Conformal Geometry and Multimaterial Additive Manufacturing through Freeform Transformation of Building Layers

Jigang Huang, Henry Oliver T. Ware, Rihan Hai, Guangbin Shao, Cheng Sun*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

3D printing, formally known as additive manufacturing, creates complex geometries via layer-by-layer addition of materials. While 3D printing has been historically perceived as the static addition of build layers, 3D printing is now considered as a dynamic assembly process. In this context, here a new 3D printing process is reported that executes full degree-of-freedom (DOF) transformation (translating, rotating, and scaling) of each individual building layer while utilizing continuous fabrication techniques. Transforming individual building layers within the sequential layered manufacturing process enables dynamic transformation of the 3D printed parts on-the-fly, eliminating the time-consuming redesign steps. Preserving the locality of the transformation to each layer further enables the discrete conformal transformation, allowing objects such as vascular scaffolds to be optimally fabricated to properly fit within specific patient anatomy obtained from the magnetic resonance imaging (MRI) measurements. Finally, exploiting the freedom to control the orientation of each individual building layer, multimaterials, multiaxis 3D printing capability are further established for integrating functional modules made of dissimilar materials in 3D printed devices. This final capability is demonstrated through 3D printing a soft pneumatic gripper via heterogenous integration of rigid base and soft actuating limbs.

Original languageEnglish (US)
JournalAdvanced Materials
DOIs
StateAccepted/In press - 2021

Keywords

  • 3D printing
  • conformal mapping
  • multiaxis
  • multimaterials
  • six degrees of freedom

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Conformal Geometry and Multimaterial Additive Manufacturing through Freeform Transformation of Building Layers'. Together they form a unique fingerprint.

Cite this