Modal Analysis of Guided Waves in a Bar with Arbitrary Cross-Section

Hayashi, Takahiro; Suyama, Mitsunobu; Abe, Tsukasa

Journal of Solid Mechanics and Materials Engineering, 2008, 2(5), 636-644

Number of Access:392（2025-08-14 04:28 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/84515

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Title
Modal Analysis of Guided Waves in a Bar with Arbitrary Cross-Section
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
Suyama, Mitsunobu
CreatorName
Abe, Tsukasa
Subject
Ultrasonic Nondestructive Inspection
Guided Waves
Dispersion Curves
Rail
Curved Surface Scanning
Description
Takahiro HAYASHI, Mitsunobu SUYAMA, Tsukasa ABE, Modal Analysis of Guided Waves in a Bar with Arbitrary Cross-Section, Journal of Solid Mechanics and Materials Engineering, 2008, 2(5), pp. 636-644, https://doi.org/10.1299/jmmp.2.636.
Abstract
Guided waves, i.e., ultrasonic wave packets propagating in the longitudinal direction, are a promising technique for rapid long-range nondestructive inspection of bar-like structures such as pipes and rails. Guided wave inspection requires determining guided wave velocities (dispersion curves) and wave structures. A computational technique is available to obtain the dispersion curves and wave structures for structures with complex cross-sections. This study develops a more accurate technique using the mirror relation of guided wave modes and an iteration method for solving the eigenproblem. Experimental studies of a JIS 6-kg rail verify that dispersion curves and wave structures can be obtained with sufficient accuracy for typical out-of-plain vibration modes. Wave structures were obtained by measuring waveforms at several points on the curved surface of the rail with a laser interferometer controlled by robot arms.
Publisher
The Japan Society of Mechanical Engineers
Source Title
Journal of Solid Mechanics and Materials Engineering
Volume (Issue)
2(5)
Page
636-644
Date of Issued
2008-05
Language
English
Handle URL
https://hdl.handle.net/11094/84515
eISSN
18809871
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1299/jmmp.2.636
Access Rights
open access
CopyRight
© 2008 by The Japan Society of Mechanical Engineers.
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article