This article covers in outline all the main features of the engineering significance of composite matrials. It explains how the idea of a modern composite material arose. This occurred in two ways. The first was the desire to utilise the properties of very strong and stiff fibres and the second was to rise fibres to correct deficiencies in other materials; to stiffen plastics and to avoid brittleness in ceramics. A definition of a composite is given so as to avoid confusion with conventional materials. Some aspects of the commercial growth of composite materials are dealt with and some areas requiring development are mentioned.

Keywords: composite materials