Phase change materials (PCM) based cold source for selective freezing 3D printing of porous materials

Phase change materials (PCM) based cold source for selective freezing 3D printing of porous... Selective freezing three-dimensional (3D) printing is a promising manufacturing process, which can fabricate multi-scale and multi-functional porous structures with excellent geometrical and functional integrity. In this process, the fabrication temperature affects both the macroscopic and microscopic structures of the resulting part; therefore, the cold substrate plays an important role in controlling the process reliability and part quality. To improve its thermal stability and efficiency both temporally and spatially, we propose a novel cold source design based on phase change materials (PCM). Aqueous sodium chloride and ammonium chloride with different concentrations and volumes are experimentally studied to verify the effectiveness of the PCM serving as the cold source for the printing process. A holistic thermal enhancement strategy is applied to improve the duration and thermal stability. The feasibility and effectiveness is well validated by the hardware-in-loop experimental study. The results demonstrate that the proposed cold source design can lead to more reliable and stable printing process and consequently promote its wider industrial applications in various areas. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The International Journal of Advanced Manufacturing Technology Springer Journals

Phase change materials (PCM) based cold source for selective freezing 3D printing of porous materials

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Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer-Verlag London Ltd., part of Springer Nature
Subject
Engineering; Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design
ISSN
0268-3768
eISSN
1433-3015
D.O.I.
10.1007/s00170-017-1295-9
Publisher site
See Article on Publisher Site

Abstract

Selective freezing three-dimensional (3D) printing is a promising manufacturing process, which can fabricate multi-scale and multi-functional porous structures with excellent geometrical and functional integrity. In this process, the fabrication temperature affects both the macroscopic and microscopic structures of the resulting part; therefore, the cold substrate plays an important role in controlling the process reliability and part quality. To improve its thermal stability and efficiency both temporally and spatially, we propose a novel cold source design based on phase change materials (PCM). Aqueous sodium chloride and ammonium chloride with different concentrations and volumes are experimentally studied to verify the effectiveness of the PCM serving as the cold source for the printing process. A holistic thermal enhancement strategy is applied to improve the duration and thermal stability. The feasibility and effectiveness is well validated by the hardware-in-loop experimental study. The results demonstrate that the proposed cold source design can lead to more reliable and stable printing process and consequently promote its wider industrial applications in various areas.

Journal

The International Journal of Advanced Manufacturing TechnologySpringer Journals

Published: Nov 20, 2017

References

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