Defect classification by pulsed eddy current technique in con-casting slabs based on spectrum analysis and wavelet decomposition

•A new PEC feature (spectrum analysis after wavelet decomposition) is investigated.•The spectrum of the detail decomposited exceeding 1.7kHz is more effective.•The high-frequency components are dominant among the surface and sub-surface defects.•The PCA-LDA and Bayesian classifier can correctly clas...

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Veröffentlicht in:	Sensors and actuators. A. Physical. 2013-12, Vol.203, p.272-281
Hauptverfasser:	Qiu, Xuanbing, Zhang, Peng, Wei, Jilin, Cui, Xiaochao, Wei, Chao, Liu, Lulu
Format:	Artikel
Sprache:	eng
Schlagworte:	Bayesian classification Classification Cracks Decomposition Defect classification Defects Eddy currents Linear discriminant analysis Principal component analysis Pulsed eddy current Slabs Spectrum analysis Wavelet Wavelet decomposition
Online-Zugang:	Volltext
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