Abstract
Fatigue performance is critical for welded offshore wind structures due to high cyclic loading and limited maintenance opportunities. Laser–arc hybrid welding (LAHW) is a promising, efficient joining method for mass production, offering deep penetration, high welding speeds, and significant reductions in consumables and energy use. With optimized parameters, laser-based welding can enhance mechanical integrity and fatigue life, but wider industrial adoption is still limited by the lack of standardized guidelines.