received his BS in 1959, his MA in 1963 and his Ph.D. in 1963 from the University of Cambridge. He has been a Senior Lecturer, Cambridge College of Arts and Technology; a tutor, University of Cambridge; a Senior Research Scientist, Ford Motor Company; a Battelle Visiting Professor (Electron Microscopy), Ohio State University; a Professor, University of Pennsylvania, where he was Chairman, Department of Metallurgy & Materials Science; Gast-Professor of Physics, University of Vienna; and Visiting Professor of BioMetallurgy, University of Sorbonne, Paris. He is presently Professor and Graduate Group Chairman, Department of Materials Science & Engineering, University of Pennsylvania. His research has focussed on the strength, structure and fatigue of materials, in which areas he has published in excess of 250 papers.
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