A signal processing approach for elastic wave-based structural health monitoring using active piezoelectrics
Data(s) |
15/03/2007
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Resumo |
A series of digital frequency filters (DFFs) were designed to screen diverse noises and the spectrographic analysis was conducted to isolate complex boundary reflection, which obscures the damage-induced signals. The scale-averaged wavelet power (SAP) technique was applied to enhance<br />the measurement accuracy of Time of Flight (TOF). As an example, the propagation characteristics of elastic wave in a structural beam of square cross-section were analyzed using such an approach and verified experimentally and numerically, with the consideration of the complicated wave scatter caused by the non-ignorable section dimensions.<br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
Trans Tech Publications |
Relação |
http://www.scientific.net/0-87849-427-8/1141/ |
Direitos |
2007, Trans Tech Publications |
Palavras-Chave | #damage identification #structural health monitoring #wave propagation #signal processing #wavelet transform #time of flight |
Tipo |
Journal Article |