Fibre reinforced composites are gaining importance as engineering materials due to their excellent ability to be tailor made to suit specific end use application. Properties of composites are not only decided by the properties of materials used for matrix and reinforcement, but also on structural form of reinforcement and its impact on interface created between reinforcement and matrix. For optimizing the property requirements of composites, therefore, proper thought must also be given to the structural form to be chosen for reinforcement. The textile fibres are used in composites as fibres themselves, or in the form of yarns, straight, twisted, inter-twined, laced, woven, knitted, non-woven or three – dimensionally structured by weaving or knitting techniques.
In this paper latest developments in natural as well as man-made fibres are discussed. Similarly the importance of fibres, yarns and fabric structure is explained to make the tailor-made composite.