Challenges in path planning of high energy density beams for additive manufacturing

Authors

Karunakaran K. P, Indian Institute of Technology BombayFollow
Seema Negi, Indian Institute of Technology Bombay
Arun Nambolan, Indian Institute of Technology Bombay
Yogesh Patil, Indian Institute of Technology Bombay
Milan Pandya, Indian Institute of Technology Bombay
Sajan Kapil, Indian Institute of Technology Guwahati
Dmitriy Trushnikov, Perm National Research Polytechnic University, Russia
Michael P. Sealy, University of Nebraska-LincolnFollow
Alain Bernard, Ecole Centrale de Nantes

Document Type

Article

Date of this Version

2020

Citation

EBW2019 IOP Conf. Series: Materials Science and Engineering 759 (2020) 012012

doi:10.1088/1757-899X/759/1/012012

Comments

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence

Abstract

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.