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Proceedings Paper

Imaging of defects in composite structures using guided ultrasonics
Author(s): Prasad S. Mahadev; Kumar R. Vinu; Krishnan Balasubramaniam; C. V. KrishnaMoorthy
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Paper Abstract

The ability of Lamb waves to travel long distances can be harnessed to monitor damage in large structures, such as those used in aerospace applications. This paper reports on studies of the propagation of Lamb waves in composite structures the signal processing techniques used to get information from Lamb wave data. The Short Time Fourier Transform (STFT) is used as a tool for signal processing on Lamb waves. The energy of the Lamb wave signal is employed to reconstruct the image using iterative tomographic algorithms.

Paper Details

Date Published: 14 October 2003
PDF: 4 pages
Proc. SPIE 5062, Smart Materials, Structures, and Systems, (14 October 2003); doi: 10.1117/12.514686
Show Author Affiliations
Prasad S. Mahadev, Indian Institute of Technology, Madras (India)
Kumar R. Vinu, Indian Institute of Technology, Madras (India)
Krishnan Balasubramaniam, Indian Institute of Technology, Madras (India)
C. V. KrishnaMoorthy, Indian Institute of Technology, Madras (India)

Published in SPIE Proceedings Vol. 5062:
Smart Materials, Structures, and Systems
S. Mohan; B. Dattaguru; S. Gopalakrishnan, Editor(s)

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