Masters Theses

Keywords and Phrases

Hollow; Spheres; Weibull; Reliability; Strength

Abstract

"Ceramic hollow spheres have long been an area of interest in the laboratory, but until recently were not available at the commercial level. Ceramic hollow spheres have many applications as both a component in composite materials and as a material itself. Because of the renewed interest in these materials, the relative reliability must be known and understood before the design of composite materials containing hollow spheres can be developed.

Due to the lack of an adequate strength formula for the diametral compression of ceramic hollow spheres, Weibull analysis was applied to the individual hollow sphere failure loads. It was found that failure initiated at the inner surface directly beneath the applied loads. Sorting the failure load data by diameter gave an accurate indication of the relative reliability of the hollow spheres. Long tails down to low failure loads indicated that the hollow spheres had relatively unreliable failure behavior. This was attributed to various defects in the sphere microstructure. Weibull modulus for these thick walled ceramic spheres was low, between 3 and 7"--Abstract, page iii.

Advisor(s)

Moore, Robert E., 1930-2003

Committee Member(s)

Ownby, P. D.
Oglesby, David B.

Department(s)

Materials Science and Engineering

Degree Name

M.S. in Ceramic Engineering

Publisher

University of Missouri--Rolla

Publication Date

Fall 1991

Pagination

x, 54 pages

Note about bibliography

Includes bibliographical references (pages 51-53).

Rights

© 1991 Brian Keith Osborne, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Thesis Number

T 6296

Print OCLC #

25364830

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