Review for Research of Fatigue Life Prediction of Welded Structures under Complex Loads and Extreme Environments
The welded joints were susceptible to defects and stress concentration,rendering them vulnerable areas for fatigue crack initiation and propagation under fatigue loads.In comparison to homogeneous materials,the microstructure and stress localization in each of regions for the joints fur-ther complicated the fatigue issue in welded structures.Unlike ideal experimental conditions,the actu-al service environments of welded structures were intricate,it was necessity to consider the coupling characteristics between environmental factors and welded structures when predicting welded structure fatigue life.Therefore,the internal factors influencing welded structures were summarized and ana-lyzed while reviewing existing life prediction models from perspectives encompassing complex loads and extreme service environment.Combining the latest research progresses,the recommendations were proposed to enhance fatigue life assessment methods for the welded structures.
welded structureinfluencing factorcomplex loadextreme environmentlife pre-diction model