John Francis

John Francis is a Professor in the Department of Mechanical and Aerospace Engineering at The University of Manchester. His research focuses on welding and cladding processes, welding metallurgy, residual stresses in welded joints and clad surfaces, and microstructure-stress relationships in welds. He has over 20 years of experience in welding and cladding technologies, having previously worked with CSIRO in Australia. His work involves understanding the evolution of microstructures and stresses in joints during welding and post-weld heat treatment, with the aim of improving productivity and structural performance. He is a Fellow of the Institute of Materials, Minerals and Mining and is accredited as a European/International Welding Engineer (EWE/IWE).

John A Francis is a researcher at the University of Manchester with expertise in welding engineering, welding metallurgy, welding technology, and residual stress analysis. His work focuses on understanding the behavior of residual stresses in various welding processes, including arc, laser, and electron-beam welding, particularly in ferritic and austenitic steels used in power plant and nuclear applications. He investigates the effects of microstructural changes, phase transformations, and welding parameters on mechanical properties and residual stress distributions. His research also addresses the role of defects and filler metal characteristics in weld performance. Francis has contributed to the development of models for heat source behavior and residual stress measurement techniques.