A note on setup-time reduction and capacity management: a marginal-cost approach

Article Abstract:

A proposed alternative formulation for evaluating setup reduction and capacity increases has been found to contain several flaws. First, the model for optimal capacity used is based on an incorrect calculation of total relevant cost. Second, the decision rule proposed for the third step of the formulation fails to clearly determine whether a capacity increase or setup time reduction per order cycle is necessary. Third, the attention given to total setup time does not show the nature of the problem under study since setup time can be reduced.

Industrial capacity

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Load-distance analysis with variable loads

Article Abstract:

The standard load-distance analysis for comparing layouts is extended to allow the calculation of variable loads between work centers. The typical load-distance analysis assumes that the number of trips between work centers is constant. But in applying the analysis,the loads between work centers actually vary over time. A statistical method for comparing two layouts which considers this variability of loads is presented.

Methods, Plant layout

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Manufacturing planning and control: is there one definitive answer?

Article Abstract:

There is not one planning and control system for manufacturing which is used more often or more successfully than others. A survey of 185 manufacturing plants in Ohio found great variety in systems used, proportion of use and environments. Different systems used include manufacturing resource planning, reorder point systems, just in time or kanban and optimized production technology.

Production planning

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