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Title: Active Mixing of Disparate Inks for Multimaterial 3D Printing

Abstract

3D printing of multimaterial parts relies upon efficient mixing of the ink components and a rapid response to composition changes. However, at low Reynolds numbers and large Peclet numbers, mixing disparate viscosity and density inks poses a challenge. In this study, the performance of active micromixers for disparate non-Newtonian inks is evaluated using both experiments and computational fluid dynamics simulations. The mixing efficiencies are compared with scaling relationships for active micromixers. Using detailed simulation results, multiple factors are identified that can impact the micromixer response time during a composition change. Finally, an active micromixer is proposed and evaluated to efficiently mix arbitrary multimaterial ink compositions and produce fine composition gradients within printed parts.

Authors:
ORCiD logo [1];  [1];  [1];  [1]; ORCiD logo [1];  [1];  [1];  [1];  [2];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Oklahoma State Univ., Tulsa, OK (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1608530
Alternate Identifier(s):
OSTI ID: 1506736
Report Number(s):
LLNL-JRNL-761112
Journal ID: ISSN 2365-709X; 950167
Grant/Contract Number:  
AC52-07NA27344; AC52‐07NA27344; LLNL‐JRNL‐761112.
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Materials Technologies
Additional Journal Information:
Journal Volume: 4; Journal Issue: 7; Journal ID: ISSN 2365-709X
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 3D printing; computational fluid dynamics; direct-ink-write; micromixing; multimaterial

Citation Formats

Ortega, Jason M., Golobic, Melody, Sain, John D., Lenhardt, Jeremy M., Wu, Amanda S., Fisher, Scott E., Perez Perez, Lemuel X., Jaycox, Adam W., Smay, James E., Duoss, Eric B., and Wilson, Thomas S. Active Mixing of Disparate Inks for Multimaterial 3D Printing. United States: N. p., 2019. Web. doi:10.1002/admt.201800717.
Ortega, Jason M., Golobic, Melody, Sain, John D., Lenhardt, Jeremy M., Wu, Amanda S., Fisher, Scott E., Perez Perez, Lemuel X., Jaycox, Adam W., Smay, James E., Duoss, Eric B., & Wilson, Thomas S. Active Mixing of Disparate Inks for Multimaterial 3D Printing. United States. https://doi.org/10.1002/admt.201800717
Ortega, Jason M., Golobic, Melody, Sain, John D., Lenhardt, Jeremy M., Wu, Amanda S., Fisher, Scott E., Perez Perez, Lemuel X., Jaycox, Adam W., Smay, James E., Duoss, Eric B., and Wilson, Thomas S. Fri . "Active Mixing of Disparate Inks for Multimaterial 3D Printing". United States. https://doi.org/10.1002/admt.201800717. https://www.osti.gov/servlets/purl/1608530.
@article{osti_1608530,
title = {Active Mixing of Disparate Inks for Multimaterial 3D Printing},
author = {Ortega, Jason M. and Golobic, Melody and Sain, John D. and Lenhardt, Jeremy M. and Wu, Amanda S. and Fisher, Scott E. and Perez Perez, Lemuel X. and Jaycox, Adam W. and Smay, James E. and Duoss, Eric B. and Wilson, Thomas S.},
abstractNote = {3D printing of multimaterial parts relies upon efficient mixing of the ink components and a rapid response to composition changes. However, at low Reynolds numbers and large Peclet numbers, mixing disparate viscosity and density inks poses a challenge. In this study, the performance of active micromixers for disparate non-Newtonian inks is evaluated using both experiments and computational fluid dynamics simulations. The mixing efficiencies are compared with scaling relationships for active micromixers. Using detailed simulation results, multiple factors are identified that can impact the micromixer response time during a composition change. Finally, an active micromixer is proposed and evaluated to efficiently mix arbitrary multimaterial ink compositions and produce fine composition gradients within printed parts.},
doi = {10.1002/admt.201800717},
journal = {Advanced Materials Technologies},
number = 7,
volume = 4,
place = {United States},
year = {Fri Apr 12 00:00:00 EDT 2019},
month = {Fri Apr 12 00:00:00 EDT 2019}
}

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Cited by: 30 works
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Works referencing / citing this record:

3D Printing of Compositional Gradients Using the Microfluidic Circuit Analogy
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