Masters Theses

Abstract

"Continuous fiber-reinforced silicon carbide (SiCf/SiC) ceramic composites have been increasingly used due to their high temperature strength and graceful failure mechanisms. A disadvantage is the high cost and lengthy production processes that are required to develop these materials. Polymer infiltration and pyrolysis (PIP) is one of the most attractive fabrication processes for composites due to shape flexibility, mass production and relatively low cost; however, the quality of material obtained by this method has been considered insufficient due to the microstructure defects of the material obtained. This study investigated a hybrid of multiple polymer manufacturing processes to maximize quality of the SiCf/SiC composites while minimizing manufacturing time. The composites were laid up using a prepreg process then pressed and injected with a preceramic polymer at high pressures. The composite was then cured and pyrolyzed. This study investigated the effect of injection pressures and examines the effects on the composite physical properties and microstructure. The microstructure was evaluated by void density measurements and scanning electron microscopy. The results showed that the pressurized resin injection produces better parts than vacuum assisted reinjection"--Abstract, page iii.

Advisor(s)

Chandrashekhara, K.

Committee Member(s)

Kinzel, Edward C.
Samaranayake, V. A.

Department(s)

Mechanical and Aerospace Engineering

Degree Name

M.S. in Aerospace Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Summer 2015

Pagination

viii, 24 pages

Note about bibliography

Includes bibliographic references (pages 22-23).

Rights

© 2015 Robert Raymond Meinders, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 11351

Electronic OCLC #

1041856516

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