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

Shepherd, G., Cochran, A. , Kirk, K.J. and McNab, A. (2002) 1–3 connectivity composite material made from lithium niobate and cement for ultrasonic condition monitoring at elevated temperatures. Ultrasonics, 40(1-8), pp. 223-226. (doi: 10.1016/S0041-624X(02)00141-5) (PMID:12159936)

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Abstract

We have designed, manufactured and tested a piezoelectric composite material to operate at temperatures above 400 °C. 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:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cochran, Professor Sandy
Authors: Shepherd, G., Cochran, A., Kirk, K.J., and McNab, A.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Ultrasonics
Publisher:Elsevier
ISSN:0041-624X
Published Online:06 February 2002

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