He is a senior staff scientist and team lead for materials processing within the Applied Materials and Performance Group at Pacific Northwest National Laboratory. His research focus is on the formability, joining, and manufacturing of materials for industrial applications, and in the development of new solid state joining and processing technologies for advanced materials for future energy applications, including vehicle technologies, power generation, hydrocarbon, and chemical transport and processing. He has been researching and developing Friction Stir Welding and Processing at the lab since 1997. He currently leads a portfolio of projects investigating Friction Stir Joining and Processing as a new manufacturing technology and programs in solid-state compaction and processing of new materials for high temperature and high-performance applications. He has over 25 publications on solid state joining and processing, more than 30 years’ experience in the microstructural and mechanical characterization of materials, and in the exploration of process/property relationships.