...Feng Qingshan; Chang Qun; Jia Haidong; Wu Yi; Dai Lianshuang; Cao Yuguang The failure accidents in girth weld of pipelines occur frequently due to the combination of internal defects and external loads. However, the research on the fracture behavior of girth weld defects is relatively poor...

...Youn-Young Jang; Nam-Su Huh; Ik-Joong Kim; Young-Pyo Kim Long-distance pipelines for the transport of oil and natural gas to onshore facilities are mainly fabricated by girth welding, which has been considered as a weak location for cracking. Pipeline rupture due to crack initiation and propagation...

...: Hardayal S. Mehta. 22 08 2013 07 01 2015 23 02 2015 A key influence factor in the strain-based assessment of pipeline girth weld flaws is weld strength mismatch. Recent research has led to a framework for tensile strain capacity as a function of weld flow stress (FS) overmatch...

.... (1) For CWP specimens notched into the weld metal, X80 specimens failed by plastic necking of the pipe body, whereas X100 CWP specimens failed due to cleavage fracture from the notch in the girth weld. Although the girth weld metal had very low fracture toughness at −20 °C in both pipe grades (CTOD...

... August 22, 2013; published online October 10, 2013. Assoc. Editor: Hardayal S. Mehta. 01 08 2012 22 08 2013 Weld strength mismatch is a key factor in the strain based assessment of flawed girth welds under tension. A strength overmatching weld shields potential flaws within the weld...

... for corrective actions are provided as a cost-effective life management process to maintain the piping system integrity. This paper provides examples demonstrating that the girth welds ranked below the top five to six welds are subject to significantly less applied stress and have substantially more creep...