Anisotropic material behaviors of 3D printed carbon-fiber polymer composites with open-source printers

Jordan Garcia, Robert Harper, Y. Charles Lu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Composite products are often created using traditional manufacturing methods such as compression or injection molding. Recently, additive manufacturing (3D printing) techniques have been used for fabricating composites. 3D printing is the process of producing three-dimensional parts through the successive combination of various layers of material. This layering effect in combination with exposure to ambient (or reduced) temperature and pressure cause the finished products to have inconsistent microstructures. The inconsistent microstructures along with the oriented reinforcing fibers create anisotropic parts with difficulty to predict mechanical properties. In this paper, the mechanical properties of fiber reinforced polymer composites produced by additive manufacturing technique (3D printing) and by traditional manufacturing technique (compression molding) were investigated. Three open-source 3D printers, i.e. FlashForge Dreamer, Tevo Tornado, and Prusa i3 Mk3, were used to fabricate bending samples from carbon-fiber reinforced ABS (acrylonitrile butadiene styrene). Results showed that there exist significant discrepancies and anisotropies in mechanical properties of 3D printed composites. First, the properties vary greatly among parts made from different printers. Secondly, the mechanical responses of 3D printed parts strongly depend upon the orientations of the filaments. Parts with the infill oriented along the length of the specimens showed the most favorable mechanical responses such as Young’s modulus, maximum strength, and toughness. Thirdly, all 3D printed parts exhibit inferior properties to those made by conventional manufacturing. Finally, theoretical modeling has been attempted to predict the mechanical responses of 3D printed products and can potentially be used to “design” the 3D printing processes to achieve the optimal performance.

Original languageEnglish
Title of host publicationAdditive Manufacturing; Advanced Materials Manufacturing; Biomanufacturing; Life Cycle Engineering; Manufacturing Equipment and Automation
ISBN (Electronic)9780791885062
DOIs
StatePublished - 2021
EventASME 2021 16th International Manufacturing Science and Engineering Conference, MSEC 2021 - Virtual, Online
Duration: Jun 21 2021Jun 25 2021

Publication series

NameProceedings of the ASME 2021 16th International Manufacturing Science and Engineering Conference, MSEC 2021
Volume1

Conference

ConferenceASME 2021 16th International Manufacturing Science and Engineering Conference, MSEC 2021
CityVirtual, Online
Period6/21/216/25/21

Bibliographical note

Publisher Copyright:
Copyright © 2021 by ASME

Keywords

  • 3D Printing
  • Composite Theory
  • Fiber Composites
  • Mechanical Behavior
  • Orientation

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

Fingerprint

Dive into the research topics of 'Anisotropic material behaviors of 3D printed carbon-fiber polymer composites with open-source printers'. Together they form a unique fingerprint.

Cite this