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Study shows scale effect insignificantly impacts endurance limit of welded joints, indicating weld quality issues.
Using the hypothesis of the weakest link and the Weibull distribution, the influence of the scale factor on the endurance limit of welded joints has been studied in comparison with corset cylindrical specimens-simulators of the heat-affected zone. It is shown that for most metal structures with a thickness of welded sheets up to 40 mm, the scale effect does not manifest itself if the fatigue characteristics of the metal of the heat-affected zone are determined by the results of tests of standard corset specimens-simulators.
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Manzhula et al. (2022) studied this question.
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