Professor Greenhalgh has a PhD in damage growth in composites and over thirty-seven years' experience in composites research and teaching. Between 1987 and 2003 he worked at RAE (now QinetiQ), conducting research on a broad range of aspects of polymer composites. In 2003 he joined Aeronautics at Imperial College London, and is now a Professor of Composite Materials, Royal Academy of Engineering Chair in Emerging Technologies and co-Head of the Composite Centre. He has a H-index of 44, having published over 100 papers (8075 citations), two textbooks and four patents. He has initiated European working groups on composites fractography, conducted numerous failure investigations and has led involvement in high profile component failures (e.g. Formula One crashes) and as an expert witness in litigation cases. He has delivered training courses on fractography to industry and university students. He is recognised as one of the world experts on failure analysis of composites.