eprintid: 401
rev_number: 6
eprint_status: archive
userid: 5
dir: disk0/00/00/04/01
datestamp: 2011-03-28
lastmod: 2013-07-04 11:29:47
status_changed: 2013-07-04 11:29:47
type: techreport
metadata_visibility: show
item_issues_count: 0
creators_name: Benedetti, Manuel
creators_name: Donelli, Massimo
creators_name: Massa, Andrea
title: Multicrack Detection in Two-Dimensional Structures by Means of Ga-Based Strategies
ispublished: pub
subjects: TU
full_text_status: public
keywords: Non-Destructive Testing and Evaluation; Microwave Imaging; Multicrack Detection
abstract: We propose a methodological approach for the detection of multiple defects inside dielectric or conductive media. Two innovative algorithms are developed starting from the inverse scattering equations solved by means of different optimization strategies. In the first implementation, a hierarchical strategy based on parallel-subprocesses is considered, whereas the second algorithm employs a single-process architecture. Whatever the implementation, the arising cost function is minimized through a suitable hybrid-coded genetic algorithm, whose individuals encode the problem unknowns. In order to achieve a computational saving, the formulation based on the inhomogeneous Green's function is adopted and each crack-region is parametrized by means of a selected set of descriptive parameters. The approach as well as its different implementations are assessed through a selected set of numerical experiments and in comparison with previously developed single-crack inverse scattering methods. (c) 2007 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
date: 2007-01
date_type: published
institution: University of Trento
department: informaticat
refereed: TRUE
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citation:   Benedetti, Manuel and Donelli, Massimo and Massa, Andrea  (2007) Multicrack Detection in Two-Dimensional Structures by Means of Ga-Based Strategies.  [Technical Report]     
document_url: http://www.eledia.org/students-reports/401/1/DISI-11-073.pdf