Abstract
An important limitation of laboratory-scale welded specimens is that they do not contain the high tensile residual stresses, approaching yield strength in magnitude, which are present in real welded structures. A new test method is proposed which aims to simulate the situation in real structures by cycling the specimen from yield strength downwards. Tests performed on transverse butt joints in structural steel under these conditions and under fixed stress ratios of −1, 0 and +0.5 showed that the proposed method gave the lowest fatigue lives.
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