Fibre Reinforced Composite(FRC) Structures 1943 layered structure is then cured In general the hand lay-up fabrication process is divided into four essential steps: mould preparation, gel coating, lay-up and curing Recently, partial automation of the hand lay-up is achieved by spray-up process. In which the application method of the resin matrix is slightly different from hand lay up. The hand lay-up fabrication process is mainly used in the application of marine and aerospace structures [7] A few examples of this processes uses are: boats, portable toilets, picnic tables, car bodies. diesel truck cabs hard shell truck bed covers and air craft skins and interiors. The hand lay-up process is labour intensive plus the plastic resins produce toxic fumes requiring well ventilated facilities and protective equipment for workers Filament windir In a filament winding process, a band of continuous resin impregnated roving or monofilaments is wrapped around a rotating mandrel and then cured either at room temperature or in an oven to produce the final product as shown in Fig 4. The mandrel the applications of filament winding are cylindrical and spherical pressure vessel can be cylindrical, round or any shape that does not have re-entrant curvature. Amor pipe lines, oxygen other gas cylinders, rocket motor casings, helicopter blades large underground storage tanks(for gasoline, oil, salts, acids, water etc. ) The process is not limited to axiS-symmetric structures: prismatic shapes and more complex parts such as tee-joints, elbows may be wound on machines equipped with the appropriate number of degrees of freedom. Modern winding machines are numerically controlled with higher degrees of freedom for laying exact number of layers of reinforcement Mechanical strength of the filament wound parts not only depends on composition of component material but also on process parameters like winding angle, fibre tension, esin chemistry and curing cycle. Typical Properties of Filament Wound Pipes(Glass Fibre reinforced) are listed in Table 2 TRAVERSE CARRIAGE PAY OUT EYE FIBRE SPOOLS Figure 4: Schematic Representation of the Wet Filament Winding ProcessFibre Reinforced Composite (FRC) Structures 1943 layered structure is then cured. In general the hand lay-up fabrication process is divided into four essential steps: mould preparation, gel coating, lay-up and curing. Recently, partial automation of the hand lay-up is achieved by spray-up process. In which the application method of the resin matrix is slightly different from hand lay￾up. The hand lay-up fabrication process is mainly used in the application of marine and aerospace structures [7]. A few examples of this processes uses are: boats, portable toilets, picnic tables, car bodies, diesel truck cabs, hard shell truck bed covers and air craft skins and interiors. The hand lay-up process is labour intensive plus the plastic resins produce toxic fumes requiring well ventilated facilities and protective equipment for workers. Filament Winding In a filament winding process, a band of continuous resin impregnated roving or monofilaments is wrapped around a rotating mandrel and then cured either at room temperature or in an oven to produce the final product as shown in Fig 4. The mandrel can be cylindrical, round or any shape that does not have re-entrant curvature. Among the applications of filament winding are cylindrical and spherical pressure vessels, pipe lines, oxygen & other gas cylinders, rocket motor casings, helicopter blades, large underground storage tanks (for gasoline, oil, salts, acids, water etc.). The process is not limited to axis-symmetric structures: prismatic shapes and more complex parts such as tee-joints, elbows may be wound on machines equipped with the appropriate number of degrees of freedom. Modern winding machines are numerically controlled with higher degrees of freedom for laying exact number of layers of reinforcement. Mechanical strength of the filament wound parts not only depends on composition of component material but also on process parameters like winding angle, fibre tension, resin chemistry and curing cycle. Typical Properties of Filament Wound Pipes (Glass Fibre Reinforced) are listed in Table 2. Figure 4: Schematic Representation of the Wet Filament Winding Process