Advantages And Disadvantages Of Composite Materials

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INTRODUCTION: Many of the modern technologies require materials with unusual combinations of properties that cannot be met by the conventional metal alloys, ceramics and polymeric materials. This is especially true for materials that are needed for aerospace, under water and transportation applications. For example, aircraft engineers are increasingly searching for structural materials that have low densities, are strong, stiff, impact resistant, and are not easily corroded. This is rather formidable combination of characteristics.frequently,strong materials are relatively dense;also,increasing the strength are stiffness generally results in decrease in impact strength. A composite is a combination of two…show more content…
Composites are widely being used in aerospace, marine, automobile, robotics industries, sports etc. A designer must know the properties of the system in order to design it against failure. The present study aims at the investigation of tensile and flexural properties of glass/epoxy uni directional laminated polymer composies for different angle ply orientations(0/90,45/45,90/0) .A comprehensive study of parameters was carried out. 1. Composite materials A composite is a combination of two materials in which one of the materials, called the reinforcing phase, is in the form of fibers, sheets or particles, and is embedded in the other materials called matrix phase. the reinforcing materials and the matrix material can be metal ,ceramic or polymer, composite .  Making…show more content…
The type of GlassFiber mat selected to make specimen. The matrix material used was a medium viscosity epoxy resin (LAPOX L-12) and a room temperature curing polyamine hardener (K-6). This matrix was chosen since it provided good resistance to alkalis and has good adhesive properties. Based on volume fraction the calculations were made for 60-40 (60% Glass Fiber – 40% Epoxy Resin). Vacuum bag moulding Vacuum bag moulding uses a flexible film to enclose the part and seal it from outside air. A vacuum is then drawn on the vacuum bag and atmospheric pressure compresses the part during the cure. Vacuum bag material is available in a tube shape or a sheet of material. When a tube shaped bag is used, the entire part can be enclosed within the bag. When using sheet bagging materials, the edges of the vacuum bag are sealed against the edges of the mould surface to enclose the part against an air-tight mould.. 2.Preparation of laminate specimens as per ASTM standards with and without

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