A Note on Pseudo-Acoustic Emission Sources

    Volume 4, Issue 3 (May 1976)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Page Count: 4


    Egle, DM
    Professorsummer employee, University of OklahomaLawrence Livermore Laboratory, University of California, NormanLivermore, Okla.Calif.

    Brown, AE
    Technical associate, Lawrence Livermore Laboratory, University of California, Livermore, Calif.

    Abstract

    This paper describes an experimental comparison of the stress waves generated by three sources of simulated acoustic emission events: a piezoelectric generator, an electric spark, and a pulsed laser. The stress waves produced by the electric spark indicate that the stress generating mechanism is the thermally excited pressure pulse in the air surrounding the spark. Each of the sources is shown to be capable of producing stress waves of less than 1-μs duration, but the piezoelectric generator appears to be the most advantageous technique.


    Paper ID: JTE10201J

    DOI: 10.1520/JTE10201J

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    Author
    Title A Note on Pseudo-Acoustic Emission Sources
    Symposium , 0000-00-00
    Committee E07