Experimental measurement and numerical simulation of fundamental anti-symmetric lamb wave scattering in composites

Veidt, M. and Ng, C.T. (2011). Experimental measurement and numerical simulation of fundamental anti-symmetric lamb wave scattering in composites. In: Review of Progress in Quantitative Nondestructive Evaluation. 37th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE, San Diego, CA, (207-214). 18-23 July 2010. doi:10.1063/1.3591858


Author Veidt, M.
Ng, C.T.
Title of paper Experimental measurement and numerical simulation of fundamental anti-symmetric lamb wave scattering in composites
Conference name 37th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE
Conference location San Diego, CA
Conference dates 18-23 July 2010
Proceedings title Review of Progress in Quantitative Nondestructive Evaluation   Check publisher's open access policy
Journal name AIP Conference Proceedings   Check publisher's open access policy
Series AIP Conference Proceedings
Place of Publication College Park, MD United States
Publisher American Institute of Physics
Publication Year 2011
Year available 2011
Sub-type Fully published paper
DOI 10.1063/1.3591858
ISBN 9780735408883
ISSN 0094-243X
Volume 1335
Start page 207
End page 214
Total pages 8
Abstract/Summary One critical factor affecting the performance of Lamb wave based damage detection and characterization techniques is the angular amplitude distribution of the interrogating wave scattered at defects and structural features. Analytical solutions for this problem do not exist for composite laminates due to the anisotropic nature and multilayer characteristics of the material. In this paper the scattering characteristics of the fundamental anti-symmetric Lamb wave at delaminations and structural features in composite laminates is considered. Experimental measurements and finite element simulations are employed to quantify the A 0 mode Lamb wave scattering characteristics at delaminations and through holes. Good agreement is found between the simulations and experimental measurements. Extended parameter studies provide improved physical insight into the phenomena and show that the angular distributions of the scattered wave amplitudes depend on the defect size to wavelength ratio, the stacking sequence of the laminate and, in the case of delamination damage, the through thickness location of the delamination.
Subjects 3100 Physics and Astronomy
Keyword Composites
Guided Waves
Scattering
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Conference Paper
Collection: School of Mechanical & Mining Engineering Publications
 
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