Scattering characteristics of Lamb waves from debondings at structural features in composite laminates

Ng, Ching-Tai and Veidt, Martin (2012) Scattering characteristics of Lamb waves from debondings at structural features in composite laminates. Journal of the Acoustical Society of America, 132 1: 115-123. doi:10.1121/1.4728192

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Author Ng, Ching-Tai
Veidt, Martin
Title Scattering characteristics of Lamb waves from debondings at structural features in composite laminates
Journal name Journal of the Acoustical Society of America   Check publisher's open access policy
ISSN 0001-4966
1520-9024
Publication date 2012-07
Year available 2012
Sub-type Article (original research)
DOI 10.1121/1.4728192
Open Access Status File (Publisher version)
Volume 132
Issue 1
Start page 115
End page 123
Total pages 9
Place of publication Melville, NY, United States
Publisher A I P Publishing LLC
Collection year 2013
Language eng
Formatted abstract
This article investigates the scattering characteristics of Lamb waves from a debonding at a structural feature in a composite laminate. This study specifically focuses on the use of the low frequency fundamental antisymmetric (A 0) Lamb wave as the incident wave for debonding detection. Three-dimensional finite element (FE) simulations and experimental measurements are used to investigate the scattering phenomena. Good agreement is obtained between the FE simulations and experimental results. Detailed parameter studies are carried out to further investigate the relationship between the scattering amplitudes and debonding sizes. The results show that the amplitude of the scattered A 0 Lamb wave is sensitive to the debonding size, which indicates the potential of using the low frequency A 0 Lamb wave as the interrogating wave for debonding detection and monitoring. The findings of the study provide improved physical insights into the scattering phenomena, which are important to further advance damage detection techniques and optimize transducer networks.
Keyword Ultrasonic guided-waves
Shear adhesive joints
Mindlin plate-theory
Bonded lap joints
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2013 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 11 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 18 times in Scopus Article | Citations
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Created: Sun, 14 Oct 2012, 00:02:09 EST by System User on behalf of School of Mechanical and Mining Engineering