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Warped Wigner-Hough Transform for Defect Reflection Enhancement in Ultrasonic Guided Wave Monitoring
Joint Authors
Baravelli, Emanuele
Cera, Giampaolo
De Marchi, Luca
Marzani, Alessandro
Speciale, N.
Source
Mathematical Problems in Engineering
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-11-19
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
To improve the defect detectability of Lamb wave inspection systems, the application of nonlinear signal processing was investigated.
The approach is based on a Warped Frequency Transform (WFT) to compensate the dispersive behavior of ultrasonic guided waves, followed by a Wigner-Ville time-frequency analysis and the Hough Transform to further improve localization accuracy.
As a result, an automatic detection procedure to locate defect-induced reflections was demonstrated and successfully tested by analyzing numerically simulated Lamb waves propagating in an aluminum plate.
The proposed method is suitable for defect detection and can be easily implemented for real-world structural health monitoring applications.
American Psychological Association (APA)
De Marchi, Luca& Baravelli, Emanuele& Cera, Giampaolo& Speciale, N.& Marzani, Alessandro. 2012. Warped Wigner-Hough Transform for Defect Reflection Enhancement in Ultrasonic Guided Wave Monitoring. Mathematical Problems in Engineering،Vol. 2012, no. 2012, pp.1-15.
https://search.emarefa.net/detail/BIM-1029552
Modern Language Association (MLA)
De Marchi, Luca…[et al.]. Warped Wigner-Hough Transform for Defect Reflection Enhancement in Ultrasonic Guided Wave Monitoring. Mathematical Problems in Engineering No. 2012 (2012), pp.1-15.
https://search.emarefa.net/detail/BIM-1029552
American Medical Association (AMA)
De Marchi, Luca& Baravelli, Emanuele& Cera, Giampaolo& Speciale, N.& Marzani, Alessandro. Warped Wigner-Hough Transform for Defect Reflection Enhancement in Ultrasonic Guided Wave Monitoring. Mathematical Problems in Engineering. 2012. Vol. 2012, no. 2012, pp.1-15.
https://search.emarefa.net/detail/BIM-1029552
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1029552