There is a tremendous demand for high strength and low-density materials particularly in the area of dynamic structures. The efficiency of dynamic structures such as aircraft, high speeds manufacturing machinery, power generating equipment and aerospace components could be increased to a great extent by improving the structural efficiency of materials. It is convincing from the above lines that - the key factors that decide ultimately the extent of perfection and sophistication achieved by modern technology is the advances in the field of materials and in a way it is.