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    Development and Application of Fatigue Data for Structural Steel Weldments


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    Traditionally, designs of and design specifications for welded joints have been based on test data. This paper describes axially loaded specimens containing butt and fillet welds, welded beams with typical beam details, and tubular welded-joint specimens, as well as the characteristics of the fatigue testing systems. Parameters affecting the fatigue resistance of structural steel weldments, for example, notches, residual stresses, and tensile strength, are reviewed in the light of test results. Fatigue design criteria for weldments are also discussed. Recent applications of linear elastic fracture mechanics and the concepts of strain-cycled fatigue to quantify the initiation and propagation of fatigue cracks in weldments are presented. Continued and refined application of these analytical techniques, quantification of environmental effects and of acceptance levels of internal discontinuities, and the application of load spectra to the design of weldments are recognized as research goals for the future.


    fatigue tests, weldments, fatigue of metals, residual stress, stress concentration, crack initiation, crack propagation, fracture mechanics, environments

    Author Information:

    Reemsnyder, HS
    Supervisor, Fatigue and Fracture, Research Department, Bethlehem Steel Corporation, Bethlehem, Pa

    Committee/Subcommittee: E08.05

    DOI: 10.1520/STP33386S