Masters Theses

Abstract

"Freeze-form Extrusion Fabrication (FEF) is a novel, environmentally friendly solid freeform fabrication method developed for the fabrication of ceramic-based components. The method is based on extrusion deposition of ceramic pastes using water as the binding media. The ceramic solids loading can be 50 vol. % or higher and initial studies have focused on the use of aluminum oxide (Al₂O₃). This thesis describes the development of the FEF machine and an open control system with on-line process sensing and control capabilities for building ceramic parts with this process. The FEF system components and their interaction are examined, and the main process parameters affecting part geometry defined. The open control system allows for the software control algorithms to be updated with future improvements. Controllers have also been implemented to regulate motor velocity and dispensing flowrate for improved part quality. The developed machine has been demonstrated to successfully build parts"--Abstract, page iii.

Advisor(s)

Landers, Robert G.
Leu, M. C. (Ming-Chuan)

Committee Member(s)

Liou, Frank W.

Department(s)

Mechanical and Aerospace Engineering

Degree Name

M.S. in Mechanical Engineering

Sponsor(s)

U.S. Air Force Research Laboratory (Wright-Patterson Air Force Base, Ohio)

Publisher

University of Missouri--Rolla

Publication Date

Spring 2006

Pagination

x, 51 pages

Note about bibliography

Includes bibliographical references (pages 49-50)

Rights

© 2006 Michael Scott Mason, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Subject Headings

Aluminum oxide -- TestingCeramic materialsCeramicsExtrusion process

Thesis Number

T 8940

Print OCLC #

81253167

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