Abstract

The elastic and plastic strain data of two tubular specimens, with longitudinal and circumferential metal loss at areas on their external surface, tested under internal pressure are presented and analyzed. The specimens were cut from two longitudinally welded tubes made of low carbon steel with nominal outside diameters of 76.7 and 102 mm and nominal wall thicknesses of 2.04 and 3.2 mm respectively. Each of the tested specimens had milled metal loss areas simulating external longitudinal and circumferential corrosion defects. Digital Image Correlation was employed to determine elastic and plastic strains at the metal loss defects and their results were verified and compared with data collected with electrical resistance strain gages and results obtained with a finite element numerical solution.

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