DocumentCode :
3101284
Title :
Compressive sensing with frequency warped compensation for damage detection in composite plate
Author :
Perelli, A. ; Harput, Sevan ; De Marchi, Luca ; Freear, Steven
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Leeds, Leeds, UK
fYear :
2013
fDate :
21-25 July 2013
Firstpage :
158
Lastpage :
161
Abstract :
This work focuses on an ultrasonic guided wave structural health monitoring (SHM) system development for composite plate inspection. The development of an in situ health monitoring system that can inspect large areas and communicate remotely to the inspector is highly computational demanding due to both the huge number of piezoelectric sensors needed and the high sampling frequency. To address this problem, a general approach for low rate sampling is developed. Compressive Sensing (CS) has emerged as a potentially viable technique for the efficient acquisition that exploits the sparse representation of dispersive ultrasonic guided waves in the frequency warped basis. The framework is applied to lower the sampling frequency and to enhance defect localization performances of Lamb wave inspection systems. As a result, an automatic detection procedure to locate defect-induced reflections was demonstrated and successfully tested on simulated Lamb waves propagating in a carbon fiber plate using PZFlex software. The proposed method is suitable for defect detection and can be easily implemented for real application to structural health monitoring.
Keywords :
carbon fibres; compressed sensing; condition monitoring; inspection; plates (structures); structural engineering computing; surface acoustic waves; ultrasonic waves; Lamb wave inspection systems; PZFlex software; SHM system; carbon fiber plate; composite plate inspection; compressive sensing; damage detection; frequency warped compensation; piezoelectric sensors; sparse representation; structural health monitoring; ultrasonic guided wave; Compressed sensing; Dispersion; Monitoring; Sensors; Time-frequency analysis; Transforms; Vectors; Composite materials; Compressive sensing; Defect detection; Lamb waves; Warped frequency transform;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultrasonics Symposium (IUS), 2013 IEEE International
Conference_Location :
Prague
ISSN :
1948-5719
Print_ISBN :
978-1-4673-5684-8
Type :
conf
DOI :
10.1109/ULTSYM.2013.0041
Filename :
6725272
Link To Document :
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