You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    If you are an ASTM Compass Subscriber and this document is part of your subscription, you can access it for free at ASTM Compass

    The Effect of the Contact Conditions and Surface Treatments on the Fretting Fatigue Strength of Medium Carbon Steel

    Published: 01 January 2000

      Format Pages Price  
    PDF (348K) 14 $25   ADD TO CART
    Complete Source PDF (13M) 543 $149   ADD TO CART

    Cite this document

    X Add email address send
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Fretting fatigue tests characterized with employing a contact bridge pad clamped to a fatigue specimen were conducted to find the effect of shapes of contact pads. The shapes of the contact edge of the pad used in the test were sharp and round. The relative slip amplitude during fatigue testing was measured and the effect of the location of the displacement sensor was discussed with the result of the stress analysis around the contact area. The effect of molybdenum coating on the fretting fatigue strength was also investigated.

    It was found that by using the round edge pad, reproducible fretting scars could be obtained and also the round edge pad prevented the fatigue failure at the contact edge. A remarkable difference of the measured slip amplitude was found by the location of the displacement sensor. The molybdenum coating increases the fretting fatigue limit about 1.5 times that of the fretting fatigue strength of uncoated specimens. Fretting fatigue cracks always initiate at the inner site of the contact area. The results were explained from the results of contact stress analysis where the maximum shear stress occurred at the inner surface of the contact area in both types of the pad.


    fretting fatigue, bridge pad, contact edge shape, stress analysis, sprayed molybdenum coating

    Author Information:

    Kubota, M
    Technical Assistant, Kyushu University, Higasi-ku, Fukuoka,

    Tsutsui, K
    Graduate School of Kyushu University,

    Makino, T
    Sumitomo Metal Industries, Ltd., Amagasaki, Hyogo,

    Hirakawa, K
    Professor, Kyushu University,

    Committee/Subcommittee: E08.04

    DOI: 10.1520/STP14749S