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21 April 2008 Passive damage detection in composite laminates with integrated sensing networks
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The initiation and propagation of damage in composite laminates generate Acoustic Emission. The use of real time AE monitoring has been quite extensive for in-service composite structures. In the present work, experimental and numerical studies were performed to characterize the acoustic wave propagation in thin glass/epoxy composite plates. Experimentally obtained and simulated emission signals were used to identify and locate the source of the acoustic wave. Signal processing algorithms and a passive damage diagnosis system based on AE techniques were proposed for continuously monitoring and assessing the structural health of composite laminates. The local sensing and distributed processing features of the sensor system result in a decreased demand for bandwidth and lower computational power needed at each node.
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Yi Huang, Fabrizia Ghezzo, Patrick Rye, and Sia Nemat-Nasser "Passive damage detection in composite laminates with integrated sensing networks", Proc. SPIE 6935, Health Monitoring of Structural and Biological Systems 2008, 69351R (21 April 2008);

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