Characterisation of laminar damage in a composite panel by diffraction tomography based imaging method using Lamb waves

Chan, Eugene, Rose, L. R. Francis, Veidt, Martin and Wang, Chun H. (2014). Characterisation of laminar damage in a composite panel by diffraction tomography based imaging method using Lamb waves. In: 8th Australasian Congress on Applied Mechanics as part of Engineers Australia Convention 2014. Proceedings. ACAM 8: 8th Australasian Congress on Applied Mechanics, Melbourne, VIC, Australia, (364-371). 23-26 November, 2014.

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Name Description MIMEType Size Downloads
Author Chan, Eugene
Rose, L. R. Francis
Veidt, Martin
Wang, Chun H.
Title of paper Characterisation of laminar damage in a composite panel by diffraction tomography based imaging method using Lamb waves
Conference name ACAM 8: 8th Australasian Congress on Applied Mechanics
Conference location Melbourne, VIC, Australia
Conference dates 23-26 November, 2014
Convener Sabu John
Proceedings title 8th Australasian Congress on Applied Mechanics as part of Engineers Australia Convention 2014. Proceedings
Place of Publication Barton, ACT, Australia
Publisher Engineers Australia
Publication Year 2014
Sub-type Fully published paper
Open Access Status
ISBN 9781922107350
Volume Part B
Start page 364
End page 371
Total pages 8
Collection year 2015
Language eng
Formatted Abstract/Summary
Damage size and severity are critical inputs needed to forecast the strength and durability of safety-critical structures. The purpose of this paper is to extend a new imaging method, to delamination damage in laminated composite plates. Based on a recently developed near-field diffraction tomography technique that employs the multi-static scattering matrix from sensor measurements, this new technique can be applied to complex structures for which the Green’s function of the structure is available numerically, which represents a significant advance over existing methods that rely on the availability of analytical solutions of Green’s function. By employing the finite element method to compute the scattered wave field by delamination damage, it is shown the size and geometry of the laminar damage are accurately estimated. This constitutes a major improvement relative to previous attempts to image delaminations in composites.
Keyword Diffraction tomography
Guided (Lamb) waves
Imaging
Inverse problems
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Fri, 10 Apr 2015, 16:40:09 EST by Jon Swabey on behalf of School of Mechanical and Mining Engineering