Integrated high-temperature piezoelectric plate acoustic wave transducers using mode conversion

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DOIResolve DOI: http://doi.org/10.1109/TUFFC.2009.1163
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TypeArticle
Journal titleIEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Volume56
Issue6
Pages12181224; # of pages: 7
Subjectcondition monitoring; flaw detection; high-temperature techniques; piezoelectric materials; plates (structures); sol-gel processing; structural acoustics; structural engineering; thick film devices; ultrasonic materials testing; ultrasonic transducers
AbstractPiezoelectric thick (>66µm) films have been directly coated onto aluminum (Al) substrates using a sol-gel spray technique. With a top electrode these films serve as integrated ultrasonic transducers (IUTs) which normally operate as thickness vibration longitudinal wave transducers. When such IUTs are located at the edges of the metallic plates, they can excite and detect symmetrical, anti-symmetric and shear horizontal types of PAWs using mode conversion methods. In 2mm thick Al plates two line defects of 1mm width and 1mm depth were clearly detected at temperatures up to 150°C in pulse-echo mode. Results indicated that for 2mm thick aluminum plates shear horizontal PAWs were the best for the line defect detection. Also the experimental results agree well with those obtained by a finite difference based method.
Publication date
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
LanguageEnglish
AffiliationNRC Industrial Materials Institute (IMI-IMI); National Research Council Canada
Access conditionavailable
unlimited
public
Peer reviewedYes
NRC number50611
NPARC number11213134
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Record identifier5951a7d9-434f-4ef7-97c5-a77e7b1cc2f3
Record created2009-10-02
Record modified2016-05-09
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