Radiation pattern of lamb waves generated by electromagnetic acoustic transducers

Bo Liu, Chao Ran Deng, Chuan Liu Jiang, Guo Fu Zhai, Lei Kang

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Radiation pattern is an important characteristic of Lamb waves when applied to nondestructive testing and evaluation. However, this character cannot be analyzed by 2-D analytical or numerical models. In this paper, a 3-D finite element (FE) model is presented and frequency domain analysis is used to study the acoustic field of Lamb waves generated by electromagnetic acoustic transducers (EMATs). Based on the FE model, the divergence angle of S0 Lamb wave is calculated to be 6.6°. Experiments are carried out to measure the in-plane displacements of Lamb waves and experiment results agree well with the simulation results.

    Original languageEnglish
    Title of host publicationFENDT 2014 - Proceedings, 2014 IEEE Far East Forum on Nondestructive Evaluation/Testing
    Subtitle of host publicationNew Technology and Application, Increasingly Perfect NDT/E
    EditorsQinxue Pan, Chunguang Xu, Liu Yang
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages102-106
    Number of pages5
    ISBN (Electronic)9781479947300
    ISBN (Print)9781479947317
    DOIs
    Publication statusPublished - 16 Oct 2014
    Event2014 IEEE 11th Far East Forum on Nondestructive Evaluation/Testing: New Technology and Application, FENDT 2014 - Chengdu, China
    Duration: 20 Jun 201423 Jun 2014

    Conference

    Conference2014 IEEE 11th Far East Forum on Nondestructive Evaluation/Testing: New Technology and Application, FENDT 2014
    Country/TerritoryChina
    CityChengdu
    Period20/06/1423/06/14

    Keywords

    • EMATs
    • finite element model
    • Lamb wave
    • radiation pattern

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