eprintid: 489 rev_number: 4 eprint_status: archive userid: 5 dir: disk0/00/00/04/89 datestamp: 2011-07-26 lastmod: 2013-07-01 11:18:01 status_changed: 2013-07-01 11:18:01 type: techreport metadata_visibility: show item_issues_count: 0 creators_name: Benedetti, Manuel creators_name: Pastorino, Matteo creators_name: Rosani, Andrea creators_name: Massa, Andrea title: Detection, Location and Reconstruction of Multicracks by Means of a GA-Based Electromagnetic Technique ispublished: pub subjects: TU full_text_status: public keywords: Non-destructive Testing and Evaluation, Microwave Imaging, Genetic Algorithm, Multicrack Detection abstract: In this work, an approach for the reconstruction of both geometrical and dielectric properties of multiple defects inside a known host medium is analyzed. In particular, the GA-based integrated strategy is applied starting from the knowledge of the scattered field in an external measurement domain in order to determine positions, sizes and dielectric permittivities of the defects, as well as the related field distribution. In order to evaluate the effectiveness in both locating the defects and reconstructing the corresponding permittivity profiles, a selected set of numerical results is presented. date: 2011-01 date_type: published institution: University of Trento department: informaticat refereed: FALSE referencetext: 1. R. Zoughi, Microwave Nondestructive Testing and Evaluation, Kluwer Academic Publishers, The Netherlands, 2000. 2. S. J. Lockwood and H. Lee, “Pulse-echo microwave imaging for NDE of civil structures: Image reconstruction, enhancement, and object recognition,” Int. J. Imaging System Technol., vol. 8, pp. 407-412, 1997. 3. W. C. Chew and Y. M. Wang, “Reconstruction of two-dimensional permittivity distribution using the distorted Born iterative method,” IEEE Trans. on Medical Imaging, vol. 9, pp. 218-225, 1990. 4. C. C. Chiu and P. T. Liu, “Image reconstruction of perfectly conducting cylinder by the genetic algorithm,” IEE Proc. Microw. Antennas Propag., vol. 3, p. 143, 1996. 5. 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, pp. 1812-1820, 2001. 6. 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, pp. 1386-1397, 2004. M. Benedetti, M. Donelli, and A. Massa, “Multicrack Detection in Two-Dimensional 7. Structures by means of GA-based strategies”, IEEE Trans. Antennas Propagat., vol. 55, pp. 205-215, 2007. citation: Benedetti, Manuel and Pastorino, Matteo and Rosani, Andrea and Massa, Andrea (2011) Detection, Location and Reconstruction of Multicracks by Means of a GA-Based Electromagnetic Technique. [Technical Report] document_url: http://www.eledia.org/students-reports/489/1/DISI-11-231.C134.pdf