
Proceedings Paper
Robust decision making in damage detection using piezoelectric transducers and Lamb wave propagationFormat | Member Price | Non-Member Price |
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Paper Abstract
In this paper, we present a robust quantitative decision-making methodology for structural damage detection using
piezoelectric transducers and the Lamb wave approach with the consideration of environmental and operational
variances. The features of wave propagation are extracted from multiple signals using an improved adaptive harmonic
wavelet transform (AHWT), which are then denoised and highlighted by applying the principal component analysis
(PCA) in the wavelet domain. After self-checking and updating the baseline dataset, the Hotelling's T2 analysis
provides a statistical indication of damage under a certain given confidence level. The detectability, sensitivity and
robustness of the methodology are investigated using experimental as well as numerical studies. As the basis for the
detection practice, the propagation of Lamb waves in an aluminum beam is systematically studied in this paper.
Paper Details
Date Published: 18 April 2007
PDF: 16 pages
Proc. SPIE 6529, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007, 652906 (18 April 2007); doi: 10.1117/12.715926
Published in SPIE Proceedings Vol. 6529:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007
Masayoshi Tomizuka; Chung-Bang Yun; Victor Giurgiutiu, Editor(s)
PDF: 16 pages
Proc. SPIE 6529, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007, 652906 (18 April 2007); doi: 10.1117/12.715926
Show Author Affiliations
Jiong Tang, The Univ. of Connecticut (United States)
Published in SPIE Proceedings Vol. 6529:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007
Masayoshi Tomizuka; Chung-Bang Yun; Victor Giurgiutiu, Editor(s)
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