Multiple reflections of Lamb waves at a delamination

Hayashi, Takahiro; Kawashima, Koichiro

Ultrasonics, 2002, 40(1-8), 193-197

Number of Access:251（2025-11-13 08:33 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/84499

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Title
Multiple reflections of Lamb waves at a delamination
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
NRID
1000050023239 1000050023239
CreatorName
Kawashima, Koichiro
Subject
Multiple reflections
Lamb wave
Delamination
Numerical analysis
Abstract
Wave propagation in laminated plates with delaminations was calculated using the semi-analytical finite element method. The visualization results and deeper numerical analyses revealed the following phenomena on the fundamental Lamb modes at delamination regions of laminated plates. First, Lamb wave propagates toward the delamination, and then splits into two independent waves at the "Entrance" of the delamination with no significant reflections. These two waves reach the "Exit" of the delamination with the different phases and arrival time. Thus reflected and transmitted waves are excited at the Exit. The repetition of such reflections at the Exit causes the multiple reflections at regular intervals corresponding to the delamination size.
Publisher
Elsevier Ltd
Source Title
Ultrasonics
Volume (Issue)
40(1-8)
Page
193-197
Date of Issued
2002-05
Language
English
Handle URL
https://hdl.handle.net/11094/84499
PISSN
0041624X
NCID
AA00876332
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1016/s0041-624x(02)00136-1
Access Rights
open access
CopyRight
© 2002 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