Identification of delamination in composite beams using spectral estimation and a genetic algorithm

Nag, A and Mahapatra, Roy D and Gopalakrishnan, S (2002) Identification of delamination in composite beams using spectral estimation and a genetic algorithm. In: Smart Materials and Structures, 11 (6). pp. 899-908.

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Abstract

An efficient strategy for identification of delamination in composite beams and connected structures is presented. A spectral finite-element model consisting of a damaged spectral element is used for model-based prediction of the damaged structural response in the frequency domain. A genetic algorithm (GA) specially tailored for damage identification is derived and is integrated with finite-element code for automation. For best application of the GA, sensitivities of various objective functions with respect to delamination parameters are studied and important conclusions are presented. Model-based simulations of increasing complexity illustrate some of the attractive features of the strategy in terms of accuracy as well as computational cost. This shows the possibility of using such strategies for the development of smart structural health monitoring softwares and systems.

Item Type:	Journal Article
Publication:	Smart Materials and Structures
Publisher:	Institute of Physics
Additional Information:	Copyright of this article belongs to Institute of Physics.
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	19 Jul 2011 05:54
Last Modified:	19 Jul 2011 05:54
URI:	http://eprints.iisc.ac.in/id/eprint/39238

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