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1-3 connectivity composite material made from lithium niobate and cement for ultrasonic monitoring at elevated temperatures

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 0041-624X

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Abstract

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.

Item type: Article
ID code: 3531
Keywords: composites, elevated temperatures, condition monitoring, ultrasonic monitoring, Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Unknown Department
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 15 Jun 2007
    Last modified: 16 Jul 2013 17:58
    URI: http://strathprints.strath.ac.uk/id/eprint/3531

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