Flexible ultrasonic transducers for structural health monitoring

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TypeArticle
Journal titleCINDE journal
Volume31
Issue3
Pages713; # of pages: 7
SubjectFlexible ultrasonic transducer; Structural health monitoring; High temperature ultrasonic measurement; Nondestructive testing
AbstractFlexible ultrasonic transducers (FUTs) which have on-site installation capability are presented for non-destructive evaluation (NDE) and structural health monitoring (SHM) purposes. These FUTs typically consist of a 70 μm thick piezoelectric lead-zirconate-titanate (PZT) composite (PZT-c) coated by a sol-gel spray technique on a 75 μm thick titanium (Ti) membrane. Such an FUT was glued onto a steel pipe of 101 mm in diameter and 4.5 mm in wall thickness and heated at up to 200°C with the glue serving as a high temperature ultrasonic couplant. The pipe thickness measurement accuracy at 200°C is estimated to be 13 μm. FUTs were also glued onto the end edge of a 2 mm thick aluminum (Al) plate to generate and receive predominantly shear-horizontal (SH) plate acoustic waves (PAWs) to detect simulated line defects at temperatures of up to 100°C. FUTs, glued onto a graphite/epoxy (Gr/Ep) composite plate, were also used for the detection of an artificial disbond. An induction type non-contact method for the evaluation of Al plates and Gr/Ep composites using FUTs is also demonstrated.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute
Peer reviewedYes
NRC number52465
NPARC number15948806
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Record identifierbb7f83c9-8141-4200-a7e2-efc1b0de6117
Record created2011-01-10
Record modified2016-05-09
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