Analyses of Electromagnetism Guided Waves in Metal Pipe by Using of Multi-Scale Entropy

Shu Wang Chen; Dong Mi; Zhang Sui Xu

doi:10.4028/www.scientific.net/AMR.301-303.1639

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 301-303Analyses of Electromagnetism Guided Waves in Metal...

Analyses of Electromagnetism Guided Waves in Metal Pipe by Using of Multi-Scale Entropy

Abstract:

A short time high power pulse is stimulated by the LC circuit. Through a send winding, the electromagnetic guided wave signals transmit in the metal pipes. A receive winding is mounted around the pipe to collect the receive signals. The receive signals are different if there are several defects in the metal pipe or not. To analyze the instantaneous pulse group, a method of multi-scale entropy is adopted. The receive signals are transformed to a data sequence. In terms of the entropy values of the sequence at different scales, the complexity of the data sequence is gained. The defect information is contained in the entropy value varied curve.

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Periodical:

Advanced Materials Research (Volumes 301-303)

Pages:

1639-1642

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.301-303.1639

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Online since:

July 2011

Authors:

Shu Wang Chen, Dong Mi, Zhang Sui Xu

Keywords:

Electromagnetic Guided Wave, Metal Pipe, Multi-Scale Entropy, Nondestructive Testing (NDT)

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References

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