Guided wave dispersion curves for a bar with an arbitrary cross-section, a rod and rail example

Hayashi, Takahiro; Song, Won Joon; Rose, Joseph L.

Ultrasonics, 2003, 41(3), 175-183

Number of Access:367（2025-08-14 01:38 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/84500

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Title
Guided wave dispersion curves for a bar with an arbitrary cross-section, a rod and rail example
Creator
NRID
1000030324479 1000030324479
ORCID
0000-0001-6064-4658 0000-0001-6064-4658
researchmap permalink
takahiro_hayashi takahiro_hayashi
Scopus Author ID
37064150200 37064150200
CreatorName
Hayashi, Takahiro
CreatorName
Song, Won Joon
CreatorName
Rose, Joseph L.
Subject
Guided wave
Dispersion curve
Semi-analytical finite element method
Two-dimensional Fourier transform
Rail inspection
Abstract
Theoretical and experimental issues of acquiring dispersion curves for bars of arbitrary cross-section are discussed. Since a guided wave can propagate over long distances in a structure, guided waves have great potential for being applied to the rapid non-destructive evaluation of large structures such as rails in the railroad industry. Such fundamental data as phase velocity, group velocity, and wave structure for each guided wave mode is presented for structures with complicated cross-sectional geometries as rail. Phase velocity and group velocity dispersion curves are obtained for bars with an arbitrary cross-section using a semi-analytical finite element method. Since a large number of propagating modes with close phase velocities exist, dispersion curves consisting of only dominant modes are obtained by calculating the displacement at a received point for each mode. These theoretical dispersion curves agree in characteristic parts with the experimental dispersion curves obtained by a two-dimensional Fourier transform technique.
Publisher
Elsevier Ltd
Source Title
Ultrasonics
Volume (Issue)
41(3)
Page
175-183
Date of Issued
2003-05
Language
English
Handle URL
https://hdl.handle.net/11094/84500
PISSN
0041624X
NCID
AA00876332
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1016/S0041-624X(03)00097-0
Access Rights
open access
CopyRight
© 2003 Elsevier Science B.V. This manuscript version is made available under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article