Volume 4, Issue 3 (May 1976)

    Monitoring to Determine the Dynamics of Fatigue Testing


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    These investigations were begun to monitor the sonic response during the fatigue life testing of cantilever specimens; they led to the discovery that the power spectral density from the second overtone (3 × fundamental) changed with time, originally exceeding that from the fundamental. Overtones may have a pronounced influence on fatigue testing, and the experimental results should lead to consideration of the possible dynamic effects introduced by such overtones. Tests show that changes can be detected as a consequence of work hardening and crack growth. Possibly this method may be developed as a nondestructive testing technique.

    Author Information:

    Collacott, RA
    Senior lecturer and Director, U. K. Mechanical Health Monitoring Group, Leicester Polytechnic, Leicester,

    Stock #: JTE10199J

    ISSN: 0090-3973

    DOI: 10.1520/JTE10199J

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    Title Monitoring to Determine the Dynamics of Fatigue Testing
    Symposium , 0000-00-00
    Committee E28