Multipole expansion of Green’s function for guided waves in a transversely isotropic plate

Lee, Heung Son; Kim, Yoon Young

doi:10.1007/s12206-015-0411-8

Cited by 5 publications

(2 citation statements)

References 21 publications

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“…The question is how to determine the inner and outer radii of the annular magnetostrictive patches. This section is devoted to a wave analysis based on Green's function [28] and the pinend-force model [23][24][25].…”

Section: Wave Analysis and Design Of Ash-mptsmentioning

confidence: 99%

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Analysis and design of an annular-array MPT for the efficient generation of omnidirectional shear-horizontal waves in plates

Park

Seung

Kim

2019

Smart Mater. Struct.

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Despite the fact that omnidirectional shear-horizontal (SH) waves have recently received much attention, there is no systematic design method with which to develop the corresponding transducers with enhanced output and power concentration levels at a target frequency. Here, we propose a method which can be used to design an optimal annular-array magnetostrictive patch transducer (MPT) that fulfills the above-mentioned objectives. The proposed transducer consists of optimally configured multiple magnetostrictive patches, consistently placed permanent magnets, and toroid coils. For the design, the transducer output signals are theoretically predicted using Green's function of guided waves in a plate and the analysis results are then used to develop new high-power annular-array MPTs generating omnidirectional SH waves in a plate. The validity of the analysis and the effectiveness of the design method were confirmed with numerical simulations and pitch-catch wave experiments performed on an aluminum plate. In the experiments, the mode selectivity and omnidirectivity of the designed transducer were also checked. While the proposed method is mainly developed for MPTs, it should be equally useful for the design of similar annular-type piezoelectric and electromagnetic acoustic guided wave transducers.

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Section: Wave Analysis and Design Of Ash-mptsmentioning

confidence: 99%

“…Using the pin-end-force model depicted in figure 6, we investigate the generated SH wave field using Green's function [28] in a plate with thickness b. Referring to figure 7, the point…”

Section: Analysis Of the Wave Field Generated By Ash-mptsmentioning

confidence: 99%