Mechanical Engineering Commons^™

Evaluation Of Dynamic Properties Of A Carbon-Carbon Composite At Elevated Temperatures., Sean Patrick Bunker

Electronic Theses and Dissertations

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.