Abstract
Pipeline structural health monitoring (SHM) is being paid more and more attention to in energy and chemical industries. In this work, we presented two SHM strategies for pipelines based on axial shear horizontal (SH) waves (or torsional waves) and circumferential SH waves piezoelectric transducers. Firstly, we show that the single-mode torsional wave T(0,1) can be excited by a transducer ring consisting of 24 pieces of d24 face-shear mode PZT wafers. Then, three types of shear-mode piezoelectric wafers, including d24, conventional d15 and thickness-poled d15 mode, were systematically compared in terms of SH wave excitation and reception. Results show that the d24 mode wafer outperforms the other two, especially for SH wave reception. Finally, a bidirectional SH wave transducer is proposed based on antiparallel d15 piezoelectric strips, which can excite single-mode bi-directional SH waves and it is frequency tunable. It can also be used to excite circumferential SH wave in large-diameter pipes.
How to Cite:
Li, F. ., Huan, Q. ., Chen , M. . & Miao , H. ., (2019) “Axial and circumferential SH wave piezoelectric transducers for pipeline structural health monitoring ”, Review of Progress in Quantitative Nondestructive Evaluation .
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