Classification of technical materials and role of composites. Main types of composites and their anisotropy and symmetry. Adhesion and its significance in composites. Particles and ins sorts in composites. Sorts of fibres in composites. Voigths (longitudal) model of composite stiffness. Reuss (perpendicular) model of composite stiffness. Strength of fibre composites. Influence of length of fibers. Specific properties of nanocomposites. Carbon ond its use in nanocomposites. Other nanomaterials for composites : metals, polymers etc. Liquid crystals and its use in composites. Main technical applications of nanocomposites.