Abstract: Production of particle reinforced composites is still in the development stage and investigations are in progress to devise techniques to uniformly distribute the reinforcing particles in the matrix so as to get the best properties. The cause of non-uniform distribution is the density difference and non-wetting behavior of the liquid metal and the particles. Random rotation of the mold is used in the present study to distribute redmud particles in an aluminum matrix. Red mud is a waste produced in the production of alumina and unless disposed properly cause environmental problems. A laboratory ball mill used for mineral processing was modified to suit the requirement. The castings were made in the ball mill with the molds rotating randomly. The microstructure of the samples showed uniform distribution of particles in the matrix. Variants in the mold designs tried and microstructures obtained are reported in the paper. It is observed that upto 25% of redmud can be added to aluminium suc

• Publication Date: 05-Jan-2014
• DOI: 10.3850/978-981-07-8859-9_38
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Abstract: Soft In manufacturing industry, complexities will often arise due to the presence of a large number of interacting variables and many of which may defy quantification. Nevertheless, engineers use different skills and strategies for accomplishing and resolving the constraints and achieving the tasks. Operations research (OR) is a widely used technique for management problems through different and appropriate mathematical models. One of the widely used tools of operations research in engineering is the linear programming technique. In this technique all the information pertaining to the problem is expressed in terms of linear constraints on the decision variables. Where the data is precise and the constraints are internally controlled, the technique is good for arriving at the optimized decision. Manufacturing industry is often plagued by uncertainties because of unforeseen factors such as changing weather, break-down of equipment, labor in efficiency, and lack of coordination. Uncertain

• Publication Date: 05-Jan-2014
• DOI: 10.3850/978-981-07-8859-9_39
• Views: 0
• Downloads: 0