sivaprakasam rajakarunakaran
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Metal matrix composites are widely used in engineering applications because of their better mechanical properties. This review focuses on fabrication methods and fracture behaviors of aluminum metal matrix composites (AMMCs). This paper also discusses its applications. Based on the review study, it is observed that the properties of AMMC vary depending on the reinforcement used, fabrication techniques, and reinforcement disbursement in the matrix material. It is also found that the place where the composite materials are used and the difficulties behind the manufacturing processes decide the selection of reinforcements and the types of fabrication method. It is noticed that the reinforcement of AMMCs is in the form of continuous fibers, short fibers, whiskers, and particulates. The objective of this review study is to summarize the details about the techniques used for fabricating aluminum metal matrix composites, the effects of processing parameters on the mechanical behaviors of composites, the different types of test specimens, and the fixtures used to apply load for fractures experimentations of AMMC with the applications of AMMCs in various fields.Keywords: Aluminium metal matrix composites (AMMC), Fabrication methods, Specimens, fixtures used for fracture tests
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Modeling and development of a decision support system for supplier selection in the process industry
This paper presents the development of a model based decision support system with a case study on solving the supplier selection problem in a chemical processing industry. For the evaluation and selection of supplier, the analytical hierarchy process (AHP) and grey relational analysis (GRA) were used. The intention of the study is to propose an appropriate platform for process industries in selecting suppliers, which was tested with an electroplating industry during the course of development. The sensitivity analysis was performed in order to improve the robustness of the results with regard to the relative importance of the evaluation criteria and the parameters of the evaluation process. Finally, a practical implementation study was carried out to reveal the procedure of the proposed system and identify the suitable supplier with detailed discussions about the benefits and limitations.
Keywords: Supplier evaluation, Supplier selection, Model base, Decision support system, analytical hierarchy process, Grey Relational Analysis
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