Mike Ashby is one of the world's foremost authorities on materials selection. He is sole or lead author of several of Elsevier's top selling engineering textbooks, including Materials and Design: The Art and Science of Material Selection in Product Design, Materials Selection in Mechanical Design, Materials and the Environment, Materials and Sustainable Development, and Materials: Engineering, Science, Processing and Design. He is also co-author of the books Engineering Materials 1&2, and Nanomaterials, Nanotechnologies and Design.Hugh Shercliff is an Emeritus Associate Professor in Materials in the Department of Engineering at the University of Cambridge(UK). His research experience spanned all classes of engineering materials, with an emphasis on process modelling applied tothe forming and joining of light alloys. He is co-author with Michael Ashby and David Cebon of Materials: Engineering, Science, Processing and Design, Fourth Edition (Butterworth-Heinemann, 2018), and Introduction to Materials Science and Engineering (Butterworth-Heinemann, 2023).David Cebon is Professor of Mechanical Engineering at Cambridge University in the UK.