Abstract: The advent of computer has brought a revolution in every field in general and the manufacturing sector in particular. Computers have been used in design, development, synthesis, analysis, tooling, manufacturing, inspection, testing etc. to name a few. Plastic parts can be produced by a variety of processes amongst which Injection moulding is the one which is popular because of its inherent advantages of producing different sizes of precision based components at a nominal cost. In this paper, the three dimensional CAD model of an exhaust fan is generated through reverse engineering concept from the point cloud data obtained from a coordinate measuring machine. From the model thus generated, an injection moulding tool is developed. The mould flow analysis is carried out using Plastic Advisor of Pro/ENGINEER 4.0.

• Publication Date: 25-May-2014
• DOI: 10.15224/978-1-63248-028-6-03-77
• Views: 0
• Downloads: 0

Abstract: Sandwich composites with two different thermoset unfilled rigid foam cores (Polyurethane and Polyisocynurate) and different skin to core weight ratios of 1:1 and 2:1 are considered in the present investigation. The foam is considered in sandwich composites because of its light weight structure, easy machining, high stiffness, damping and insulation capabilities. A combined experimental and finite element analysis is used to compare the vibration characteristics of these sandwich composites in a fixed free condition using the impulse hammer technique. Fabrication of the sandwich panels was done with a hand lay-up process and a vacuum bagging film based process. The machined and honed specimen beams were impacted by striking with an impulse hammer at various points. The natural frequencies and mode shapes were obtained at a particular point of impact. Finite element analysis was carried out by means of the ANSYS 14 software for simulating the experimental conditions. Both the experimenta

• Publication Date: 25-May-2014
• DOI: 10.15224/978-1-63248-028-6-03-78
• Views: 0
• Downloads: 0