A signal processing approach for elastic wave-based structural health monitoring using active piezoelectrics

Yang, Chunhui, Su, Z., Ye, L., Zhou, L. and Hodgson, Peter 2007, A signal processing approach for elastic wave-based structural health monitoring using active piezoelectrics, Key engineering materials, vol. 334-335, pp. 1141-1144.

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Title A signal processing approach for elastic wave-based structural health monitoring using active piezoelectrics
Author(s) Yang, Chunhui
Su, Z.
Ye, L.
Zhou, L.
Hodgson, Peter
Journal name Key engineering materials
Volume number 334-335
Start page 1141
End page 1144
Publisher Trans Tech Publications
Place of publication Aedermannsdorf, Switzerland
Publication date 2007-03-15
ISSN 1013-9826
Keyword(s) damage identification
structural health monitoring
wave propagation
signal processing
wavelet transform
time of flight
Summary 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
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.
Language eng
Field of Research 091399 Mechanical Engineering not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2007, Trans Tech Publications
Persistent URL http://hdl.handle.net/10536/DRO/DU:30007330

Document type: Journal Article
Collections: Centre for Material and Fibre Innovation
GTP Research
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