Additive Manufacturing (AM) encompasses a broad variety of fabrication techniques characterized by successive additions of mass and/or energy to a build domain. AM processes have been developed for a wide variety of feedstock materials, including metals, polymers, and ceramics. In the present work we study the AM of ceramics using the Direct Ink Writing (DIW) technique. We performed comparative studies between additively manufactured and conventionally manufactured test articles, in order to quantify the variations in output geometry and mechanical properties induced by the DIW process. Uniaxial tests are conducted using high-performance optical strain measurement techniques. In particular, it is shown that the DIW-produced specimens exhibit anisotropic shrinkage when fired, as well as a marked decrease in stiffness and ultimate strength. We conclude with a discussion of potential mechanisms which may be responsible for these property degradations, and introduce potential adaptations to the DIW AM process that may be effective in combating them.
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ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 26–29, 2018
Quebec City, Quebec, Canada
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-5172-2
PROCEEDINGS PAPER
Comparative Study of As-Built Geometric and Mechanical Properties of Additively Manufactured Ceramics
John C. Steuben,
John C. Steuben
Naval Research Laboratory, Washington, DC
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Athanasios P. Iliopoulos,
Athanasios P. Iliopoulos
Naval Research Laboratory, Washington, DC
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John G. Michopoulos
John G. Michopoulos
Naval Research Laboratory, Washington, DC
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John C. Steuben
Naval Research Laboratory, Washington, DC
Athanasios P. Iliopoulos
Naval Research Laboratory, Washington, DC
John G. Michopoulos
Naval Research Laboratory, Washington, DC
Paper No:
DETC2018-86017, V01AT02A048; 9 pages
Published Online:
November 2, 2018
Citation
Steuben, JC, Iliopoulos, AP, & Michopoulos, JG. "Comparative Study of As-Built Geometric and Mechanical Properties of Additively Manufactured Ceramics." Proceedings of the ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 1A: 38th Computers and Information in Engineering Conference. Quebec City, Quebec, Canada. August 26–29, 2018. V01AT02A048. ASME. https://doi.org/10.1115/DETC2018-86017
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