The need for modelling of materials behaviour under various mechanical conditions is driven by the evolution of computer capacity and the ability of scientists to address complex mechanical problems. Reliable models for materials behaviour, including accurate numerical values of parameters, are necessary for a continued beneficial development of the computational side of solid mechanics. High rate plasticity, thermally assisted creep and phase transformations are only a few examples of areas where more accurate models are needed. Experiments are necessary for the establishment of models and parameters, and modified versions of conventional test methods can make important contributions. Also modern optical methods offer a high potential for future experimental development. Numerical simulations of experiments and so-called inverse modelling are also frequently used techniques. In this book researchers with an interest in the area of experimental and computational aspects of materials modelling present modern advance methods and results.