Flexible metallic ultrasonic transducers for structural health monitoring of pipes at high temperatures

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DOIResolve DOI: http://doi.org/10.1109/TUFFC.2010.1659
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TypeArticle
Journal titleAcoustics, Speech, and Signal Processing Newsletter, IEEE
Volume57
Issue9
Pages21032110; # of pages: 8
AbstractPiezoelectric films have been deposited by a solgel spray technique onto 75-μm-thick titanium and stainless steel (SS) membranes and have been fabricated into flexible ultrasonic transducers (FUTs). FUTs using titanium membranes were glued and those using SS membranes brazed onto steel pipes, procedures that serve as on-site installation techniques for the purpose of offering continuous thickness monitoring capabilities at up to 490°C. At 150°C, the thickness measurement accuracy of a pipe with an outer diameter of 26.6 mm and a wall thickness of 2.5 mm was estimated to be 26 μ m and the center frequency of the FUT was 10.8 MHz. It is demonstrated that the frequency bandwidth of the FUTs and SNR of signals using glue or brazing materials as high-temperature couplant for FUTs are sufficient to inspect the steel pipes even with a 2.5 mm wall thickness.
Publication date
LanguageEnglish
AffiliationNRC Industrial Materials Institute; National Research Council Canada
Peer reviewedYes
NRC number53872
NPARC number17101712
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Record identifierc34ec2b7-6677-4c2b-a2a3-045811bd9282
Record created2011-03-14
Record modified2016-05-09
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