Volume 26, Issue 6 (November 1998)

    Measurement and Interpretation of Fatigue Crack Growth in 7075 Aluminum Alloy Using Acoustic Emission Monitoring

    (Received 4 November 1997; accepted 2 July 1998)

    CODEN: JTEOAD

      Format Pages Price  
    PDF 8 $25   ADD TO CART


    Abstract

    A method for monitoring crack growth during highcycle fatigue tests was demonstrated using acoustic emission (AE) monitoring. Windowing techniques were employed during the recording and interpreting of the AE data. The results provided linear relationships between AE events and amplitudes and crack lengths. The fatigue crack growth results from the AE data were in very good agreement with data measured using an optical microscope.

    Fractographic observations of the crack and specimen surfaces showed that secondary cracks formed and linked to the main crack during intermediate stages of crack growth. The crack growth rate calculated from AE data reflected the formation of secondary cracks in this period.


    Author Information:

    Gong, Z
    Royal Military College of Canada, Kingston, Ontario

    DuQuesnay, DL
    Royal Military College of Canada, Kingston, Ontario

    McBride, SL
    Acoustic Emission Monitoring Services, Inc., Kingston, Ontario


    Stock #: JTE12114J

    ISSN: 0090-3973

    DOI: 10.1520/JTE12114J

    ASTM International is a member of CrossRef.

    Author
    Title Measurement and Interpretation of Fatigue Crack Growth in 7075 Aluminum Alloy Using Acoustic Emission Monitoring
    Symposium , 0000-00-00
    Committee E08