Effect of Residual Stresses on the Fatigue Crack Propagation in Welded Joints

    Volume 2, Issue 3 (March 2005)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Published Online: 28 February 2005

    Page Count: 18


    Gubeljak, N
    University of Maribor, Faculty of Mechanical Engineering, Maribor, SI

    Predan, J
    University of Maribor, Faculty of Mechanical Engineering, Maribor, SI

    Pippan, R
    Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben,

    Oblak, M
    University of Maribor, Faculty of Mechanical Engineering, Maribor, SI

    (Received 21 January 2004; accepted 4 May 2004)

    Abstract

    The effect of residual stress on the fatigue crack growth was investigated for cyclic tension. Three-point bend specimens were used with through thickness notches at the center line of the welded joint. The experiments were performed for different load amplitudes and load ratios under conditions of small-scale yielding. The influence of the residual stresses on fatigue crack growth was estimated by experimentally observed fatigue crack growth rate and measurement of residual stresses at the surface of specimen. This paper describes an approach taken in two models to estimate the residual stress effect on fatigue crack propagation and to predict remaining service life of a welded structure.


    Paper ID: JAI12036

    DOI: 10.1520/JAI12036

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    Title Effect of Residual Stresses on the Fatigue Crack Propagation in Welded Joints
    Symposium Fatigue and Fracture Mechanics: 34th Volume, 2003-11-21
    Committee E08