Study And Approach On Hybridpolymer Composite Materials With FGM

Research work was to investigate experimentally the tensile behavior of Functionally Graded Materials (FGM) made from tubular braided composites and to find out the relationship between the tensile property of the FGM and that of the corresponding non-FGM. Composites were made using tubular braided carbon fiber fabrics and an epoxy resin. The FGM specimens had varying braiding angles and the non FGM specimens had constant braiding angles. The effect of braiding angle on the composite properties was established from the test results for the non-FGM specimens. It was shown that both the tensile strength and modulus decreased as the braiding angle increased. The tensile behavior of the FGM specimens was demonstrated to be related to that of the non-FGM specimens. Moreover, a distribution of the volume fraction of these fibers across the width of the corresponding layers is non-uniform (piece-wise distribution. The goal is to maximize the buckling load subject to the constraint on the total cross-sectional area of the stiffer fibers. Composite materials have been steadily substituting metals and alloys due to their better thermo mechanical properties. The successful application of composite materials for high temperature zones in aerospace applications has resulted in extensive exploration of cost effective ablative materials. High temperature heat shielding to body, be it external or internal, has become essential in the space vehicles. The heat shielding primarily protects the substrate material from external kinetic heating and the internal insulation protects the subsystems and helps to keep coefficient of thermal expansion low.