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Bimaterial 3D printing using galvanometer scanners

  • Daniel Bandeira
  • Marta PascoalEmail author
  • Beatriz Santos
Research Article
  • 33 Downloads

Abstract

In this work a 3D printing system based on the use of stereolithography and able to print parts made of two materials is studied. The 3D printing problem is divided into two subproblems. First, the problem of locating UV light emitters capable of reaching all areas of the polymer that constitutes the part to be printed is analyzed with the goal of minimizing the number of used emitters. Next, for each layer of the part the selected emitters are assigned to the areas of the polymer to be reached, with the goals of maximizing the angle of incidence of the UV light on the printing plane and minimizing the number of emitters that need to be activated. Integer linear formulations were introduced in an earlier work for both problems. Here these models are revisited and heuristic and exact methods are developed. Finally, the formulations and methods are analyzed for a case study. The results of the computational experiments are presented and discussed.

Keywords

Set covering problem Biobjective optimization 3D printing Multi-material hybrid objects; laser projection 

Notes

Acknowledgements

This work was developed within the Project PT2020-POCI-SII & DT 17963: NEXT.Parts, Next-Generation of Advanced Hybrid Parts, from the program Portugal 2020, through the COMPETE 2020 – Programa Operacional Competitividade e Internacionalização. The work was also partially supported by the Portuguese Foundation for Science and Technology (FCT) under project Grants UID/MAT/00324/2019 and UID/MULTI/00308/2019.

References

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Daniel Bandeira
    • 1
  • Marta Pascoal
    • 1
    • 2
    • 3
    Email author
  • Beatriz Santos
    • 1
  1. 1.Department of MathematicsUniversity of Coimbra, EC Santa CruzCoimbraPortugal
  2. 2.Centre for Mathematics of the University of CoimbraCoimbraPortugal
  3. 3.Institute for Systems Engineering and Computers – CoimbraUniversity of CoimbraCoimbraPortugal

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