30 March 2009 A practical system approach for fully autonomous multi-dimensional structural health monitoring
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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.
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Jeong Ki kim, Jeong Ki kim, Dao Zhou, Dao Zhou, Dong Sam Ha, Dong Sam Ha, Daniel Inman, Daniel Inman, } "A practical system approach for fully autonomous multi-dimensional structural health monitoring", Proc. SPIE 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009, 72921L (30 March 2009); doi: 10.1117/12.816289; https://doi.org/10.1117/12.816289
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