A spectral multiaxial fatigue reliability approach for riser girth welds based on the master S-N curve

Key Points

• Reliability assessment indicates that girth welds exhibit significant fatigue resilience under multiaxial loading scenarios.
• Important findings show enhanced reliability metrics through spectral analysis tied to the master S-N curve framework.
• Observational analysis across various loading conditions identifies weaknesses in current girth weld designs.
• This innovative approach supports enhanced performance and longevity of welded structures, necessitating further validation.