Thermo-Mechanical and Fatigue Analysis of Welded Structures

Welded joints are critical points of potential failure in structural engineering, subjected to complex thermal cycles and cyclic loading. Understanding how heat and stress interact during and after welding is essential for designing safe, long-lasting structures. This text-based course guides you through the fundamental principles of thermo-mechanical behavior and fatigue life estimation in welded structures. You will transition from understanding basic heat transfer in welding to performing stress and fatigue calculations that ensure structural integrity. What you'll learn: - Understand the foundational physics of heat flow, thermal cycles, and temperature distribution during welding. - Analyze residual stresses and distortion patterns generated by localized heating and cooling. - Apply modern fatigue analysis methods, including nominal stress and structural hot-spot stress approaches, to predict weld life. - Evaluate the impact of weld defects, joint geometry, and post-weld heat treatments on fatigue resistance. - Reference current engineering standards and fatigue design curves to assess welded joint reliability under cyclic loading. The course begins with core definitions of welding metallurgy and thermal mechanics before progressing to stress analysis techniques and fatigue estimation workflows. Each module reinforces theoretical concepts with step-by-step written calculations and practical engineering scenarios. This course is designed for beginner to intermediate mechanical, civil, and structural engineers, as well as students seeking a solid foundation in weld analysis. No advanced background in finite element analysis is required. Start reading today to master the mechanics of welded joints and design safer, more durable structures.