Abstract
The purpose of the present measurements was to measure the axial residual strains at the 6:00 position of a girth-weld in the presence of a crack which had been propagated a few millimeters from the inside diameter of the line pipe. Residual strains have been measured in the axial direction of a cracked girth weld in a line pipe. The crack was approximately 3 mm deep and ran 20 cm around the circumference near the mid weld. The residual strain distribution was compared to the distribution before the crack was introduced. The crack appears to introduce a large bending moment in the weld and the strain distribution shows that the tube is close to plastic collapse.
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