The aim of the subject is to provide the skills and knowledge necessary for the design and verification of mechanical elements, using both traditional and numerical methods . The topics covered are: - integration of structural mechanics (residual stress, variable amplitude fatigue and basic multi-axial fatigue; - principles and procedures for design and verification of some of the major elements of machines and joints (axes and shafts, axial symmetric solids, hub-shaft connections, bearings, springs, threaded fasteners and bolts, welded joints)