Abstract
The radiation transfer equation is numerically solved in a layer of homogeneous absorbing scattering medium, which is equivalent to the powder bed, irradiated with a normally incident laser beam of an axially symmetric profile to estimate the spatial distribution of the deposited thermal energy. The scattering and lateral transport of laser radiation is shown to decrease the intensity of the heat source at the axis and to produce its weak tail around the laser spot. This decreases the maximum temperature in the powder bed. Narrowing the laser beam to increase the precision of selective laser melting becomes ineffective when the beam radius approaches the extinction length in the powder because it does not adequately narrow the zone of energy deposition.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
