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The IUP Journal of Operations Management :
Optimization of Total Changeover Time in a Medium-Scale Industry
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The present paper discusses the optimization of scheduling by reducing changeover time in a plywood industry. The Genetic Algorithm (GA) tool is used to solve the m machine and n jobs problem. The GA is developed in C++ language to reduce the changeover time. The production data collected from the industry is used for the analysis. The results obtained for existing sequence of production and changeover time as well as modified sequence obtained through GA are compared and discussed with plant management who found the analysis to be very useful.

 
 

Scheduling is generally considered to be the one of the most significant issues in the planning and operation of a manufacturing system. Better scheduling system has significant impact on cost reduction, increased productivity, customer satisfaction and overall competitive advantage. There are different systems of production scheduling including flow shop in which jobs are to be processed through a series of machines for optimizing a number of required performance measures. Scheduling seems to be an intangible process which needs a thorough study to view it as a tangible process. Scheduling problems in an industry contain a set of tasks to be carried out with a set of limited resources available to perform these tasks. The general problem is to determine the timing of the tasks while recognizing the capability of the resources with given tasks and resources, together with some information about uncertainties. The present industrial environment is characterized by markets facing competition from which customer requirements and expectations are becoming increasingly high in terms of quality, cost and delivery time. To achieve these goals, an organization needs implementation of a number of functions together with scheduling which plays a very important role. The present paper discusses the optimization problem of scheduling by using Genetic Algorithm (GA). Literature shows that very less work has been carried out in this field by taking actual industrial data, which leads to unacceptable results for an industry. Therefore, the present paper makes an attempt to bridge this gap by carrying out an analysis using realistic data from a middle-scale ply board industry.

 
 

Operations Management Journal, Optimization, The Genetic Algorithm (GA), Total Changeover Time, Medium-Scale Industry,