Six Sigma: a literature review and analysis of best practices
Tutor / director / evaluatorNassimbeni, Guido
Document typeMaster thesis (pre-Bologna period)
Rights accessRestricted access - confidentiality agreement
The main objective of this dissertation is studying the role of Six Sigma programs in the companies that want to reach the continuous improvement and defining the state of the art of the academic research about Six Sigma, outlining the most important research fields. Continuous improvement (or total quality) is a topic used by many industries for improving product quality performance. In the last two decades a new quality philosophy known as “Six Sigma” has become well established in many companies since its foundation in Motorola in 1987. Many other companies have benefited from their profits as General Electric and Allied Signal overall. After the concept of quality and all it covers is explained, the dissertation will continue with a brief introduction of the concept of quality management, and a detailed history of the evolution of quality management. Afterwards, the most important quality systems will be showed, from its inventors to this methodology in the production processes. The second part will focus only on the Six Sigma methodology: its definition, its origins and the evolution the methodology’s aspects which have made it very competitive worldwide. Finally, an accurate analysis and presentation of the different Six Sigma methods with real examples of implementation will be included. In the third section, as result of an exhaustive research, a literature review of what has been written about the Six Sigma methodology in the last decades will be analyzed in detail with the support of charts, giving a general overview of the evolution of the literature. Finally, the literature has been divided into three wide categories with the aim of understanding the different approaches that the authors have developed, and having a clearer vision of all various topics of the articles.