October 10, 2025

Effects of Hydrogen Environment on the Mechanical Property and Structural Integrity of X80 Pipeline Girth Weld

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Hydrogen environments significantly influence the mechanical properties and structural integrity of X80 pipeline gird welds.
Experimental tests indicate that cracking risks in girth welds differ between circumferential and longitudinal orientations.
Finite element modeling combined with optimization algorithms is proposed to assess stress-strain relationships in hydrogen conditions.
Preliminary evaluations suggest critical implications for fracture assessments of pipeline welds in hydrogen transport contexts.

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This analysis reveals effects of hydrogen on girth weld mechanical properties, highlighting risks in hydrogen-blended environments.

Yu et al. (2025) studied this question.

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