High temperature flexible ultrasonic transducers for structural health monitoring and NDT

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TypeArticle
Proceedings titleProceedings of 12th CANSMART International Workshop on Smart Materials and Structures
ConferenceCANSMART 2009 International Workshop on Smart Materials and Structures, October 22-23, 2009, Montréal, Québec, Canada
Pages217226; # of pages: 10
SubjectFlexible ultrasonic transducer; high temperature; thick piezoelectric film; non-destructive testing; structural health monitoring; brazing
AbstractFlexible ultrasonic transducers (FUTs) consisting of a 75 μm thick metal membrane, a piezoelectric composite with a thickness larger than 85 μm and a top electrode were developed for structural health monitoring (SHM) and non-destructive testing (NDT) applications. The piezoelectric films were made by a sol-gel spray technique. Its ultrasonic performance in terms of signal strength is at least as good as commercially available broadband ultrasonic transducers at room temperature. Onsite gluing and brazing installation techniques which bond the FUTs onto steel pipes for SHM and NDT purposes up to 100°C and 150°C are developed, respectively. The best thickness measurement accuracy of FUT at 150°C was estimated to be 26 μm.
Publication date
LanguageEnglish
AffiliationNRC Industrial Materials Institute; National Research Council Canada
Peer reviewedNo
NRC number52383
NPARC number18398982
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Record identifier880b0010-35fd-49a0-a18f-29532d75e4a4
Record created2011-08-16
Record modified2016-05-09
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