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Six Sigma (6σ) is a set of techniques and tools for process improvement.It was introduced by American engineer Bill Smith while working at Motorola in 1986. [1] [2]Six Sigma strategies seek to improve manufacturing quality by identifying and removing the causes of defects and minimizing variability in manufacturing and business processes.
Historically, although the first successful Design for Six Sigma projects in 1989 and 1991 predate establishment of the DMAIC process improvement process, Design for Six Sigma (DFSS) is accepted in part because Six Sigma organisations found that they could not optimise products past three or four Sigma without fundamentally redesigning the ...
The DMAIC improvement cycle is the core tool used to drive Six Sigma projects. However, DMAIC is not exclusive to Six Sigma and can be used as the framework for other improvement applications. However, DMAIC is not exclusive to Six Sigma and can be used as the framework for other improvement applications.
Lean Six Sigma is a synergized managerial concept of Lean and Six Sigma. [6] Lean traditionally focuses on eliminating the eight kinds of waste (" muda ") , and Six Sigma focuses on improving process output quality by identifying and removing the causes of defects (errors) and minimizing variability in (manufacturing and business) processes.
Six Sigma also differs from Lean methods by introducing a special infrastructure of personnel (e.g. so-called "Green Belts" and " Black Belts") in the organization. Six Sigma is more oriented around two particular methods (DMAIC and DMADV), whereas Lean IT employs a portfolio of tools and methods. These differences notwithstanding, Lean IT may ...
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The following companies claim to have successfully implemented Six Sigma in some form or another: 3M [1] Amazon [2] Atos [3] Autoliv [4] BAE Systems [5] Bank of ...
[2] The tool has seen use beyond Toyota, and is now used within Kaizen, lean manufacturing, lean construction and Six Sigma. The five whys were initially developed to understand why new product features or manufacturing techniques were needed, and was not developed for root cause analysis. In other companies, it appears in other forms.