Abstract
The ability to design and fabricate lightweight structure is one of the most important aspects for building a drone system. Often, connecting wires are used on the drone system for powering and signal transmission at the expense of the drone’s weight. In this paper, we explore the design and fabrication of a safety cage for drone using design optimization and 3D printing. A comparison between fused deposition modelling (FDM) and selective laser sintering (SLS) 3D printing techniques for the fabrication of thin structures was made, and it was found that SLS is more superior in this aspect. A hybrid 3D printing process combining SLS and aerosol jet printing is proposed for the fabrication of lightweight multifunctional structure with printed circuit for a drone safety cage. The safety cage is designed in such a way that maximizes the production efficiency of SLS printing process. In addition, aerosol jet printing is used to fabricate conformal circuit onto the 3D-printed safety cage structure to replace the conventional connecting wires for weight saving purpose. Lastly, an electrical characterization is conducted to investigate the functionality of the printed conductive traces on the safety cage. Nevertheless, this work demonstrates the streamlining of various 3D printing approaches for the fabrication of multifunctional structures with conformal circuits.
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Funding
This research is supported by NAMIC Singapore and funded by the National Research Foundation Singapore under its Innovation Cluster Programme. This work is also supported by the Singapore Centre for 3D Printing, Nanyang Technological University, Singapore, through the use of its additive manufacturing facilities.
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G.L. Goh and V. Dikshit conceived the presented idea and planned the experiment. R. Koneru and Z.K. Peh helped design the CAD model and manufacture the prototype. W. Lu conducted the simulation. W.Y. Yeong supervised the project. G.D. Goh conducted the impact test.
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Goh, G.L., Dikshit, V., Koneru, R. et al. Fabrication of design-optimized multifunctional safety cage with conformal circuits for drone using hybrid 3D printing technology. Int J Adv Manuf Technol 120, 2573–2586 (2022). https://doi.org/10.1007/s00170-022-08831-y
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DOI: https://doi.org/10.1007/s00170-022-08831-y