Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/18905
Title: A quantitative identification approach for delamination in laminated composite beams using digital damage fingerprints (DDFs)
Authors: Pan, N
Su, Z 
Ye, L
Zhou, LM 
Lu, Y
Keywords: Artificial neural network
Composite beam
Damage identification
Delamination
FEM
Issue Date: 2006
Publisher: Elsevier Sci Ltd
Source: Composite structures, 2006, v. 75, no. 1-4, p. 559-570 How to cite?
Journal: Composite Structures 
Abstract: Digital damage fingerprints (DDFs) are a set of optimised and digitised characteristics of structural signatures, which are able to exactly and uniquely define a certain kind of structural healthy status. The DDF-based damage recognition technique includes the extraction of DDFs, assembly of damage parameters database (DPD) and subsequently inverse recognition in virtue of artificial intelligence. In this study, DDFs extracted from Lamb wave signals were employed to quantitatively assess delamination in carbon fibre-reinforced laminated beams. Characteristics of Lamb wave signals in the laminated beams were first evaluated, and DPD hosting DDFs for selected damage scenarios was constructed through numerical simulations, which was used to predict delamination in the composite beams with the aid of an artificial neural algorithm. The diagnostic results have demonstrated the excellent performance of DDF technique for quantitative damage identification.
URI: http://hdl.handle.net/10397/18905
ISSN: 0263-8223
DOI: 10.1016/j.compstruct.2006.04.078
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