Wire Arc Additive Manufacturing (WAAM) is emerging as a key technology for the resource-efficient manufacture, repair and remanufacture of large-scale metallic components. However, the complex thermal history inherent to WAAM gives rise to challenges related to microstructure, defects, residual stresses, geometrical control and anisotropic material behaviour, all of which may influence component integrity and performance. 

This special session will bring together researchers and industrial practitioners working across the WAAM value chain, from process development and material science to testing, modelling, qualification and industrial implementation. Contributions addressing experimental, computational and data-driven approaches are welcome.

Topics of interest include, but are not limited to:

• WAAM process development and process–material interactions
• Microstructure evolution and process–structure–property relationships
• Defect formation, cracking and defect mitigation
• Residual stresses, distortion and geometrical control
• Mechanical properties, fatigue, fracture and structural integrity
• Process monitoring, sensing and data-driven process control
• Modelling and simulation of WAAM processes and component
• Non-destructive testing and quality assurance
• Post-processing and heat treatment
• WAAM for repair, remanufacturing and life extension
• Qualification, certification and industrial implementation
• Sustainability and resource efficiency