Date of Award

8-1-2009

Document Type

Masters Thesis

Degree Name

M.S.

Organizational Unit

College of Natual Science and Mathematics

First Advisor

Maciej Kumosa, Ph.D.

Second Advisor

Dwight Smith, Ph.D.

Third Advisor

Yun Bo Yi

Keywords

Acoustic emission, Electric transmission, FEA, Four point bend test, Hybrid compopsite material

Abstract

Recently the inefficiency and lack of capabilities of electric energy transmission have been put in the global spotlight; a transmission line design known as the Aluminum Conducting Composite Core Trapezoidal Wire (ACCC/TWTM) attempts to eliminate the deficiencies. The ACCC core is comprised of a new hybrid composite material. The most probable causes of short-term damage to the ACCC core were investigated through a series of finite element models. It was found that excessive bending was the most likely cause of short-term damage to the core. During bending of the ACCC core, stresses are concentrated at the interface in the carbon fiber composite region. The composite materials' compressive strength was measured, and found to be significantly lower than similar composite materials based upon the same reinforcing fiber. An excessive bending finite element model was experimentally validated through a series of four point bend experiments in which acoustic emissions were monitored. From this work, it has been determined the extent to which the ACCC core can be bent without creating significant damage.

Publication Statement

Copyright is held by the author. User is responsible for all copyright compliance.

Rights Holder

Brian Burks

Provenance

Received from ProQuest

File Format

application/pdf

Language

en

File Size

96 p.

Discipline

Materials Science, Mechanical engineering, Energy

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