On the optimal selection of process alternatives in a Six Sigma implementation

摘要: Abstract Six Sigma is at the top of agenda for many companies that try to reduce cost and improve productivity. Many manufacturing implement thousands projects every year this implementation demands a significant investment capital requires careful analysis make sure benefits obtained are much higher than actual investment. This benefit crucial, especially whose products have small profit margin. In paper, two optimization models will assist management choose process improvement opportunities presented. These consider multi-stage, asynchronous with opportunity quality (scrap rework rates) each stages. The first model maximizing sigma level under constraint while selection alternatives maximize returns considered by second model. Process usually results in costs associated purchase new technology, modification existing equipment, training employees, hiring employees information technology infrastructure. proposed recognize company competes funds can result either improved revenue or reduction costs. An example illustrates application developed show some scenarios implementing may not be financially beneficial.