3D Printing Variable Stiffness Foams Using Viscous Thread Instability
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3D printing.pdf
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615.21 KB
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Adobe PDF
Checksum (MD5)
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Author(s)
Lipson, Hod
Lipton, Jeffrey I
Date Issued
August 2016
Journal
Scientific Reports
Publisher
Nature Publishing Group
Citation
Lipton, Jeffrey I., and Hod Lipson. “3D Printing Variable Stiffness Foams Using Viscous Thread Instability.” Scientific Reports 6.1 (2016): n. pag. © 2017 Macmillan Publishers Limited
Version
Final published version
Abstract
Additive manufacturing of cellular structures has numerous applications ranging from fabrication of biological scaffolds and medical implants, to mechanical weight reduction and control over mechanical properties. Various additive manufacturing processes have been used to produce open regular cellular structures limited only by the resolution of the printer. These efforts have focused on printing explicitly designed cells or explicitly planning offsets between strands. Here we describe a technique for producing cellular structures implicitly by inducing viscous thread instability when extruding material. This process allows us to produce complex cellular structures at a scale that is finer than the native resolution of the printer. We demonstrate tunable effective elastic modulus and density that span two orders of magnitude. Fine grained cellular structures allow for fabrication of foams for use in a wide range of fields ranging from bioengineering, to robotics to food printing.
MIT Department
Massachusetts Institute of Technology. Computer Science and Artificial Intelligence Laboratory
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1038/srep29996
