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International audience

In this paper, an AHP model was used for determining the optimal method and the most efficient methodologies of lean manufacturing and six sigma in various industries based on three criteria. These criteria are financial performance, operational performance, and innovation performance. Study results show the impact of three categories that are based on the implementation of a specific method. Findings show that companies implementing lean and six sigma were more effective than companies that implemented either lean manufacturing only or used limited tools of lean six sigma across operational and financial performance. Meanwhile companies that used limited tools of lean six sigma gained minimal performance improvements. Additionally, the results illustrated that automobile industries followed by service and electronics industries have the most effectiveness in innovation, operational and financial performance. Moreover, this study shows struggle of lean manufacturing and/or six sigma implementation with transportation and health industries. Bibliographic investigation showed there is limited scientific research focusing on lean manufacturing and six sigma implementation within French industries.

International audience

In this paper, we study the performance outcomes for industries practicing lean manufacturing and six sigma. Findings indicate that company size has no influence on operational performance outcomes. Also we found that lean manufacturing and six sigma practices such as DMAIC, Kaizen team, Visual Control, SMED, 5S, etc. support to increases companies performance. Investigation results indicate that an increase in the number of years in terms of implementing lean manufacturing and/or six sigma, corresponds with an increase in financial and operational performance. The results also of this study specifically revealed that use six sigma in all departments supportive of improving quality; whereas companies that implemented lean manufacturing in all departments created a safe environment and improved employee involvement within the organization. Moreover, findings illustrate that the use of a belt system supported the improvement in quality, reduced costs and reduced variation. The implementation of lean manufacturing and six sigma are important areas of study as there are few studies reported in the literature on implementing lean manufacturing and six sigma within French industries.