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    Occurrence of Fretting in Practice and Its Simulation in the Laboratory

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    Fretting arises in practice where a structure or multicomponent system involving contacting surfaces experiences vibration. Examples are the false brinelling of wheel bearings when automobiles are transported by road or the damage which can arise in gun mountings on military vechicles. Fretting also occurs when one of the members of a contact is subjected to cyclic stressing, as in the contact region between the hub and wheel seat of a wheel-on-axle or flywheel-on-shaft assembly. In attempting to simulate fretting situations in the laboratory, attention must be given to the contact configuration, the mode of exciting oscillatory slip, the control and measurement of the amplitude of slip, alignment and application of the normal load, and control of the environment. Finally, the resultant damage must be assessed and the method used should take into account not only the material removed from the surfaces but the material transferred between the surfaces as well as surface deformation and cracks, which in practice could have a profound influence on the life of the component.


    fretting, wear, materials fatigue, testing machines, slip amplitude, frequency, environment, high temperature, measurement, material transfer

    Author Information:

    Waterhouse, RB
    Reader in metallurgy, University of Nottingham, Nottingham,

    Committee/Subcommittee: G02.30

    DOI: 10.1520/STP29393S