Feature Extraction of the Crack AE Signal Using HHT Transform

K.F. He; Z.J. Zhang; X.J. Li

doi:10.4028/www.scientific.net/AMM.340.441

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 340Feature Extraction of the Crack AE Signal Using...

Feature Extraction of the Crack AE Signal Using HHT Transform

Abstract:

The use of Hilbert-Huang transform (Hilbert-Huang transform, HHT) on crack AE signal study, through empirical mode decomposition (empirical mode decomposition, EMD) AE signal is decompose into a number of intrinsic mode functions (Intrinsic mode Function, IMF), Hilbert spectrum and Hilbert marginal spectrum are calculated. The results show that crack depth structure bearing of acoustic emission are detected accurately by the number of acoustic emission events, time and crack the degree from Hilbert spectrum and Hilbert marginal spectrum.

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Periodical:

Applied Mechanics and Materials (Volume 340)

Pages:

441-444

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.340.441

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Online since:

July 2013

Authors:

K.F. He, Z.J. Zhang, X.J. Li

Keywords:

Acoustic Emission (AE), Crack, Feature Extraction, Hilbert - Huang Transform

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