An approach based on expectation-maximization algorithm for parameter estimation of Lamb wave signals

•Develop a model function with five parameters to model the Lamb wave signal.•Adopt EM algorithm to obtain the parameters.•Study the convergence property using synthetic signals.•Experimentally study the effectiveness of mode identification and time locating. In the structural health monitoring or n...

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Veröffentlicht in:	Mechanical systems and signal processing Jg. 120; S. 341 - 355
Hauptverfasser:	Jia, Hongbo, Zhang, Zhichun, Liu, Hongwei, Dai, Fuhong, Liu, Yanju, Leng, Jinsong
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	Berlin Elsevier Ltd 01.04.2019 Elsevier BV
Schlagworte:	Algorithms Aluminum Damage assessment Damage detection Dispersion effect Elastic waves EM algorithm Gabor pulse Lamb wave Lamb waves Mathematical models Maximization Metal plates Multi-mode characteristic Nondestructive testing Parameter estimation Structural damage Structural health monitoring Wave dispersion Lamb wave Parameter estimation Gabor pulse Multi-mode characteristic EM algorithm Dispersion effect
ISSN:	0888-3270, 1096-1216
Online-Zugang:	Volltext
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