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Proceedings Paper

Guided waves for SHM of a large truss structure
Author(s): Xuan Peter Zhu; Piervincenzo Rizzo; Jerry Bruck
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Paper Abstract

This paper describes a method based on Ultrasonic Guided Waves (UGWs) for the detection of cracks in sign support structures. The method combines the advantages of UGWs with the extraction of defect-sensitive features aimed at performing a multivariate diagnosis of damage. The general frame work presented in this paper is applied to ultrasonic data collected from a dimantled overhead sign support structure tested at the University of Pittsburgh. The probing hardware consists of a National Instruments-PXI platform that controls the generation and detection of the ultrasonic signals by means of the piezoelectric transducers made of Lead Zirconate Titanate. The effectiveness of the proposed approach to diagnose the presence of defects as small as a few percent of the waveguide cross-sectional are is demonstrated.

Paper Details

Date Published: 8 April 2010
PDF: 8 pages
Proc. SPIE 7650, Health Monitoring of Structural and Biological Systems 2010, 76500O (8 April 2010); doi: 10.1117/12.847335
Show Author Affiliations
Xuan Peter Zhu, Univ. of Pittsburgh (United States)
Piervincenzo Rizzo, Univ. of Pittsburgh (United States)
Jerry Bruck, Pennsylvania State Dept. of Transportation (United States)

Published in SPIE Proceedings Vol. 7650:
Health Monitoring of Structural and Biological Systems 2010
Tribikram Kundu, Editor(s)

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