The hydrogen effect on a X65 carbon steel was investigated by tensile tests under both ex-situ and in-situ charging conditions. fractured samples were characterized compared using combination of scanning electron microscopy, backscattering diffraction, energy-dispersive spectroscopy. work highlights that the is necessity for investigation detrimental effects studied material, where pronounced r...

In this work, the hydrogen fatigue of pipeline steel X60, its girth welds and weld defects were investigated through in situ testing. A novel gaseous charging set-up was developed, which involves a sample geometry that mimics small-scale with high internal gas pressure. The effect by measuring crack initiation growth, using direct current potential drop (DCPD) set-up, probes outer surface speci...

Most of the standards available for assessment failure pressure corroded pipelines are limited in their ability to assess complex loadings, and estimations conservative. To overcome this research gap, study employed an artificial neural network (ANN) model trained with data obtained using finite element method (FEM) develop equation predict a pipeline single corrosion defect. A analysis (FEA) m...

The ductile fracture arrest may present supplementary requirement for selection of base material for most demanding steel welded structures. The most representative one with such requirement are gas pipelines. Therefore to ensure that the pipeline materials has adequate toughness to arrest a ductile fracture, the pipe material must be designed and tested in accordance with the specific procedur...