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Study on Dispersion Characteristics of Ultrasonic Guided Wave

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Abstract:

Electromagnetic ultrasonic nondestructive testing technology, which it have the advantages of withstand high temperature and without coupling agent,is widely used in Nondestructive Testing (NDT) field. To effectively detect the defects, the dispersion characteristics and multimode of guided waves in the plate are studied by the disperse simulation software, and the variation of dispersion curve is analyzed by the geometric parameters and materials of plate. The results showed that the dispersion characteristics of guided wave in the plate is depended on the thickness and material of plate, and dispersion and the multimode characteristics of plate are better at low frequencies and smaller thickness. This is helpful to selection of Electromagnetic acoustic transducer (EMAT) parameter and detection operating point of guided wave.

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Periodical:

Applied Mechanics and Materials (Volumes 333-335)

Pages:

1713-1718

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.333-335.1713

Citation:

Cite this paper

Online since:

July 2013

Authors:

Song Song Li, Xiao Ming Chen, Xiang Li

Keywords:

Dispersion Characteristics, Electromagnetic Ultrasonic, Guided Wave, Lamb Waves, Nondestructive Testing (NDT)

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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References

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