Enhancing Fatigue Life of Welded Joints in Wind Power Towers: A Comparative Study of Residual Stress Elimination Methods

This paper investigates welding-induced residual stresses in wind power towers and their critical influence on structural stability and fatigue strength. Various methods for mitigating welding residual stress and enhancing fatigue performance are examined. The study analyzes the underlying principles and effectiveness of key stress relief techniques, including heat treatment and vibration aging. In addition, approaches to improving fatigue strength—such as the optimization of welding processes a