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
    Volume 3, Issue 4 (April 2006)

    The Effect of Large Strain Cycling on the Fatigue Strength of Welded Joint

    (Received 23 May 2005; accepted 25 September 2005)

    Published Online: 00 March 2006


      Format Pages Price  
    PDF (200K) 11 $25   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


    Earthquakes sometimes create damages to steel structures. The structures which have not been seriously damaged are still used after an earthquake. The fatigue strength of these structures, however, might have been decreased due to the cyclic loads during an earthquake. In order to clarify the effect of seismic loading on the fatigue strength of the welded joint of a steel structure, a high cycle fatigue test of welded joint after large straining was performed. Although a large residual tensile stress induced by plastic deformation caused little effect on the fatigue limit even in gross plasticity condition, the cyclic application of large strain substantially decreased the fatigue limit. An application of large straining for a small number of cycles initiated a short crack at the weld toe in the low cycle fatigue manner, which acted as a trigger for high cycle fatigue failure after seismic loading. The reduction of fatigue limit depended on the size of the crack. The linear elastic fracture mechanics was used to evaluate the fatigue strength of welded joint. Although the short crack was initiated by cyclic application of plastic straining and the crack was in gross plasticity, the ΔKth of the small crack determined the fatigue limit of small-cracked welded joint after seismic loading.

    Author Information:

    Okuya, K
    Professor, Kyushu Polytechnic College, Fukuoka,

    Kondo, Y
    Professor, Kyushu University, Fukuoka,

    Stock #: JAI13232


    DOI: 10.1520/JAI13232

    Title The Effect of Large Strain Cycling on the Fatigue Strength of Welded Joint
    Symposium ,
    Committee E08