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

G. Shepherd, A. Cochran, K.J. Kirk, A. McNab

Research output: Contribution to journalArticle

13 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)223-226
Number of pages3
JournalUltrasonics
Volume40
Issue number1
DOIs
Publication statusPublished - 2002

Fingerprint

cements
lithium niobates
ultrasonics
composite materials
temperature
aluminum oxides
cooling
room temperature
matrices
pulses
excitation

Keywords

  • composites
  • elevated temperatures
  • condition monitoring
  • ultrasonic monitoring

Cite this

Shepherd, G. ; Cochran, A. ; Kirk, K.J. ; McNab, A. / 1-3 connectivity composite material made from lithium niobate and cement for ultrasonic monitoring at elevated temperatures. In: Ultrasonics. 2002 ; Vol. 40, No. 1. pp. 223-226.
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1-3 connectivity composite material made from lithium niobate and cement for ultrasonic monitoring at elevated temperatures. / Shepherd, G.; Cochran, A.; Kirk, K.J.; McNab, A.

In: Ultrasonics, Vol. 40, No. 1, 2002, p. 223-226.

Research output: Contribution to journalArticle

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AU - Cochran, A.

AU - Kirk, K.J.

AU - McNab, A.

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AB - 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.

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