Shepherd, G. and Cochran, A. and Kirk, K.J. and McNab, A. (2002) 1-3 connectivity composite material made from lithium niobate and cement for ultrasonic monitoring at elevated temperatures. Ultrasonics, 40 (1). pp. 223-226. ISSN 0041-624XFull text not available in this repository. (Request a copy from the Strathclyde author)
We have designed, manufactured and tested a piezoelectric composite material to operate at temperatures above 400 oC. The material is a 1-3 connectivity composite with pillars of Z-cut lithium niobate in a matrix of alumina cement. The composite material produced shorter pulses than a monolithic plate of lithium niobate and remained intact upon cooling. Results are presented from room temperature and high temperature testing. This material could be bonded permanently to a test object, making it possible to carry out condition monitoring over an extended period. A new excitation method was also developed to enable remote switching between array elements.
|Keywords:||composites, elevated temperatures, condition monitoring, ultrasonic monitoring, Electrical engineering. Electronics Nuclear engineering, Acoustics and Ultrasonics|
|Subjects:||Technology > Electrical engineering. Electronics Nuclear engineering|
Faculty of Engineering > Electronic and Electrical Engineering
|Depositing user:||Strathprints Administrator|
|Date Deposited:||15 Jun 2007|
|Last modified:||22 Mar 2017 09:08|