eprintid: 405 rev_number: 7 eprint_status: archive userid: 5 dir: disk0/00/00/04/05 datestamp: 2005-07-15 lastmod: 2013-07-04 13:00:19 status_changed: 2013-07-04 13:00:19 type: techreport metadata_visibility: show item_issues_count: 0 creators_name: Benedetti, Manuel creators_name: Donelli, Massimo creators_name: Franceschini, Gabriele creators_name: Pastorino, Matteo creators_name: Massa, Andrea title: Effective Exploitation of the a-priori Information through a Microwave Imaging Procedure Based on the Smw for Nde/Ndt Applications ispublished: unpub subjects: TU full_text_status: public abstract: This paper presents an innovative microwave technique, which is suitable for the detection of defects in non-destructive-evaluation (NDT/NDE) applications where a lot of a-priori information is available. The proposed approach is based on the equations of the inverse scattering problem, which are solved by means of a minimization procedure based on a Genetic Algorithm (GA). To reduce the number of problem unknowns, the available a-priori information is efficiently exploited by introducing an updating procedure for the electric field computation based on the Sherman-Morrison-Woodbury (SWM) formula. The results of a representative set of numerical experiments as well as comparisons with state-of-the-art methods are reported. They confirm the effectiveness, the feasibility and the robustness of the proposed approach, which some interesting features by a computational point-of-view, as well. date: 2005-05 date_type: published institution: University of Trento department: informaticat refereed: TRUE referencetext: 1. R. Zoughi, Microwave Non-Destructive Testing and Evaluation, 2000 :Kluwer 2. S. Caorsi, A. Massa, and M. Pastorino, "A crack identification microwave procedure based on a genetic algorithm for nondestructive testing", IEEE Trans. Antennas Propagat., vol. 49, no. 12, pp.1812 -1820 2001 3. S. Caorsi, A. Massa, M. Pastorino, and F. Righini, "Crack detection in lossy two-dimensional structures by means of a microwave imaging approach", Int. J. Appl. Electromagn. Mech., vol. 11, pp.233 -244 2000 4. M. Pastorino, A. Massa, and S. Caorsi, "A global optimization technique for microwave nondestructive evaluation", IEEE Trans. Instrum. Meas., vol. 51, no. 4, pp.666 -673 2002 5. S. Caorsi, A. Massa, M. Pastorino, and M. Donelli, "Improved microwave imaging procedure for nondestructive evaluations of two-dimensional structures", IEEE Trans. Antennas Propagat., vol. 52, no. 6, pp.1386 -1397 2004 6. J. H. Richmond, "Scattering by a dielectric cylinder of arbitrary cross section shape", IEEE Trans. Antennas Propagat., vol. AP-13, pp.334 -341 1965 7. S. Jones, The Theory of Electromagnetism, 1964 :Pergamon 8. W. C. Chew, G. L. Wang, A. A. Aydiner, and T. J. Cui, "Recent advances in nonlinear inverse scattering", Proc. 2004 Int. Symp. Electrom. Theory (URSI 2004), pp.697 -699 2004 9. D. E. Goldberg, Genetic Algorithms in Search, Optimization, and Machine Learning, 1989 : Addison-Wesley 10. J. M. Johnson and Y. Rahmat-Samii, "Genetic algorithms in engineering electromagnatics", IEEE Trans. Antennas Propagat. Mag., vol. 39, no. 4, pp.7 -21 1997 11. E. Yip and B. Tomas, "Obtaining scattering solution for perturbed geometries and materials from moment method solutions", ACES J., pp.95 -118 1988 citation: Benedetti, Manuel and Donelli, Massimo and Franceschini, Gabriele and Pastorino, Matteo and Massa, Andrea (2005) Effective Exploitation of the a-priori Information through a Microwave Imaging Procedure Based on the Smw for Nde/Ndt Applications. [Technical Report] (Unpublished) document_url: http://www.eledia.org/students-reports/405/1/DIT-05-006.pdf