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11 cze 2024 · The reinforced girth weld not only increases the strength but also improves the ductility. The total elongation of reinforced girth weld reaches 30%, which is significantly higher than 21% for that without reinforcement. The tensile properties of pure base metal (without girth weld) were also tested and are listed in Table 3 for reference.
1 kwi 2024 · This paper provides a comprehensive review on the characteristics of strength mismatch, the difficulties faced in achieving weld strength over-match in high strength pipelines and the impact of weld strength under-match on structural integrity of pipelines.
Girth weld coatings are applied in the field where the conditions are not as good as in the mill where the mainline coatings are applied. Their performance depends on the bonds to the substrate and to the mainline coating, the moisture seal at the joints, and water absorption.
28 lip 2023 · In this study, an artificial neural network model was proposed to predict the failure risk of pipeline girth welds with defects. Firstly, many pipeline girth weld failure cases, pipeline excavation, and inspection data were collected and analyzed to determine the main factors influencing girth weld failure.
This study aims to investigate the ductile fracture characteristics of center cracks on the outer surface of girth welds in high-grade steel pipelines under external loads through large-scale CWP tensile tests and advanced numerical simulations.
20 sie 2013 · This flaw assessment procedure is based on fracture mechanics methods and was designed to meet the particular requirements of pipeline girth welds. It provides a method of calculating flaw acceptance which is an alternative to workmanship-based flaw acceptance given in the main document.
25 lut 2023 · 1 Introduction. All over the world, the pipelines with large diameter and relatively thin wall thickness are used for transporting of hydrocarbons (crude oil, natural gas, etc.). These pipelines or piping systems are usually comprised of girth welded joints.
