Doctoral Dissertations

Junjie Luo

Keywords and Phrases

3D Printing; Additive Manufacturing; Filament Fed; Glass; Transparent

Abstract

"There are many scientific and engineering applications of glass including optics, communications, electronics, and hermetic seals, there has been minimal research towards the Additive Manufacturing (AM) of transparent glass parts. The special thermal and optical properties of glasses make them hard to be printed using conventional AM techniques. In this dissertation, two different AM techniques for glass AM were developed, Selective Laser Melting (SLM) and filament fed process.

Semi-transparent parts were printed with SLM process. However, the filament fed process was found to be more robust and promising for printing optically transparent glass parts. Therefore, this dissertation is focused on filament fed process for different types of glass, including soda lime glass, fused quartz and borosilicate glass.

For soda lime glass, the optical quality of the best printed part was found to be as good as furnace cast glass part using the same type of filaments. Optical defects and refractive index inhomogeneity can be linked to the molten region temperature. Furthermore, the mechanism of bubble formation in soda lime glass printing was also studied. Different regimes of bubble formation were found corresponding with different process parameters.

Though the melting temperature of fused quartz is very high (~2300 ⁰C), 3D fully transparent cubes with high index homogeneity were printed. For borosilicate glass, 3D fully transparent parts were printed, and the optical quality of best printed sample is as good as conventionally manufactured borosilicate glass"--Abstract, page iv.

Advisor(s)

Kinzel, Edward C.

Committee Member(s)

Landers, Robert G.
Bristow, Douglas A.
Pan, Heng
Brow, Richard K.

Department(s)

Mechanical and Aerospace Engineering

Degree Name

Ph. D. in Mechanical Engineering

Sponsor(s)

United States. Department of Education
National Science Foundation (U.S.)
Missouri University of Science and Technology. Materials Research Center
Missouri University of Science and Technology. Intelligent Systems Center
Air Force Research Laboratory
Lockheed-Martin

Comments

Partial funding for this project was provided by the National Science Foundation (CMMI-1538464) and the Department of Education (P200A120062).

Research Center/Lab(s)

Intelligent Systems Center

Publisher

Missouri University of Science and Technology

Publication Date

Spring 2017

Journal article titles appearing in thesis/dissertation

  • Additive manufacturing of glass
  • Additive manufacturing of transparent soda-lime glass using a filament-fed process
  • Additive manufacturing of glass for optical applications
  • Bubble formation in additive manufacturing of glass
  • Additive manufacturing of transparent borosilicate glass using a filament-fed process

Pagination

xiii, 129 pages

Note about bibliography

Includes bibliographic references.

Rights

© 2017 Junjie Luo, All rights reserved.

Document Type

Dissertation - Open Access

File Type

text

Language

English

Thesis Number

T 11102

Electronic OCLC #

992174381

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