Date of Award

2002

Level of Access

Open-Access Thesis

Degree Name

Master of Science (MS)

Department

Mechanical Engineering

Advisor

Vincent Caccese

Second Committee Member

Lawrence Thompson

Abstract

Methods for in-situ monitoring of high temperature composite materials are important in a number of technological applications. In this work a method is developed that makes use of solid cylindrical waveguides to monitor the change of elastic properties and the oxidation reaction of carbon-carbon composites with change in temperature. The apparatus is designed to allow ultrasonic measurements to be performed in a controlled atmosphere at temperatures up to llOO°C. Signal processing required to obtain quantitative information is considered for the experimental apparatus described.

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