Open AccessChallenges in path planning of high energy density beams for additive manufacturing
Author(s) -
K. P. Karunakaran,
Seema Negi,
Arun Nambolan,
Ashik Patel,
Yogesh Patil,
Milan Pandya,
Sajan Kapil,
Dmitriy Trushnikov,
Michael P. Sealy,
Alain Bernard
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/759/1/012012
Subject(s) - acceleration , beam (structure) , energy (signal processing) , gaussian , computer science , exploit , optics , physics , classical mechanics , quantum mechanics , computer security
As there are no cutting forces in High Energy Density (HED) beams like lasers and Electron Beam (EB), their speeds are limited only by their positioning systems. On the other hand, as the entire matrix of the 3D printed part has to be addressed by the thin beam in multiple passes in multiple layers, they have to travel several kilometers in tiny motions. Therefore, the acceleration of the motion system becomes the limiting factor than velocity or precision. The authors have proposed an area-filling strategy for EB to fill the layer with optimal squares to exploit analog and hardware computing. 3D printing requires uniform intensity slanged as flat hat shape whereas the default is Gaussian. The authors have proposed an optimal algorithm that takes into account the maximum velocity and acceleration for achieving a flat hat without any compromise on productivity.