Journal
NDT & E INTERNATIONAL
Volume 44, Issue 3, Pages 281-289Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ndteint.2011.01.002
Keywords
Lamb waves; Delamination; B-scan; D-scan; FEA; Laminated composites
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The quantitative assessment of both, the length and width, of a delamination in quasi-isotropic composite laminates, using experimentally generated B- and D-scan imaging techniques employing ultrasonic Lamb waves was presented. Distinct zones were identified in B- and D-scans and the sizes of zones were expressed in terms of the width and length of delamination, the probe separation distance, and the probe diameter. B-scans generated through numerical simulations gave an insight and significance of each zone. B- and D-scans were used to estimate the width and length of delaminations, respectively. The estimated width and length of delaminations were found to be in concurrence with the actual values. (C) 2011 Elsevier Ltd. All rights reserved.
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