CONSIDERATION OF PHASE TRANSITION MECHANISMS DURING PRODUCTION IN MANUFACTURING PROCESSES

In this study, by introducing the Ginzburg-Landau free energy, we define a parameter corresponding to an order parameter as a factor of the phase transition in manufacturing processes. Because thermal diffusion equations can be applied as mathematical models in the manufacturing process, we consider the applicability of the "Edge of Chaos", which is used in complex systems, to the manufacturing industry and the extent to which it would do so. We believe that in the manufacturing industry, the "Edge of Chaos" is a phenomenon that is caused by the loss of synchronization between the production and production throughput. The phase transition phenomenon is observed as the process throughput while manufacturing certain control equipment. We also verify the phase transition in the system through experiments on the flow production system. To maintain synchronization between the manufacturing and process throughput, it is necessary to know the critical point of the phase transition. From an economic perspective, it is important to focus on ways to prevent the critical point from being exceeded. In this study, we adopt the average value of the normalized rate-of-return deviations as the critical point. By not exceeding the average value of the rate-of-return, it is possible to maintain uninterrupted production