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Proceedings Paper

A practical system approach for fully autonomous multi-dimensional structural health monitoring
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Paper Abstract

We present an SHM system integrating both the impedance and the Lamb wave propagation method on a single board, while sharing the same DSP (Digital Signal Processing) processor and the piezoelectric patches. Three functional blocks, such as signal excitation/generation, signal sensing, and data processing, were implemented to incorporate the Lamb wave method into our existing impedance-based SHM system. Both pitch-and-catch and pulse-and-echo schemes were implemented for damage detection and location, respectively. Through synergetic integration of the two methods, our SHM system can detect various types of simulated damages on aluminum plates.

Paper Details

Date Published: 30 March 2009
PDF: 10 pages
Proc. SPIE 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009, 72921L (30 March 2009); doi: 10.1117/12.816289
Show Author Affiliations
Jeong Ki kim, Virginia Polytechnic Institute and State Univ. (United States)
Dao Zhou, Virginia Polytechnic Institute and State Univ. (United States)
Dong Sam Ha, Virginia Polytechnic Institute and State Univ. (United States)
Daniel Inman, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 7292:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009
Masayoshi Tomizuka, Editor(s)

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