Title page for etd-0724115-145310


[Back to Results | New Search]

URN etd-0724115-145310
Author Shin-Shian Lin
Author's Email Address No Public.
Statistics This thesis had been viewed 5390 times. Download 479 times.
Department Mechanical and Electro-Mechanical Engineering
Year 2014
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Investigation and development of the numerical simulation for powder melting phenomenon during the laser additive layer manufacturing process
Date of Defense 2015-07-29
Page Count 52
Keyword
  • surface tension
  • selective laser
  • solidification and melting model
  • Abstract The purpose of this research is to analyze the temperature distribution and the heat transfer behavior of the metal powder during the solidification and melting process. In this paper, numerical simulations for solidification droplet and powder melting by selective laser are studied. From the former simulation, the current computation frameworks are compared with the corresponding experimental measurements and other numerical results. Our simulations agree well with results of these literatures. The surface tension plays an important role for the droplet during solidification. The latter simulation follows the experimental setups of the three-dimensional printing facility of Industrial Technology Research Institute. The metal powder is heated by the selective laser to experience melting and solidification process. The discrepancies between numerical and experimental results are discussed, especially for the extreme high temperature rise of the numerical result that is not observed in the experiment observations. The current study can be utilized to improve the numerical simulation of the three-dimensional printing in the future.
    Advisory Committee
  • Kuang-Chuan Lin - chair
  • Yang-Yao Niu - co-chair
  • Hsin-Fu Huang - co-chair
  • Chien-Chou Tseng - advisor
  • Files
  • etd-0724115-145310.pdf
  • Indicate in-campus at 3 year and off-campus access at 3 year.
    Date of Submission 2015-08-25

    [Back to Results | New Search]


    Browse | Search All Available ETDs

    If you have more questions or technical problems, please contact eThesys