Concurrent engineering planning on the basis of forward and backward effects of manufacturing processes

An analytical tool has been proposed by the author for developing concurrent engineering within a manufacturing system, on the basis of quantitative analysis of the interconnections existing between the manufacturing processes. This tool takes account of forward and backward effects of the processes and can be employed to set up efficient multidisciplinary teams as the cornerstones of concurrent engineering. In fact, careful analysis of the interconnections existing between various processes is vitally important to set up efficient multidisciplinary teams. A systematic and quantitative approach is much in demand for this purpose, a traceable record of which can barely be found in the literature. The proposed tool also provides a means to evaluate the degree of influence each process exerts over the level of concurrency within the manufacturing system. The forward and backward effects address the effects each process can exercise on its succeeding processes or preceding ones, respectively. Both effects should be taken into consideration to take complete advantages of concurrent engineering. The functional performance of this method has been illustrated through several examples. It was employed in a machine tool manufacturing company, which led to more than a 50% reduction in lead time while the rework was also negligible.