely melts the powder. An analytical solution on the temperature distribution heated by a moving laser beam in the powder-bulk domain is derived and is used to determine the critical radius of the first laser beam. The single and double beam scanning strategies are compared numerically and it is found that double beam scanning can effectively reduce material evaporation and increase the amount of powder melted in the SLM process. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Analytical Solution of Temperature Distribution in a Nonuniform Medium Due to a Moving Laser Beam and a Double Beam Scanning Strategy in the Selective Laser Melting Process | |
| type | Journal Paper | |
| journal volume | 140 | |
| journal issue | 8 | |
| journal title | Journal of Heat Transfer | |
| identifier doi | 10.1115/1.4040256 | |
| journal fristpage | 82302 | |
| journal lastpage | 082302-6 | |
| tree | Journal of Heat Transfer:;2018:;volume( 140 ):;issue: 008 | |
| contenttype | Fulltext | |