Lucas F.M. da Silva (left) is Assistant Professor at the Department of Mechanical Engineering of the Faculty of Engineering of the University of Porto (FEUP). David A. Dillard (right) is the Adhesive and Sealant Science Professor of Engineering Science and Mechanics at Virginia Tech. Bamber R.K. Blackman (left) holds a lectureship in the Department of Mechanical Engineering at Imperial College London where he is also Deputy Director of Research. Robert D. Adams (right) is an Emeritus Professor of Applied Mechanics at the University of Bristol and a Visiting Professor of the University of Oxford.