STP1077: Acoustic Emission Detection of Crack Presence and Crack Advance During Flight

    McBride, SL
    faculty members, The Royal Military College of Canada, Kingston, Ontario

    Pollard, MD
    faculty members, The Royal Military College of Canada, Kingston, Ontario

    MacPhail, JD
    faculty members, The Royal Military College of Canada, Kingston, Ontario

    Bowman, PS
    faculty members, The Royal Military College of Canada, Kingston, Ontario

    Peters, DT
    faculty members, The Royal Military College of Canada, Kingston, Ontario

    Pages: 10    Published: Jan 1991


    Abstract

    Results are presented which show that it is possible to detect crack growth and crack presence in airframe components during flight. To accomplish this, a data acquisition system has been developed specifically for in-flight applications. It is shown that crack advance of less than 1 mm2 was readily detected during flight and the fracture-related acoustic emission signals unambiguously identified.

    Keywords:

    acoustic emission, in-flight monitoring, crack growth, data acquisition


    Paper ID: STP19090S

    Committee/Subcommittee: E07.04

    DOI: 10.1520/STP19090S


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