Share Email Print
cover

Proceedings Paper

Guided waves filtering with warped curvelets
Author(s): Luca De Marchi; Emanuele Baravelli; Massimo Ruzzene; Nicolò Speciale
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Lamb wave testing for SHM is complicated by multimodal propagation and by reflections. In this paper, the effectiveness of the decomposition inWarped Curvelet Frames for the analysis of guided ultrasonic waves is studied. The transformation acts by expanding the analyzed signal into a tight frame of basis functions named Curvelets. The curvelet transform may be effectively combined with warping procedures to analyze wave propagation in dispersive media. Experimental results show that, thanks to the spatial and temporal localization of curvelets, it is possible to decompose waves that are overlapped both in the time/space and in the frequency/wavenumber domain.

Paper Details

Date Published: 1 April 2011
PDF: 10 pages
Proc. SPIE 7984, Health Monitoring of Structural and Biological Systems 2011, 79841Z (1 April 2011); doi: 10.1117/12.880456
Show Author Affiliations
Luca De Marchi, Univ. degli Studi di Bologna (Italy)
Emanuele Baravelli, Univ. degli Studi di Bologna (Italy)
Georgia Institute of Technology (United States)
Massimo Ruzzene, Georgia Institute of Technology (United States)
Nicolò Speciale, Univ. degli Studi di Bologna (Italy)


Published in SPIE Proceedings Vol. 7984:
Health Monitoring of Structural and Biological Systems 2011
Tribikram Kundu, Editor(s)

© SPIE. Terms of Use
Back to Top