A fuzzy-MADM based approach for prioritising Six Sigma projects in the Indian auto sector

Abstract

Six Sigma is an engineering management strategy that is applied in organisations to drive and endlessly uphold transformational growth in the organisation. This approach targets re-aligning the processes that affect the difference in outcome between the likely results and the actual. Project selection decision making in Six Sigma is always a very critical activity because inadequately selected projects often result in a company expending resources and time that lead to a small or no improvement in the system that the project had been focused on. Six Sigma project selection is a typical multi attribute decision-making problem. The present study needs to select the best project among six alternative Six Sigma projects. The VlseKriterijumska Optimisacija I Kompromisno Resenje (VIKOR) method has been used to select the best Six Sigma project composed with fuzzy logic. In this context, seven critical parameters (selection criteria) have been considered for selection of the best alternative. The weightings of selection criteria are calculated using the modified digital logic method and final ranking is calculated through priority index obtained by using fuzzy VIKOR methodology. The Shox machine shop has been found to be the most appropriate Six Sigma project from the improvement viewpoint at the selected site.

Key Words:

• Six Sigma
• decision-making project selection
• fuzzy MADM
• automotive industry
• modified digital logic
• VIKOR

Jel Classification:

• C90
• C91
• C92
• C93
• C99