A Lamb-wave-based technique for damage detection in composite laminates

Ng, C. T. and Veidt, M. (2009) A Lamb-wave-based technique for damage detection in composite laminates. Smart Materials and Structures, 18 7: 074006.1-074006.12. doi:10.1088/0964-1726/18/7/074006

Author Ng, C. T.
Veidt, M.
Title A Lamb-wave-based technique for damage detection in composite laminates
Journal name Smart Materials and Structures   Check publisher's open access policy
ISSN 0964-1726
Publication date 2009-07
Year available 2009
Sub-type Article (original research)
DOI 10.1088/0964-1726/18/7/074006
Volume 18
Issue 7
Start page 074006.1
End page 074006.12
Total pages 12
Place of publication United Kingdom
Publisher Institute of Physics Publishing Ltd.
Collection year 2010
Language eng
Abstract This paper presents the application of Lamb waves to inspect damage in composite laminates. The proposed methodology employs a network of transducers that are used to sequentially scan the structure before and after the presence of damage by transmitting and receiving Lamb wave pulses. A damage localization image is reconstructed by analyzing the cross-correlation of the scatter signal envelope with the excitation pulse envelope for each transducer pair. A potential damage area is then reconstructed by superimposing the image observed from each actuator and sensor signal path. Both numerical and experimental case studies are used to verify the proposed methodology for composite laminates. Three-dimensional finite element models with a transducer network consisting of four transducer elements are used in the numerical case studies. The experimental case studies employ a transducer network using four piezoelectric transducers as transmitter elements and a laser vibrometer to measure the response signals at four locations close to the transducers. The results show that the method enables the reliable detection of structural damage with locating inaccuracies of the order of a few millimeters inside as well as outside of an inspection area of 100 x 100 mm(2).
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article # 074006

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Mechanical & Mining Engineering Publications
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Citation counts: TR Web of Science Citation Count  Cited 46 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 78 times in Scopus Article | Citations
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Created: Fri, 19 Mar 2010, 10:51:42 EST by Rose Clements on behalf of School of Mechanical and Mining Engineering