Wideband low frequency generation and detection of Lamb and Rayleigh waves using electromagnetic acoustic transducers (EMATs)

Ultrasonics
S Dixon, S B Palmer

Abstract

This paper describes a new type of non-contact electromagnetic transducer (EMAT) that can be used to generate both Lamb and Rayleigh waves on metal samples. The generated waves are wideband and low frequency with a dominant frequency content centred at approximately 200 kHz extending to around 500 kHz. The transducers have been used on both aluminium and steel, but operate more efficiently on aluminium due to its lower electrical resistance and density when compared to steel.

References

Jan 1, 1986·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·J A CooperS B Palmer

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Citations

Dec 7, 2007·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Daniel Hesse, Peter Cawley
Apr 4, 2018·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Pouyan Khalili, Peter Cawley
Sep 6, 2006·Physics in Medicine and Biology·S P DoddV F Humphrey

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